Dictionaries, call value from key

user_15135461 0
Viewed 94

I am trying to grab input and if the dictionary logins has a key that matches my input, I want to return the value of that key.

logins = {
    'admin':'admin',
    'turtle':'password123'
}

logging = input('username: ')

for logging in logins:
    print(logins.values())
python
3 Answers

Try this.

logins = {
    'admin':'admin',
    'turtle':'password123'
}

logging = input('username: ')

value = logins.get(logging, "Not found")
print(value)

Thanks to @deceze for kind suggestion

If you need an iteration with for, try

for login in logins:
    #do something with login
    # e.g. if login == input
user_44813120

No looping necessary, just lookup by key.

logging = input('username: ')
value = logins.get(logging)
if value is not None:
    print(value)
else:
    print(f"username {logging!r} was not found")

Alternatively:

print(logins[logging])

however this will raise a KeyError exception if the key logging is not in the dictionary

mhawke_219450

You're on the right path. All you need to do is make use of the native property of dictionary to find if the element is in dictionary:

logins = {
    'admin':'admin',
    'turtle':'password123'
}

logging = input('username: ')

if logging in logins:
  print(logins[logging])
user_150966800
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