+- Python Forum (https://python-forum.io)
+-- Forum: Python Coding (https://python-forum.io/forum-7.html)
+--- Forum: General Coding Help (https://python-forum.io/forum-8.html)
+--- Thread: list comprehension error (/thread-6060.html)
list comprehension error - atux_null - Nov-04-2017
hi. i am looking to create a list [10,0,10,0]. up to now i have the following code:
mylist=[10 if i%2==1 else 0 for i in range(1,5)]the above returns [10,0,10,0]. Any ideas on how to fix that please?
RE: list comprehension error - buran - Nov-04-2017
Your goal
(Nov-04-2017, 06:03 PM)atux_null Wrote: i am looking to create a list [10,0,10,0]
the output of your script:
(Nov-04-2017, 06:03 PM)atux_null Wrote: the above returns [10,0,10,0]
what is the problem?
RE: list comprehension error - atux_null - Nov-04-2017
sorry, typo. i need to have [10,0,10,10]
RE: list comprehension error - buran - Nov-04-2017
what is the logic? because without underlying logic here it is:
mylist = [10, 0, 10, 10]
RE: list comprehension error - atux_null - Nov-04-2017
the logic is to have in the format:
mylist=[___for i in range(1,5)]where ___ needs to get substituted from the necessary part of the code to make the list have [10,0,10,10]
RE: list comprehension error - buran - Nov-04-2017
again what is the logic -how you decide 10 or 0?
RE: list comprehension error - wavic - Nov-04-2017
10 if the number is odd else 1?
RE: list comprehension error - atux_null - Nov-04-2017
the code
10 if the number is odd else 1? returns [10,1,10,1]
RE: list comprehension error - Mekire - Nov-05-2017
(Nov-04-2017, 08:03 PM)atux_null Wrote: the logic is to have in the format:Well, I mean:mylist=[___for i in range(1,5)]where___needs to get substituted from the necessary part of the code to make the list have[10,0,10,10]
>>> [0 if i == 2 else 10 for i in range(1,5)] [10, 0, 10, 10] >>>Seems to get what you want, but I've got to say that is a really stupid problem.