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e7b146fb3b
The attached patches update the standard library so that all modules have docstrings beginning with one-line summaries. A new docstring was added to formatter. The docstring for os.py was updated to mention nt, os2, ce in addition to posix, dos, mac.
54 lines
1.8 KiB
Python
54 lines
1.8 KiB
Python
"""Constants for selecting regexp syntaxes for the obsolete regex module.
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This module is only for backward compatibility. "regex" has now
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been replaced by the new regular expression module, "re".
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These bits are passed to regex.set_syntax() to choose among
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alternative regexp syntaxes.
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"""
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# 1 means plain parentheses serve as grouping, and backslash
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# parentheses are needed for literal searching.
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# 0 means backslash-parentheses are grouping, and plain parentheses
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# are for literal searching.
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RE_NO_BK_PARENS = 1
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# 1 means plain | serves as the "or"-operator, and \| is a literal.
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# 0 means \| serves as the "or"-operator, and | is a literal.
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RE_NO_BK_VBAR = 2
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# 0 means plain + or ? serves as an operator, and \+, \? are literals.
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# 1 means \+, \? are operators and plain +, ? are literals.
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RE_BK_PLUS_QM = 4
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# 1 means | binds tighter than ^ or $.
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# 0 means the contrary.
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RE_TIGHT_VBAR = 8
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# 1 means treat \n as an _OR operator
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# 0 means treat it as a normal character
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RE_NEWLINE_OR = 16
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# 0 means that a special characters (such as *, ^, and $) always have
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# their special meaning regardless of the surrounding context.
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# 1 means that special characters may act as normal characters in some
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# contexts. Specifically, this applies to:
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# ^ - only special at the beginning, or after ( or |
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# $ - only special at the end, or before ) or |
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# *, +, ? - only special when not after the beginning, (, or |
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RE_CONTEXT_INDEP_OPS = 32
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# ANSI sequences (\n etc) and \xhh
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RE_ANSI_HEX = 64
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# No GNU extensions
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RE_NO_GNU_EXTENSIONS = 128
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# Now define combinations of bits for the standard possibilities.
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RE_SYNTAX_AWK = (RE_NO_BK_PARENS | RE_NO_BK_VBAR | RE_CONTEXT_INDEP_OPS)
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RE_SYNTAX_EGREP = (RE_SYNTAX_AWK | RE_NEWLINE_OR)
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RE_SYNTAX_GREP = (RE_BK_PLUS_QM | RE_NEWLINE_OR)
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RE_SYNTAX_EMACS = 0
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# (Python's obsolete "regexp" module used a syntax similar to awk.)
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