to do string substitutions in python, use the “re” module and the “sub” function:>>> import re…>>> test = “2545423/1-4242:0.3245″>>> test ; re.sub(”/\d-\d*:”,”:”,test) ‘2545423/1-4242:0.3245′ ‘2545423:0.3245′and, to match a group and then use it in the substitution, use parentheses and the \<number> …
Blogs / from the desk of stinkpot
from the desk of stinkpot
like adult diapers for my brain, this blog will prevent all those useful programming and computer tricks i've learned from leaking out of my head.
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using python to do perl-like text manipulation
http://desk.stinkpot.org:8080/tricks/index.php/2009/04/... -
handle ps2pdf dependency errors with ghostscript
http://desk.stinkpot.org:8080/tricks/index.php/2009/04/...while trying to upgrade my packages, i got caught with the following error:Removing ghostscript … Purging font configuration of gs… No alternatives for ps2pdf. dpkg: error processing ghostscript (–remove): subprocess pre-removal script returned error exit status 1 Errors were encountered while …
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wait for an executed subprocess to complete in python
http://desk.stinkpot.org:8080/tricks/index.php/2009/03/...if you call a shell process from python, your script will normally trundle along without pausing for that process to complete. if you’d like the process to finish before your script continues on, use the communicate method:proc = sub.Popen(my_job,stdout=sub.PIPE) stdout,stderr = proc.communicate()…
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