CODEWITHSUNDEEP
pythonredis-py
Steeven_b
Steeven_b

Reputation: 777

Python None check (redis)

I am coding an module using redis-py, here I have a problem :

def get_users_from_usergroup(usergroup):
get_result = r_server.hmget('usergroups', usergroup)
if get_result is not None:
    print('users from the given usegroup [' + usergroup + '] are :')
    print(get_result)
    return (get_result)
else:
   print("Usergroup not found")
   return "error"

I make a check on None values but it doesn't work I never enter in the else loop, even though the result is None. Output :

users from the given usegroup [random] are :
[None]
users from the given usegroup [random] are :
[None]
users from the given usegroup [random] are :
['as872 bs940 e0286']

I have probably missed something but I don't know what.

Upvotes: 0

Views: 1240

Answers (1)

Jivan
Jivan

Reputation: 23098

>>> [None] is None
False

is the answer to your question. Try to change your condition to:

if get_result[0]:
    # there are results
else:
    # there are no results

Upvotes: 1

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