Content¶
The abundance file is a reformatted version of the file from the Nuclear Wallet cards (2005), as retrieved from Brookhaven National Laboratory. The abundances are given for all stable isotopes.
Directory: masses/ File: abundance.readme (December 10, 2007) *******************************************
abundance.datNatural abundances of stable isotopes
The abundance file is a reformatted version of the file from the Nuclear Wallet cards (2005), as retrieved from Brookhaven National Laboratory. The abundances are given for all stable isotopes.
Each record of the file contains:
Z : charge number A : mass number El : element symbol abundance: abundance in % uncert : uncertainties in abundance in %
The corresponding FORTRAN format is (2i4,1x,a2,1x,2f10.6)
This module contains a set of functions that are hopefully useful when using python.
fudge.core.utilities.brb.
Pause
(Prompt='Enter <RET> to continue : ', ExtraStr='')[source]¶Prompts and waits for user to enter a line. The line is returned. ExtraStr is added to the prompt string.
A flower-box ascii banner generator. The input string can have line feeds. Each line will get centered in the box.
fudge.core.utilities.brb.
doc
(a)[source]¶This function simply executes “print a.__doc__” where “a” is the argument.
fudge.core.utilities.brb.
docmethods
(o, Full=1)[source]¶This function attempts to print all methods and their documentation contained in the first argument.
fudge.core.utilities.brb.
objectoutline
(o, MaxLevel=1, Full=1)[source]¶This routine attempts to print the objects - methods, members and possible other things - that are a part of the first argument. It will recursively traverse each object found down to level MaxLevel.
fudge.core.utilities.brb.
objectoutline2
(o, MaxLevel, level, name, Full)[source]¶For internal use only.
fudge.core.utilities.brb.
objectvalues
(o)[source]¶Prints a list of all objects return by dir( o ) and their data (or object type) where “o” is the first argument.
fudge.core.utilities.brb.
py
(depth=1, start=0)[source]¶This routine prints all python scripts in sys.path[start:start+depth] in a nice format.
fudge.core.utilities.brb.
tdir
(a=None, w=5, pattern=None, wpattern=None)[source]¶This function is an attempt at improving the output of python’s dir function. It uses tlist to print the output in a more readable format. The argument w is passed to tlist. The argument pattern, if not None, is used to restrict the items displayed to those that match it. Pattern can be any pattern understood by the re module (e.g., to display all items containing the two consecutive letters “2d” set pattern to “.*2d.*”). If pattern is None and wpattern is NOT None then pattern is set to “.*” + wpattern + “.*”.
fudge.core.utilities.brb.
tlist
(l, w=5, sep=None, rightJustify=0)[source]¶Calls tylist with arguments passed.
fudge.core.utilities.brb.
txlist
(l, w=5, sep=None, rightJustify=0)[source]¶Prints the list given by the first argument in a tabled format. The purpose of this function is to print a python list in a more readable format. The number of items from list printed per line is set by w. The argument sep, if not None, is printed as a separator between each item on a line. The items are left justified unless the argument rightJustify is true. This function prints each w consecutive items horizontally. Also see tylist.
fudge.core.utilities.brb.
tylist
(l, w=5, sep=None, rightJustify=0)[source]¶Prints the list given by the first argument in a tabled format. The purpose of this function is to print a python list in a more readable format. The number of items from list printed per line is set by w. The argument sep, if not None, is printed as a separator between each item on a line. The items are left justified unless the argument rightJustify is true. This function prints each consecutive item vertically while maintaining w columns. Also see txlist.
fudge.core.utilities.brb.
uniquify
(seq)[source]¶Fast implimentation of a function to strip out non-unique entries in a Python list, but preserving list order. Usage:
>>> print uniquify( [1,4,2,4,7,2,1,1,1,'s','a',0.1] )
[1, 4, 2, 7, 's', 'a', 0.10000000000000001]
This module contains the fudge exception classes.
fudge.core.utilities.fudgeExceptions.
ENDL_CheckerException
(value)[source]¶Bases: fudge.core.utilities.fudgeExceptions.FUDGE_Exception
This class is raised whenever a check method detects bad ENDL data.
fudge.core.utilities.fudgeExceptions.
ENDL_DesignerIsotopeReadException
[source]¶Bases: exceptions.Exception
This class is raised whenever read is called on a designer isotope.
fudge.core.utilities.fudgeExceptions.
ENDL_addFileException_FileExist
(value)[source]¶Bases: fudge.core.utilities.fudgeExceptions.FUDGE_Exception
This class is raised whenever endlZA.addFile is called and the file already exists.
fudge.core.utilities.fudgeExceptions.
ENDL_fixHeadersException_NoC10Data
(value)[source]¶Bases: fudge.core.utilities.fudgeExceptions.FUDGE_Exception
This class is raised whenever endlZA.fixHeaders needs missing header data and cannot find the C = 10, I = 0 which it assumes as valid header data.
