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in Python by (47.6k points)

I have read that when a file is opened using the below format

with open(filename) as f: 

#My Code 

f.close()

explicit closing of file is not required. Can someone explain why is it so? Also if someone does explicitly close the file, will it have any undesirable effect?

1 Answer

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by (106k points)

 To open and close a file in Python you leave the nested block, Python automatically calls f.close() for you.

It doesn't matter whether you leave by just falling off the bottom, or calling break/continue/return to jump out of it, or raise an exception; no matter how you leave that block. It always knows you're leaving, so it always closes the file.*

To know more about this you can have a look at the following video tutorial:-

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