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Editorial Team
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Asked: 2026-05-16T08:00:41+00:00

>>> f = open(‘/tmp/version.txt’, ‘r’) >>> f <open file ‘/tmp/version.txt’, mode ‘r’ at 0xb788e2e0>

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>>> f = open('/tmp/version.txt', 'r')
>>> f
<open file '/tmp/version.txt', mode 'r' at 0xb788e2e0>
>>> f.readlines()
['2.3.4\n']
>>> f.readlines()
[]
>>>

I’ve tried this in Python’s interpreter. Why does this happen?

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1 Answer

  1. Editorial Team

    You need to seek to the beginning of the file. Use f.seek(0) to return to the begining:

    >>> f = open('/tmp/version.txt', 'r')
>>> f
<open file '/tmp/version.txt', mode 'r' at 0xb788e2e0>
>>> f.readlines()
['2.3.4\n']
>>> f.seek(0)
>>> f.readlines()
['2.3.4\n']
>>>
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