This module contains the class fudgeTempFile which simplies the functions in the tempfile module.
fudge.core.utilities.fudgeFileMisc.
fudgeTempFile
(prefix=None, suffix='', dir=None, deleteOnClose=False)[source]¶Bases: object
This class creates a temporary file using tempfile.mkstemp and supports common functionallity for the file (e.g., write). Currently, reading from the temporary file is not supported.
close
(raiseIfClosed=True)[source]¶Closes the file if still opened. If raiseIfClosed is ‘True’ and file is already closed, a raise is executed.
Convert between Z, symbol and element name. adapted from endl_Z cmattoon, March 2011
fudge.core.utilities.fudgeZA.
LabelToZ
(label)[source]¶Returns the Z for the specified label or ‘None’ if no match for label.
fudge.core.utilities.fudgeZA.
SymbolToZ
(symbol)[source]¶Returns the Z for the specified symbol or ‘None’ if no match for symbol.
fudge.core.utilities.fudgeZA.
ZAToGNDSName
(ZA)[source]¶Converts an ENDL ZA or ‘zaZZZAAA_suffix’ into a GNDS name. For example ENDL 94239 or ‘za094239’, is converted to ‘Pu239’.
fudge.core.utilities.fudgeZA.
ZToLabel
(Z)[source]¶Returns the label (i.e., name) for the specified Z or ‘None’ if Z is out-of-bounds.
pyparsing module - Classes and methods to define and execute parsing grammars
The pyparsing module is an alternative approach to creating and executing simple grammars, vs. the traditional lex/yacc approach, or the use of regular expressions. With pyparsing, you don’t need to learn a new syntax for defining grammars or matching expressions - the parsing module provides a library of classes that you use to construct the grammar directly in Python.
Here is a program to parse “Hello, World!” (or any greeting of the form C{“<salutation>, <addressee>!”}):
from pyparsing import Word, alphas
# define grammar of a greeting
greet = Word( alphas ) + "," + Word( alphas ) + "!"
hello = "Hello, World!"
print hello, "->", greet.parseString( hello )
The program outputs the following:
Hello, World! -> ['Hello', ',', 'World', '!']
The Python representation of the grammar is quite readable, owing to the self-explanatory class names, and the use of ‘+’, ‘|’ and ‘^’ operators.
The parsed results returned from C{parseString()} can be accessed as a nested list, a dictionary, or an object with named attributes.
fudge.core.utilities.pyparsing.
And
(exprs, savelist=True)[source]¶Bases: fudge.core.utilities.pyparsing.ParseExpression
Requires all given C{ParseExpressions} to be found in the given order. Expressions may be separated by whitespace. May be constructed using the ‘+’ operator.
fudge.core.utilities.pyparsing.
CaselessKeyword
(matchString, identChars='abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_$')[source]¶fudge.core.utilities.pyparsing.
CaselessLiteral
(matchString)[source]¶Bases: fudge.core.utilities.pyparsing.Literal
Token to match a specified string, ignoring case of letters. Note: the matched results will always be in the case of the given match string, NOT the case of the input text.
fudge.core.utilities.pyparsing.
CharsNotIn
(notChars, min=1, max=0, exact=0)[source]¶Bases: fudge.core.utilities.pyparsing.Token
Token for matching words composed of characters not in a given set. Defined with string containing all disallowed characters, and an optional minimum, maximum, and/or exact length. The default value for C{min} is 1 (a minimum value < 1 is not valid); the default values for C{max} and C{exact} are 0, meaning no maximum or exact length restriction.
fudge.core.utilities.pyparsing.
Combine
(expr, joinString='', adjacent=True)[source]¶Bases: fudge.core.utilities.pyparsing.TokenConverter
Converter to concatenate all matching tokens to a single string. By default, the matching patterns must also be contiguous in the input string; this can be disabled by specifying C{‘adjacent=False’} in the constructor.
fudge.core.utilities.pyparsing.
Dict
(exprs)[source]¶Bases: fudge.core.utilities.pyparsing.TokenConverter
Converter to return a repetitive expression as a list, but also as a dictionary. Each element can also be referenced using the first token in the expression as its key. Useful for tabular report scraping when the first column can be used as a item key.
fudge.core.utilities.pyparsing.
Each
(exprs, savelist=True)[source]¶Bases: fudge.core.utilities.pyparsing.ParseExpression
Requires all given C{ParseExpressions} to be found, but in any order. Expressions may be separated by whitespace. May be constructed using the ‘&’ operator.
fudge.core.utilities.pyparsing.
Empty
[source]¶Bases: fudge.core.utilities.pyparsing.Token
An empty token, will always match.
fudge.core.utilities.pyparsing.
