[Tutor] Naive Questions

[Yann Le Du]

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On Sun, 1 Dec 2002, Michael Powe wrote:

> a couple questions to which i haven't been able to find answers.
> 
> i don't seem to find a python equivalent to the "rewind" file operation
> in C -- that is, i read through a file and i want to go back to the
> beginning and read again.  is the only option to close & reopen?

No. You can use :

f.seek(0,0)   # to go back at file's beginning

see http://diveintopython.org/fileinfo_files.html for more.

> 
> and just from curiosity, why are there no increment/decrement operators,
> and nothing equivalent to += & its friends?  i'd have thought this
> would be a faq, but don't find anything about it there.
> 
> the first item actually relates to something i'm working on.  the second,
> just that i'm lazy & find having to always type out i = i+1 annoying.  ;-)

These things work in the Python I use, i.e. 2.2

Y

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