File tests in Python? [duplicate]

Question

I'd like to use Python 3.3.3 to test for the existence of a backup file.

Something like this:

if backup does not exist:
    create it
    write to backup

otherwise:
    run other procedures not related to backup file

Any suggestions?

please search before asking, this has been asked and answered. — njzk2
– njzk2, Commented Jan 24, 2014 at 16:46

falsetru · Accepted Answer · 2014-01-24 16:44:41Z

5

>>> import os
>>> os.path.isfile('/path/to/file')
False

answered Jan 24, 2014 at 16:44

falsetru

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1 Comment

Please insert here the usual warning of introducing race conditions etc...

nmichaels · Accepted Answer · 2014-01-24 16:45:36Z

2

Take a look at os.path.exists.

answered Jan 24, 2014 at 16:45

nmichaels

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