problems with tkinter updates

[Peter Otten]

woooee wrote:

[Peter Otten]
>>     line = next(infile, None)
>>     if line is not None:

> if line is not None: probably does not work the way you expect.  

It does what I expect.

> You might try
> if line.strip():
> Take a look at this quick example
> 
> test_lines = ["Number 1\n", "\n", ""]
> for ctr, line in enumerate(test_lines):
>     print ctr, line
>     if line is not None:
>          print "     not None"

Modify your example to

>>> test_lines = ["Number 1\n", "\n", ""]
>>> test_lines = iter(test_lines)
>>> while True:
...     line = next(test_lines, None)
...     if line is None:
...             print "we're done"
...             break
...     print repr(line)
...
'Number 1\n'
'\n'
''
we're done

and be enlightened ;)