Raymond wrote:
For some reason I'm unable to grok Python's string.replace() function.
Just trying to parse a simple IP address, wrapped in square brackets,
from Postfix logs. In sed this is straightforward given:
line = "date process text [ip] more text"
sed -e 's/^.*\[//' -e 's/].*$//'
alternatively:
sed -e 's/.*\[\(.*\)].*/\1/'
yet the following Python code does nothing:
line = line.replace('^.*\[', '', 1)
line = line.replace('].*$', '')
Is there a decent description of string.replace() somewhere?
In python shell:
help(str.replace)
Online:
http://docs.python.org/lib/string-methods.html#l2h-255
But what you are probably looking for is re.sub():
http://docs.python.org/lib/node46.html#l2h-405
RB
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