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When i execute the below code, i get the right results:
for i in quorum:
lst.append(i.strip('l'))
print lst
op:
['val1', 'val2', 'val3']
but when i try to have the for loop along with list append function in single line, i don’t get the expected output (i.e the list elements as above).
what am i missing ? and why does it behave that way ?
lst.append(i.strip('l') for i in quorum)
print lst
op:
[<generator object <genexpr> at 0x2996cd0>]
Answer
The expression in parens is a generator expression (genex). It is an iterable, but list.append() doesn’t iterate. Fortunately list.extend() does:
lst.extend(i.strip('l') for i in quorum)
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