Testing if value exists in a dictionary

Question

I was just wondering how would I be able test if the person is in the clubs dictionary.

clubs = {"basketball":[], "volleyball":[], "football":[]}
clubs["basketball"].append("John")
print(clubs)

#asking user for name
name = input("Enter a name.")
if name in clubs.values():
print(name, "is in a club")
else:
print(name, "is not in a club")

when name = John it prints saying “John is not in a club” but he is in the basketball club? How would I be able to fix this? Thank you :)

Answer 1

may be this can help you for dict update:
https://code.sololearn.com/cRkp6lrEtxb4/?ref=app

Answer 2

Because you are using lists as the clubs values, the interpreter sees them as lists

"John" != ["John"]

You could fix it like this

https://code.sololearn.com/c0AnoT98vnVR/?ref=app

Answer 3

clubs = {"basketball":[], "volleyball":[], "football":[]}
clubs["basketball"].append("John")
print(clubs)

#asking user for name
name = "John"
if name in clubs["basketball"]:
print(name, "is in a club")
else:
print(name, "is not in a club")

Answer 4

An alternative approach without using a loop:
from itertools import chain
name = "John"
if name in chain.from_iterable(clubs.values()):
print(f"{name} is in a Club")

Answer 5

Check out the update() method, I think that will work

https://www.w3schools.com/JUMP_LINK__&&__python__&&__JUMP_LINK/ref_dictionary_update.asp

something like this might help you out as well...

https://code.sololearn.com/cqbZK7wU8zLQ/?ref=app

Answer 6

thanks everyone :) is there a way to add a person to a club for example, name = input(“enter a name”) then that name can be appended to an existing team of their choice?