How do I check if an input is in a list in python? [duplicate]

Question

I want to be able to enter a value and check if it is in a list and if it is then in the list run a the rest of the program wanted.

a=input('enter value')
b=(1,2,3,4)
c=(5,6,7,8,9)
if a is in b:
   print 'enter in code thats wanted'

Please read pep-8 on how to format your python code properly. — georg
– georg, Commented Jun 25, 2012 at 8:32
thanks I have gone through a load of python tutorials and regular look up it on the documentation python — fanjojo
– fanjojo, Commented Jun 25, 2012 at 14:05

theharshest · Accepted Answer · 2012-06-25 08:30:00Z

16

You've written it yourself almost correctly, just instead of -

if a is in b:

it should be -

if a in b:

answered Jun 25, 2012 at 8:30

theharshest

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Comments

avasal · Accepted Answer · 2012-06-25 08:29:23Z

6

condition should be

if a in b:
    print 'enter in code thats wanted'

answered Jun 25, 2012 at 8:29

avasal

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Azer · Accepted Answer · 2019-06-20 13:42:27Z

1

in operator: The ‘in’ operator is used to check if a value exists in a sequence or not. Evaluates to true if it finds a variable in the specified sequence and false otherwise.
‘is’ operator: Evaluates to true if the variables on either side of the operator point to the same object and false otherwise.

hence:

if a in b:
    print 'enter in the code that\'s wanted'

Azer

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answered Jun 20, 2019 at 12:44

Tanmesh Shah

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The Mid-End Gamer · Accepted Answer · 2021-09-15 13:34:07Z

0

It should be like this ↓

a=input('enter value')
b=(1,2,3,4)
c=(5,6,7,8,9)
if a in b:
print ('enter in code thats wanted')

answered Sep 15, 2021 at 13:34

The Mid-End Gamer

1