Problem with "If line is None: break"

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February 3rd, 2012, 10:48 AM

pullingMyHair

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Join Date: Feb 2012

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Problem with "If line is None: break"

I am trying to get read a line of a text file one by one by using the following statements:

Code:


f = open("numbers.txt", 'r')
while True:
    line = f.readline()
    if line is None:
        break

The problem is that it is not breaking when it reaches the end of the last line of the text file but instead goes into an infinite loop.

Could someone please explain to me what I am doing wrong?

February 3rd, 2012, 10:59 AM

pullingMyHair

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Join Date: Feb 2012

Posts: 6

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Never mind. I replaced "if line is None: break" with" if not line: break"

February 3rd, 2012, 05:32 PM

b49P23TIvg

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Join Date: Aug 2011

Posts: 1,075

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preferred way to write this

Code:

with open("numbers.txt", 'r') as f:
    for line in f:
        process(line)

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