FollowedBy
(expr)[source]¶Bases: fudge.core.utilities.pyparsing.ParseElementEnhance
Lookahead matching of the given parse expression. C{FollowedBy} does not advance the parsing position within the input string, it only verifies that the specified parse expression matches at the current position. C{FollowedBy} always returns a null token list.
fudge.core.utilities.pyparsing.
Forward
(other=None)[source]¶Bases: fudge.core.utilities.pyparsing.ParseElementEnhance
Forward declaration of an expression to be defined later - used for recursive grammars, such as algebraic infix notation. When the expression is known, it is assigned to the C{Forward} variable using the ‘<<’ operator.
Note: take care when assigning to C{Forward} not to overlook precedence of operators. Specifically, ‘|’ has a lower precedence than ‘<<’, so that:
fwdExpr << a | b | c
thereby leaving b and c out as parseable alternatives. It is recommended that you explicitly group the values inserted into the C{Forward}:
fwdExpr << (a | b | c)
fudge.core.utilities.pyparsing.
GoToColumn
(colno)[source]¶Bases: fudge.core.utilities.pyparsing._PositionToken
Token to advance to a specific column of input text; useful for tabular report scraping.
fudge.core.utilities.pyparsing.
Group
(expr)[source]¶Bases: fudge.core.utilities.pyparsing.TokenConverter
Converter to return the matched tokens as a list - useful for returning tokens of ZeroOrMore and OneOrMore expressions.
fudge.core.utilities.pyparsing.
Keyword
(matchString, identChars='abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_$', caseless=False)[source]¶Bases: fudge.core.utilities.pyparsing.Token
Token to exactly match a specified string as a keyword, that is, it must be immediately followed by a non-keyword character. Compare with C{Literal}:
Literal("if") will match the leading 'if' in 'ifAndOnlyIf'.
Keyword("if") will not; it will only match the leading 'if in 'if x=1', or 'if(y==2)'
Accepts two optional constructor arguments in addition to the keyword string: C{identChars} is a string of characters that would be valid identifier characters, defaulting to all alphanumerics + “_” and “$”; C{caseless} allows case-insensitive matching, default is False.
DEFAULT_KEYWORD_CHARS
= 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_$'¶fudge.core.utilities.pyparsing.
LineEnd
[source]¶Bases: fudge.core.utilities.pyparsing._PositionToken
Matches if current position is at the end of a line within the parse string
fudge.core.utilities.pyparsing.
LineStart
[source]¶Bases: fudge.core.utilities.pyparsing._PositionToken
Matches if current position is at the beginning of a line within the parse string
fudge.core.utilities.pyparsing.
Literal
(matchString)[source]¶Bases: fudge.core.utilities.pyparsing.Token
Token to exactly match a specified string.
fudge.core.utilities.pyparsing.
MatchFirst
(exprs, savelist=False)[source]¶Bases: fudge.core.utilities.pyparsing.ParseExpression
Requires that at least one C{ParseExpression} is found. If two expressions match, the first one listed is the one that will match. May be constructed using the ‘|’ operator.
fudge.core.utilities.pyparsing.
NoMatch
[source]¶Bases: fudge.core.utilities.pyparsing.Token
A token that will never match.
fudge.core.utilities.pyparsing.
NotAny
(expr)[source]¶Bases: fudge.core.utilities.pyparsing.ParseElementEnhance
Lookahead to disallow matching with the given parse expression. C{NotAny} does not advance the parsing position within the input string, it only verifies that the specified parse expression does not match at the current position. Also, C{NotAny} does not skip over leading whitespace. C{NotAny} always returns a null token list. May be constructed using the ‘~’ operator.
fudge.core.utilities.pyparsing.
OneOrMore
(expr, savelist=False)[source]¶Bases: fudge.core.utilities.pyparsing.ParseElementEnhance
Repetition of one or more of the given expression.
fudge.core.utilities.pyparsing.
OnlyOnce
(methodCall)[source]¶Bases: object
Wrapper for parse actions, to ensure they are only called once.
fudge.core.utilities.pyparsing.
Optional
(exprs, default=<fudge.core.utilities.pyparsing._NullToken object>)[source]¶Bases: fudge.core.utilities.pyparsing.ParseElementEnhance
Optional matching of the given expression. A default return string can also be specified, if the optional expression is not found.
fudge.core.utilities.pyparsing.
Or
(exprs, savelist=False)[source]¶Bases: fudge.core.utilities.pyparsing.ParseExpression
Requires that at least one C{ParseExpression} is found. If two expressions match, the expression that matches the longest string will be used. May be constructed using the ‘^’ operator.
fudge.core.utilities.pyparsing.
ParseBaseException
(pstr, loc=0, msg=None, elem=None)[source]¶Bases: exceptions.Exception
Base exception class for all parsing runtime exceptions
fudge.core.utilities.pyparsing.
