CODEWITHSUNDEEP
pythonpython-3.x
guettli
guettli

Reputation: 27061

Automatic Code Update for Exception Handling in Python

This older syntax was removed in Python 3:

try:
    ...
except MyException, exc:    # Don't do that!
    ...

New

try:
    ...
except MyException as exc:
    ...

I checked how many times the old syntax gets used in the code I work on:

find */* -name '*.py'|xargs grep 'except.*,.*:'| wc -l
551

Wow, that's a lot

Is there a way to automated this particular Python2 to Python3 update?

Upvotes: 0

Views: 56

Answers (1)

guettli
guettli

Reputation: 27061

... answering my own question. I found the futurize from python-future:

futurize --write --nobackups --fix lib2to3.fixes.fix_except src/mylib/

It supports a lot of other fixes, but today I want to focus in the exception handling.

It works well and saves me a lot of time :-)

Upvotes: 1

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