Bugs item #1448325, was opened at 2006-03-12 09:46
Message generated for change (Comment added) made by donallen
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Category: Regular Expressions
Group: Python 2.4
Status: Open
Resolution: None
Priority: 5
Submitted By: Don Allen (donallen)
Assigned to: Gustavo Niemeyer (niemeyer)
Summary: re search infinite loop
Initial Comment:
Given the attached test.csv file, the following program
loops forever (can't even ^c):
import re
orig = open('test.csv')
file_contents = orig.read()
orig.close()
find_line = re.compile(r'^(".*")?(,(".*")?)*\n')
search_result = find_line.search(file_contents)
print search_result.span()
The corresponding tcl program works correctly:
set orig [open test.csv r]
set file_contents [read $orig]
close $orig
regexp -indices {^(".*")?(,(".*")?)*\n} $file_contents
\ indices
puts "Indices were $indices"
Both tests were run on a TP G41 running Gentoo Linux.
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>Comment By: Don Allen (donallen)
Date: 2006-03-12 10:22
Message:
Logged In: YES
user_id=1474165
If you eliminate the \n at the end of the regular
expression, the python program works correctly (for this
example; I am trying to use regular expressions to parse the
.csv files generated by Microsoft Outlook, which contain
eols inside fields, so I'm trying to find the eols *not*
inside fields with this regexp, so I need the \n; I'll have
to go to Plan B, I suppose).
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