ParseElementEnhance
(expr, savelist=False)[source]¶Bases: fudge.core.utilities.pyparsing.ParserElement
Abstract subclass of C{ParserElement}, for combining and post-processing parsed tokens.
fudge.core.utilities.pyparsing.
ParseException
(pstr, loc=0, msg=None, elem=None)[source]¶Bases: fudge.core.utilities.pyparsing.ParseBaseException
Exception thrown when parse expressions don’t match class; supported attributes by name are:
- lineno - returns the line number of the exception text
- col - returns the column number of the exception text
- line - returns the line containing the exception text
fudge.core.utilities.pyparsing.
ParseExpression
(exprs, savelist=False)[source]¶Bases: fudge.core.utilities.pyparsing.ParserElement
Abstract subclass of ParserElement, for combining and post-processing parsed tokens.
fudge.core.utilities.pyparsing.
ParseFatalException
(pstr, loc=0, msg=None, elem=None)[source]¶Bases: fudge.core.utilities.pyparsing.ParseBaseException
User-throwable exception thrown when inconsistent parse content is found; stops all parsing immediately
fudge.core.utilities.pyparsing.
ParseResults
(toklist, name=None, asList=True, modal=True, isinstance=<built-in function isinstance>)[source]¶Bases: object
Structured parse results, to provide multiple means of access to the parsed data: - as a list (C{len(results)}) - by list index (C{results[0], results[1]}, etc.) - by attribute (C{results.<resultsName>})
asList
()[source]¶Returns the parse results as a nested list of matching tokens, all converted to strings.
asXML
(doctag=None, namedItemsOnly=False, indent='', formatted=True)[source]¶Returns the parse results as XML. Tags are created for tokens and lists that have defined results names.
dump
(indent='', depth=0)[source]¶Diagnostic method for listing out the contents of a C{ParseResults}. Accepts an optional C{indent} argument so that this string can be embedded in a nested display of other data.
get
(key, defaultValue=None)[source]¶Returns named result matching the given key, or if there is no such name, then returns the given C{defaultValue} or C{None} if no C{defaultValue} is specified.
fudge.core.utilities.pyparsing.
ParseSyntaxException
(pe)[source]¶Bases: fudge.core.utilities.pyparsing.ParseFatalException
Just like C{ParseFatalException}, but thrown internally when an C{ErrorStop} (‘-‘ operator) indicates that parsing is to stop immediately because an unbacktrackable syntax error has been found
fudge.core.utilities.pyparsing.
ParserElement
(savelist=False)[source]¶Bases: object
Abstract base level parser element class.
DEFAULT_WHITE_CHARS
= ' \n\t\r'¶addParseAction
(*fns, **kwargs)[source]¶Add parse action to expression’s list of parse actions. See L{I{setParseAction}<setParseAction>}.
copy
()[source]¶Make a copy of this C{ParserElement}. Useful for defining different parse actions for the same parsing pattern, using copies of the original parse element.
enablePackrat
()[source]¶Enables “packrat” parsing, which adds memoizing to the parsing logic. Repeated parse attempts at the same string location (which happens often in many complex grammars) can immediately return a cached value, instead of re-executing parsing/validating code. Memoizing is done of both valid results and parsing exceptions.
This speedup may break existing programs that use parse actions that have side-effects. For this reason, packrat parsing is disabled when you first import pyparsing. To activate the packrat feature, your program must call the class method C{ParserElement.enablePackrat()}. If your program uses C{psyco} to “compile as you go”, you must call C{enablePackrat} before calling C{psyco.full()}. If you do not do this, Python will crash. For best results, call C{enablePackrat()} immediately after importing pyparsing.
ignore
(other)[source]¶Define expression to be ignored (e.g., comments) while doing pattern matching; may be called repeatedly, to define multiple comment or other ignorable patterns.
leaveWhitespace
()[source]¶Disables the skipping of whitespace before matching the characters in the C{ParserElement}’s defined pattern. This is normally only used internally by the pyparsing module, but may be needed in some whitespace-sensitive grammars.
parseFile
(file_or_filename, parseAll=False)[source]¶Execute the parse expression on the given file or filename. If a filename is specified (instead of a file object), the entire file is opened, read, and closed before parsing.
parseString
(instring, parseAll=False)[source]¶Execute the parse expression with the given string. This is the main interface to the client code, once the complete expression has been built.
If you want the grammar to require that the entire input string be successfully parsed, then set C{parseAll} to True (equivalent to ending the grammar with C{StringEnd()}).
