Methods on file-like objects can only used once on one object?

Yingjie Lin Yingjie.Lin at mssm.edu
Tue Aug 23 16:21:09 CEST 2011


Hi Python users,

I just realize that my post yesterday shouldn't be specifically for mechanize. It should be a general question for file-like objects.

>>> f = open('my_file.txt')
>>> print f.readlines()
	( prints a list of strings
>>> print f.readlines()
[]

There are quite a few methods for file-like objects that can only be used once on one object. If I prefer to use some of these methods on one object, one after another, like:

f.readlines()
f.read()
...

What should I do? Thank you.

- Yingjie










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