Fix Python – Changing file extension in Python


Asked By – MysticCodes

Suppose from with CGI, I have post file foo.fasta to display file. I want to change foo.fasta‘s file extension to be foo.aln in display file. How can I do it?

Now we will see solution for issue: Changing file extension in Python


os.path.splitext(), os.rename()

for example:

# renamee is the file getting renamed, pre is the part of file name before extension and ext is current extension
pre, ext = os.path.splitext(renamee)
os.rename(renamee, pre + new_extension)

This question is answered By – Ignacio Vazquez-Abrams

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