Note: C{parseString} implicitly calls C{expandtabs()} on the input string, in order to report proper column numbers in parse actions. If the input string contains tabs and the grammar uses parse actions that use the C{loc} argument to index into the string being parsed, you can ensure you have a consistent view of the input string by:
- calling C{parseWithTabs} on your grammar before calling C{parseString} (see L{I{parseWithTabs}<parseWithTabs>})
- define your parse action using the full C{(s,loc,toks)} signature, and reference the input string using the parse action’s C{s} argument
- explictly expand the tabs in your input string before calling C{parseString}
parseWithTabs
()[source]¶Overrides default behavior to expand <TAB>s to spaces before parsing the input string. Must be called before C{parseString} when the input grammar contains elements that match <TAB> characters.
scanString
(instring, maxMatches=9223372036854775807)[source]¶Scan the input string for expression matches. Each match will return the matching tokens, start location, and end location. May be called with optional C{maxMatches} argument, to clip scanning after ‘n’ matches are found.
Note that the start and end locations are reported relative to the string being parsed. See L{I{parseString}<parseString>} for more information on parsing strings with embedded tabs.
searchString
(instring, maxMatches=9223372036854775807)[source]¶Another extension to C{scanString}, simplifying the access to the tokens found to match the given parse expression. May be called with optional C{maxMatches} argument, to clip searching after ‘n’ matches are found.
setBreak
(breakFlag=True)[source]¶Method to invoke the Python pdb debugger when this element is about to be parsed. Set C{breakFlag} to True to enable, False to disable.
setDebug
(flag=True)[source]¶Enable display of debugging messages while doing pattern matching. Set C{flag} to True to enable, False to disable.
setDebugActions
(startAction, successAction, exceptionAction)[source]¶Enable display of debugging messages while doing pattern matching.
setFailAction
(fn)[source]¶Define action to perform if parsing fails at this expression. Fail acton fn is a callable function that takes the arguments C{fn(s,loc,expr,err)} where:
- s = string being parsed
- loc = location where expression match was attempted and failed
- expr = the parse expression that failed
- err = the exception thrown
The function returns no value. It may throw C{ParseFatalException} if it is desired to stop parsing immediately.
setParseAction
(*fns, **kwargs)[source]¶Define action to perform when successfully matching parse element definition. Parse action fn is a callable method with 0-3 arguments, called as C{fn(s,loc,toks)}, C{fn(loc,toks)}, C{fn(toks)}, or just C{fn()}, where:
- s = the original string being parsed (see note below)
- loc = the location of the matching substring
- toks = a list of the matched tokens, packaged as a ParseResults object
If the functions in fns modify the tokens, they can return them as the return value from fn, and the modified list of tokens will replace the original. Otherwise, fn does not need to return any value.
Note: the default parsing behavior is to expand tabs in the input string before starting the parsing process. See L{I{parseString}<parseString>} for more information on parsing strings containing <TAB>s, and suggested methods to maintain a consistent view of the parsed string, the parse location, and line and column positions within the parsed string.
setResultsName
(name, listAllMatches=False)[source]¶Define name for referencing matching tokens as a nested attribute of the returned parse results. NOTE: this returns a copy of the original C{ParserElement} object; this is so that the client can define a basic element, such as an integer, and reference it in multiple places with different names.
You can also set results names using the abbreviated syntax, C{expr(“name”)} in place of C{expr.setResultsName(“name”)} - see L{I{__call__}<__call__>}.
suppress
()[source]¶Suppresses the output of this C{ParserElement}; useful to keep punctuation from cluttering up returned output.
transformString
(instring)[source]¶Extension to C{scanString}, to modify matching text with modified tokens that may be returned from a parse action. To use C{transformString}, define a grammar and attach a parse action to it that modifies the returned token list. Invoking C{transformString()} on a target string will then scan for matches, and replace the matched text patterns according to the logic in the parse action. C{transformString()} returns the resulting transformed string.
validate
(validateTrace=[])[source]¶Check defined expressions for valid structure, check for infinite recursive definitions.
verbose_stacktrace
= False¶fudge.core.utilities.pyparsing.
QuotedString
(quoteChar, escChar=None, escQuote=None, multiline=False, unquoteResults=True, endQuoteChar=None)[source]¶Bases: fudge.core.utilities.pyparsing.Token
Token for matching strings that are delimited by quoting characters.
fudge.core.utilities.pyparsing.
RecursiveGrammarException
(parseElementList)[source]¶Bases: exceptions.Exception
Exception thrown by C{validate()} if the grammar could be improperly recursive
fudge.core.utilities.pyparsing.
Regex
(pattern, flags=0)[source]¶Bases: fudge.core.utilities.pyparsing.Token
Token for matching strings that match a given regular expression. Defined with string specifying the regular expression in a form recognized by the inbuilt Python re module.
compiledREtype
¶alias of SRE_Pattern
fudge.core.utilities.pyparsing.
