On 10/12/2014 07:08 PM, Shiva wrote:
while ans.lower() != 'yes' or ans.lower()[0] != 'y':
ans = input('Do you like python?')
I personally consider double negations less intuitive than following:
while not( ans.lower() == 'yes' and ans.lower()[0] == 'y' ):
Reading this line yoy would have noticed as wellm that what you really
wanted would have been:
while not( ans.lower() == 'yes' or ans.lower()[0] == 'y' ):
I would write the coder differently.
With your code you have to pre-initialze the variable ans.
I personally consider it also more 'intuitive' / easier to understand if
I can see the break conditiion. to many nots / != / negations can be
confusing as you noticed yourself.
Taking into account the Steven's suggestion about using the 'in'
expression it could be:
while True:
ans = input('Do you like python?')
if ans.lower() in ('yes', 'y'):
break
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