John Machin wrote:
> ... AND it's about time that list is updated to include False explicitly
> -- save nitpicking arguments about whether False is covered by
> "numeric zero of all types" :-)
Done.
>> If I try:
>>
>> f = open("blah.txt", "r")
>> while (c = f.read(1)) != '':
>> # ... work on c
>>
>> I get a syntax error also. :(
>>
>> Is this related to Python's expression vs. statement syntactic
>> separation? How can I be write this code more nicely?
>>
>> Thanks
>>
>
> How about
> for c in f.read():
> ?
> Note that this reads the whole file into memory (changing \r\n to \n on
> Windows) ... performance-wise for large files you've spent some memory
> but clawed back the rather large CPU time spent doing f.read(1) once per
> character. The "more nicely" factor improves outasight, IMHO.
>
> Mild curiosity: what are you doing processing one character at a time
> that can't be done with a built-in function, a standard module, or a
> 3rd-party module?
Don't forget
for line in f:
for c in line:
# do stuff
Reinhold
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