SkipTo
(other, include=False, ignore=None, failOn=None)[source]¶Bases: fudge.core.utilities.pyparsing.ParseElementEnhance
Token for skipping over all undefined text until the matched expression is found. If C{include} is set to true, the matched expression is also parsed (the skipped text and matched expression are returned as a 2-element list). The C{ignore} argument is used to define grammars (typically quoted strings and comments) that might contain false matches.
fudge.core.utilities.pyparsing.
StringEnd
[source]¶Bases: fudge.core.utilities.pyparsing._PositionToken
Matches if current position is at the end of the parse string
fudge.core.utilities.pyparsing.
StringStart
[source]¶Bases: fudge.core.utilities.pyparsing._PositionToken
Matches if current position is at the beginning of the parse string
fudge.core.utilities.pyparsing.
Suppress
(expr, savelist=False)[source]¶Bases: fudge.core.utilities.pyparsing.TokenConverter
Converter for ignoring the results of a parsed expression.
fudge.core.utilities.pyparsing.
Token
[source]¶Bases: fudge.core.utilities.pyparsing.ParserElement
Abstract C{ParserElement} subclass, for defining atomic matching patterns.
fudge.core.utilities.pyparsing.
TokenConverter
(expr, savelist=False)[source]¶Bases: fudge.core.utilities.pyparsing.ParseElementEnhance
Abstract subclass of ParseExpression, for converting parsed results.
fudge.core.utilities.pyparsing.
Upcase
(*args)[source]¶Bases: fudge.core.utilities.pyparsing.TokenConverter
Converter to upper case all matching tokens.
fudge.core.utilities.pyparsing.
White
(ws=' trn', min=1, max=0, exact=0)[source]¶Bases: fudge.core.utilities.pyparsing.Token
Special matching class for matching whitespace. Normally, whitespace is ignored by pyparsing grammars. This class is included when some whitespace structures are significant. Define with a string containing the whitespace characters to be matched; default is C{” trn”}. Also takes optional C{min}, C{max}, and C{exact} arguments, as defined for the C{Word} class.
whiteStrs
= {'\t': '<TAB>', ' ': '<SPC>', '\n': '<LF>', '\r': '<CR>', '\x0c': '<FF>'}¶fudge.core.utilities.pyparsing.
Word
(initChars, bodyChars=None, min=1, max=0, exact=0, asKeyword=False)[source]¶Bases: fudge.core.utilities.pyparsing.Token
Token for matching words composed of allowed character sets. Defined with string containing all allowed initial characters, an optional string containing allowed body characters (if omitted, defaults to the initial character set), and an optional minimum, maximum, and/or exact length. The default value for C{min} is 1 (a minimum value < 1 is not valid); the default values for C{max} and C{exact} are 0, meaning no maximum or exact length restriction.
fudge.core.utilities.pyparsing.
WordEnd
(wordChars='0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!"#$%&'()*+, -./:;<=>?@[\]^_`{|}~')[source]¶Bases: fudge.core.utilities.pyparsing._PositionToken
Matches if the current position is at the end of a Word, and is not followed by any character in a given set of wordChars (default=C{printables}). To emulate the C{} behavior of regular expressions, use C{WordEnd(alphanums)}. C{WordEnd} will also match at the end of the string being parsed, or at the end of a line.
fudge.core.utilities.pyparsing.
WordStart
(wordChars='0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!"#$%&'()*+, -./:;<=>?@[\]^_`{|}~')[source]¶Bases: fudge.core.utilities.pyparsing._PositionToken
Matches if the current position is at the beginning of a Word, and is not preceded by any character in a given set of wordChars (default=C{printables}). To emulate the C{} behavior of regular expressions, use C{WordStart(alphanums)}. C{WordStart} will also match at the beginning of the string being parsed, or at the beginning of a line.
fudge.core.utilities.pyparsing.
ZeroOrMore
(expr)[source]¶Bases: fudge.core.utilities.pyparsing.ParseElementEnhance
Optional repetition of zero or more of the given expression.
fudge.core.utilities.pyparsing.
col
(loc, strg)[source]¶Returns current column within a string, counting newlines as line separators. The first column is number 1.
Note: the default parsing behavior is to expand tabs in the input string before starting the parsing process. See L{I{ParserElement.parseString}<ParserElement.parseString>} for more information on parsing strings containing <TAB>s, and suggested methods to maintain a consistent view of the parsed string, the parse location, and line and column positions within the parsed string.
fudge.core.utilities.pyparsing.
countedArray
(expr)[source]¶Helper to define a counted list of expressions. This helper defines a pattern of the form:
integer expr expr expr...
where the leading integer tells how many expr expressions follow. The matched tokens returns the array of expr tokens as a list - the leading count token is suppressed.
fudge.core.utilities.pyparsing.
