On 2017-04-22 01:17, Rory Schramm wrote:
Hi,
I'm trying to use python list comprehensions to combine multiple terms for
use by a for loop if condition.
filters = [ 'one', 'two', 'three']
for line in other_list:
if ' and '.join([item for item in filters]) not in line[2]:
print line
The list comp returns one and two and three and ..
The problem I'm having is the for loop isn't filtering out the terms from
the filter list. I suspect the problem is the if condition is treating the
results for the list comprehension as a literal string and not part of the
if condition itself. I'm not sure how to fix this though.
Correct. The join is returning 'one and two and three'. The condition is
true if that string isn't in line[2]. (What is line? Is it a string? If
so, then line[2] is one character of that string.)
Any ideas on How to make this work?
If you want it to do this:
if 'one' not in line[2] and 'two' not in line[2] and 'three' not in
line[2]:
you can write:
if all(word not in line[2] for word in filters):
or:
if not any(word in line[2] for word in filters):
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