Check a value against a list of possible values

Question

I need something that checks the length of a list. Maybe something like this, but this does not work:

if len(list) != 1 or 2:
   # Do something

if len(list) == 1 or 2:
   # Do something different

Ok i figured this out myself:

if len(list) == 1:
   # Do something
elif len(list) == 2:
   # Do the same something

if len(list) != 2:
   # Do something different
elif len(list) != 1:
   # Do something different

do you need the comparison to be a range, or a list of possible numbers? Like would you ever do something if it equaled 1,2,5, or 6? — Hoopdady, Oct 18 '16 at 20:51

score 3 · Answer 1 · edited Oct 19 '16 at 00:51

3

Something like

if 1 <= len(list) <= 2:
    ...

or:

if len(list) in (1, 2):
    ...

should work

edited Oct 19 '16 at 00:51

nalzok

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answered Oct 18 '16 at 20:49

Francisco

10,005
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I shall quickly try this thanks for the quick reply! – ComputerExpert69 Oct 18 '16 at 20:49
Well it seems that your second suggestion is returning True or False... – ComputerExpert69 Oct 18 '16 at 21:01
Both of these are returning true or false – ComputerExpert69 Oct 18 '16 at 21:02
I simply want the number of elements within the list – ComputerExpert69 Oct 18 '16 at 21:03
To get the length of a list you can just call `len(myList)`. You should also refrain from using "list" as the identifier for your list since it is reserved for the list command in Python. – eeScott Oct 18 '16 at 21:15

Check a value against a list of possible values

1 Answers1