Hello,
I'm learning Python and in my studies I came across the following situation:
>>> responses = ['Y', 'Yes', 'No', 'no', '', 'Yep']
>>> responses = [x[0].lower() if x else 'n' for x in responses]
>>> responses
['y', 'y', 'n', 'n', 'n', 'y']
I can not understand, in this case what makes x True or False ?
I thank you for your attention.
See another version without the listcomps:
responses = ['Y', 'Yes', 'No', 'no', '', 'Yep']
n=0
for x in responses:
n+=1
if x:
print(x,n)
else:
print ('o unico elemento em que x é false', n)
Y 1
Yes 2
No 3
no 4
o unico elemento em que x é false 5
Yep 6
That is, x is false only in the element where the string is null.