mirror of https://github.com/python/cpython
Backport doc fixes from 2.6. These are all things that were already
supported but weren't in the docs, like conditional backreferences.
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Lib/re.py
16
Lib/re.py
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@ -29,7 +29,8 @@ concatenate ordinary characters, so last matches the string 'last'.
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The special characters are:
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"." Matches any character except a newline.
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"^" Matches the start of the string.
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"$" Matches the end of the string.
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"$" Matches the end of the string or just before the newline at
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the end of the string.
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"*" Matches 0 or more (greedy) repetitions of the preceding RE.
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Greedy means that it will match as many repetitions as possible.
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"+" Matches 1 or more (greedy) repetitions of the preceding RE.
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@ -37,7 +38,7 @@ The special characters are:
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*?,+?,?? Non-greedy versions of the previous three special characters.
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{m,n} Matches from m to n repetitions of the preceding RE.
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{m,n}? Non-greedy version of the above.
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"\\" Either escapes special characters or signals a special sequence.
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"\\" Either escapes special characters or signals a special sequence.
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[] Indicates a set of characters.
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A "^" as the first character indicates a complementing set.
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"|" A|B, creates an RE that will match either A or B.
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@ -50,6 +51,10 @@ The special characters are:
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(?#...) A comment; ignored.
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(?=...) Matches if ... matches next, but doesn't consume the string.
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(?!...) Matches if ... doesn't match next.
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(?<=...) Matches if preceded by ... (must be fixed length).
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(?<!...) Matches if not preceded by ... (must be fixed length).
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(?(id/name)yes|no) Matches yes pattern if the group with id/name matched,
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the (optional) no pattern otherwise.
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The special sequences consist of "\\" and a character from the list
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below. If the ordinary character is not on the list, then the
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@ -76,6 +81,7 @@ This module exports the following functions:
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subn Same as sub, but also return the number of substitutions made.
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split Split a string by the occurrences of a pattern.
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findall Find all occurrences of a pattern in a string.
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finditer Return an iterator yielding a match object for each match.
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compile Compile a pattern into a RegexObject.
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purge Clear the regular expression cache.
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escape Backslash all non-alphanumerics in a string.
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@ -83,8 +89,10 @@ This module exports the following functions:
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Some of the functions in this module takes flags as optional parameters:
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I IGNORECASE Perform case-insensitive matching.
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L LOCALE Make \w, \W, \b, \B, dependent on the current locale.
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M MULTILINE "^" matches the beginning of lines as well as the string.
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"$" matches the end of lines as well as the string.
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M MULTILINE "^" matches the beginning of lines (after a newline)
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as well as the string.
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"$" matches the end of lines (before a newline) as well
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as the end of the string.
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S DOTALL "." matches any character at all, including the newline.
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X VERBOSE Ignore whitespace and comments for nicer looking RE's.
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U UNICODE Make \w, \W, \b, \B, dependent on the Unicode locale.
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