delimitedList
(expr, delim=', ', combine=False)[source]¶Helper to define a delimited list of expressions - the delimiter defaults to ‘,’. By default, the list elements and delimiters can have intervening whitespace, and comments, but this can be overridden by passing C{combine=True} in the constructor. If C{combine} is set to True, the matching tokens are returned as a single token string, with the delimiters included; otherwise, the matching tokens are returned as a list of tokens, with the delimiters suppressed.
fudge.core.utilities.pyparsing.
dictOf
(key, value)[source]¶Helper to easily and clearly define a dictionary by specifying the respective patterns for the key and value. Takes care of defining the C{Dict}, C{ZeroOrMore}, and C{Group} tokens in the proper order. The key pattern can include delimiting markers or punctuation, as long as they are suppressed, thereby leaving the significant key text. The value pattern can include named results, so that the C{Dict} results can include named token fields.
fudge.core.utilities.pyparsing.
downcaseTokens
(s, l, t)[source]¶Helper parse action to convert tokens to lower case.
fudge.core.utilities.pyparsing.
getTokensEndLoc
()[source]¶Method to be called from within a parse action to determine the end location of the parsed tokens.
fudge.core.utilities.pyparsing.
keepOriginalText
(s, startLoc, t)[source]¶DEPRECATED - use new helper method C{originalTextFor}. Helper parse action to preserve original parsed text, overriding any nested parse actions.
fudge.core.utilities.pyparsing.
line
(loc, strg)[source]¶Returns the line of text containing loc within a string, counting newlines as line separators.
fudge.core.utilities.pyparsing.
lineno
(loc, strg)[source]¶Returns current line number within a string, counting newlines as line separators. The first line is number 1.
Note: the default parsing behavior is to expand tabs in the input string before starting the parsing process. See L{I{ParserElement.parseString}<ParserElement.parseString>} for more information on parsing strings containing <TAB>s, and suggested methods to maintain a consistent view of the parsed string, the parse location, and line and column positions within the parsed string.
fudge.core.utilities.pyparsing.
makeHTMLTags
(tagStr)[source]¶Helper to construct opening and closing tag expressions for HTML, given a tag name
fudge.core.utilities.pyparsing.
makeXMLTags
(tagStr)[source]¶Helper to construct opening and closing tag expressions for XML, given a tag name
fudge.core.utilities.pyparsing.
matchOnlyAtCol
(n)[source]¶Helper method for defining parse actions that require matching at a specific column in the input text.
fudge.core.utilities.pyparsing.
matchPreviousExpr
(expr)[source]¶Helper to define an expression that is indirectly defined from the tokens matched in a previous expression, that is, it looks for a ‘repeat’ of a previous expression. For example:
first = Word(nums)
second = matchPreviousExpr(first)
matchExpr = first + ":" + second
will match C{“1:1”}, but not C{“1:2”}. Because this matches by expressions, will not match the leading C{“1:1”} in C{“1:10”}; the expressions are evaluated first, and then compared, so C{“1”} is compared with C{“10”}. Do not use with packrat parsing enabled.
fudge.core.utilities.pyparsing.
matchPreviousLiteral
(expr)[source]¶Helper to define an expression that is indirectly defined from the tokens matched in a previous expression, that is, it looks for a ‘repeat’ of a previous expression. For example:
first = Word(nums)
second = matchPreviousLiteral(first)
matchExpr = first + ":" + second
will match C{“1:1”}, but not C{“1:2”}. Because this matches a previous literal, will also match the leading C{“1:1”} in C{“1:10”}. If this is not desired, use C{matchPreviousExpr}. Do not use with packrat parsing enabled.
fudge.core.utilities.pyparsing.
nestedExpr
(opener='(', closer=')', content=None, ignoreExpr=quotedString using single or double quotes)[source]¶Helper method for defining nested lists enclosed in opening and closing delimiters (“(” and “)” are the default).
If an expression is not provided for the content argument, the nested expression will capture all whitespace-delimited content between delimiters as a list of separate values.
Use the ignoreExpr argument to define expressions that may contain opening or closing characters that should not be treated as opening or closing characters for nesting, such as quotedString or a comment expression. Specify multiple expressions using an Or or MatchFirst. The default is quotedString, but if no expressions are to be ignored, then pass None for this argument.
fudge.core.utilities.pyparsing.
nullDebugAction
(*args)[source]¶‘Do-nothing’ debug action, to suppress debugging output during parsing.
fudge.core.utilities.pyparsing.
oneOf
(strs, caseless=False, useRegex=True)[source]¶Helper to quickly define a set of alternative Literals, and makes sure to do longest-first testing when there is a conflict, regardless of the input order, but returns a C{MatchFirst} for best performance.
fudge.core.utilities.pyparsing.
operatorPrecedence
(baseExpr, opList)[source]¶Helper method for constructing grammars of expressions made up of operators working in a precedence hierarchy. Operators may be unary or binary, left- or right-associative. Parse actions can also be attached to operator expressions.
baseExpr - expression representing the most basic element for the nested
opList - list of tuples, one for each operator precedence level in the expression grammar; each tuple is of the form (opExpr, numTerms, rightLeftAssoc, parseAction), where:
- opExpr is the pyparsing expression for the operator;
- may also be a string, which will be converted to a Literal; if numTerms is 3, opExpr is a tuple of two expressions, for the two operators separating the 3 terms
- numTerms is the number of terms for this operator (must
- be 1, 2, or 3)
- rightLeftAssoc is the indicator whether the operator is
- right or left associative, using the pyparsing-defined constants opAssoc.RIGHT and opAssoc.LEFT.
