On Aug 22, 9:01 am, Ben Keshet <[EMAIL PROTECTED]> wrote:
> Thanks for the reference. I tried it with a general example and got it
> to work - I used an index that counts up to a threshold that is set to
> break. It does not work though with my real code. I suspect this is
> because I cannot really read any lines from an empty file, so the code
> gets stuck even before I get to j=j+1:
>
> line = f.readline()[:-1]
> j=0
> while 'PRIMARY' not in line:
> line = f.readline()[:-1]
> j=j+1
> if j==30:
> break
>
> Any suggestions?
>
(1) don't top-post
(2) use a 'for' statement
(3) readline is antique
(4) don't throw away the last character in the line without knowing
what it is
for line in f:
line = line.rstrip('\n')
# do something useful here
if 'PRIMARY' in line:
break
# do more useful stuff here
A quick rule of thumb for Python: if your code looks ugly or strained
or awkward, it's probably also wrong.
HTH,
John
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