Python – Check if ke

In python, you can use the in operator to check if a key exists in a dictionary.

test.py

def main():
    fruits = {
        'apple':1,
        'orange':2,
        'banana':3
    }

    #if key 'apple' exists in fruits?
    if 'apple' in fruits:
        print(fruits['apple'])

if __name__ == '__main__':
    main()

Output

1

P.S Tested with Python 3.4.3
Note
has_key() is deprecated in favor of key in d.