- parseAction is the parse action to be associated with
- expressions matching this operator expression (the parse action tuple member may be omitted)
fudge.core.utilities.pyparsing.
removeQuotes
(s, l, t)[source]¶Helper parse action for removing quotation marks from parsed quoted strings. To use, add this parse action to quoted string using:
quotedString.setParseAction( removeQuotes )
fudge.core.utilities.pyparsing.
replaceHTMLEntity
(t)¶fudge.core.utilities.pyparsing.
replaceWith
(replStr)[source]¶Helper method for common parse actions that simply return a literal value. Especially useful when used with C{transformString()}.
fudge.core.utilities.pyparsing.
srange
(s)[source]¶Helper to easily define string ranges for use in Word construction. Borrows syntax from regexp ‘[]’ string range definitions:
srange("[0-9]") -> "0123456789"
srange("[a-z]") -> "abcdefghijklmnopqrstuvwxyz"
srange("[a-z$_]") -> "abcdefghijklmnopqrstuvwxyz$_"
The input string must be enclosed in []’s, and the returned string is the expanded character set joined into a single string. The values enclosed in the []’s may be:
a single character
an escaped character with a leading backslash (such as \- or \])
an escaped hex character with a leading '\0x' (\0x21, which is a '!' character)
an escaped octal character with a leading '\0' (\041, which is a '!' character)
a range of any of the above, separated by a dash ('a-z', etc.)
any combination of the above ('aeiouy', 'a-zA-Z0-9_$', etc.)
fudge.core.utilities.pyparsing.
upcaseTokens
(s, l, t)[source]¶Helper parse action to convert tokens to upper case.
fudge.core.utilities.pyparsing.
withAttribute
(*args, **attrDict)[source]¶Helper to create a validating parse action to be used with start tags created with makeXMLTags or makeHTMLTags. Use withAttribute to qualify a starting tag with a required attribute value, to avoid false matches on common tags such as <TD> or <DIV>.
Call withAttribute with a series of attribute names and values. Specify the list of filter attributes names and values as:
- keyword arguments, as in (class=”Customer”,align=”right”), or
- a list of name-value tuples, as in ( (“ns1:class”, “Customer”), (“ns2:align”,”right”) )
For attribute names with a namespace prefix, you must use the second form. Attribute names are matched insensitive to upper/lower case.
To verify that the attribute exists, but without specifying a value, pass withAttribute.ANY_VALUE as the value.
fudge.core.utilities.pyparsing.
indentedBlock
(blockStatementExpr, indentStack, indent=True)[source]¶Helper method for defining space-delimited indentation blocks, such as those used to define block statements in Python source code.
A valid block must contain at least one blockStatement.
fudge.core.utilities.pyparsing.
originalTextFor
(expr, asString=True)[source]¶Helper to return the original, untokenized text for a given expression. Useful to restore the parsed fields of an HTML start tag into the raw tag text itself, or to revert separate tokens with intervening whitespace back to the original matching input text. Simpler to use than the parse action C{keepOriginalText}, and does not require the inspect module to chase up the call stack. By default, returns a string containing the original parsed text.
If the optional C{asString} argument is passed as False, then the return value is a C{ParseResults} containing any results names that were originally matched, and a single token containing the original matched text from the input string. So if the expression passed to C{originalTextFor} contains expressions with defined results names, you must set C{asString} to False if you want to preserve those results name values.
Containers for a particle and a reaction, plus utility to parse in string representations to containers: >>> parseReaction(“n + Fe56 -> n[multiplicity:‘2’] + (Fe55_s -> gamma)”)
fudge.core.utilities.reactionStrings.
particleParser
()[source]¶Parse string of form “Pu239_e2[option1:’value’, option2:’value’ … ]” into particle class.
fudge.core.utilities.reactionStrings.
particleString
(symbol, A, excitation=0, opts=None, decaysTo=None)[source]¶Bases: object
optionList
= ('multiplicity', 'emissionMode', 'decayRate')¶specialNames
= ('gamma', 'e')¶Wrapper for xml parsers (Etree, DOM, etc), in case we need to support multiple parsers. For now only supporting python’s xml.etree. This is only for reading (not writing) xml; creating new elements should happen within fudge