diff options
Diffstat (limited to 'Doc/lib')
| -rw-r--r-- | Doc/lib/libre.tex | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/Doc/lib/libre.tex b/Doc/lib/libre.tex index ab51c10..ca829df 100644 --- a/Doc/lib/libre.tex +++ b/Doc/lib/libre.tex @@ -857,17 +857,17 @@ of backtracking, you may encounter a RuntimeError exception with the message \code{maximum recursion limit exceeded}. For example, \begin{verbatim} - >>> s = "<" + "that's a very big string!"*1000 + ">" - >>> re.match('<.*?>', s) - Traceback (most recent call last): - File "<stdin>", line 1, in ? - File "/usr/local/lib/python2.3/sre.py", line 132, in match - return _compile(pattern, flags).match(string) - RuntimeError: maximum recursion limit exceeded +>>> s = "<" + "that's a very big string!"*1000 + ">" +>>> re.match('<.*?>', s) +Traceback (most recent call last): + File "<stdin>", line 1, in ? + File "/usr/local/lib/python2.3/sre.py", line 132, in match + return _compile(pattern, flags).match(string) +RuntimeError: maximum recursion limit exceeded \end{verbatim} You can often restructure your regular expression to avoid backtracking. -The above regular expression can be recast as \regexp{\textless -[\textasciicircum \textgreater]*\textgreater}. As a further -benefit, such regular expressions will run faster than their backtracking -equivalents. +The above regular expression can be recast as +\regexp{\textless[\textasciicircum \textgreater]*\textgreater}. As a +further benefit, such regular expressions will run faster than their +backtracking equivalents. |