stretching list comprehensions
Delaney, Timothy C (Timothy)
tdelaney at avaya.com
Mon Aug 11 19:43:36 EDT 2003
> From: Simon Burton [mailto:simonb at webone.com.au]
>
> >>> del y
> >>> nums = [ x+y for x in range(y) for y in range(10) ]
> Traceback (most recent call last):
> File "<stdin>", line 1, in ?
> NameError: name 'y' is not defined
> >>>
That is exactly equivalent to:
nums = []
for x in range(y):
for y in range(10):
nums.append(x + y)
I'll leave it to you to work out the required modification to make the above list comprehension work.
As a rule of thumb - keep list comprehensions very simple. Otherwise they become incomprehensible ...
Tim Delaney
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