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+--- Thread: can only concatenate list (not "int") to list? (/thread-1621.html)
can only concatenate list (not "int") to list? - landlord1984 - Jan-17-2017
I can do:
[1, 2, 3] + [4, 5, 6]
But I cannot do:
nums=[1, 2, 3] nums[1:]+nums[0]TypeError: can only concatenate list (not "int") to list
Why?
RE: can only concatenate list (not "int") to list? - Larz60+ - Jan-17-2017
see: http://c4m.cdf.toronto.edu/cohort1/winterphase/level3/ListsStringsLoopsFunctions.html
Specifically In [4]:
not with a slice, but same thing.
essentially nums[0] is considered an int, not a list
concatenate must be list + list, not list + int
so the following works:
n = [1,2,3,4,5] n1 = n[3:]+n[4:] print(n1)
RE: can only concatenate list (not "int") to list? - landlord1984 - Jan-17-2017
(Jan-17-2017, 05:38 AM)Larz60+ Wrote: n = [1,2,3,4,5]
n1 = n[3:]+n[4:]
print(n1)
Thanks. I tried out a better way:nums[1:]+[nums[0]]