Python – Store Function as dictionary value

Given a dictionary, assign its keys as function calls.

Case 1 : Without Params. 

The way that is employed to achieve this task is that, function name is kept as dictionary values, and while calling with keys, brackets ‘()’ are added.

Python3

# Python3 code to demonstrate working of
# Functions as dictionary values
# Using Without params

# call Gfg fnc
def print_key1():
    return "This is Gfg's value"

# initializing dictionary
# check for function name as key
test_dict = {"Gfg": print_key1, "is" : 5, "best" : 9}

# printing original dictionary
print("The original dictionary is : " + str(test_dict))

# calling function using brackets
res = test_dict['Gfg']()

# printing result
print("The required call result : " + str(res))

Output

The original dictionary is : {'Gfg': <function print_key1 at 0x7f1c0445be18>, 'is': 5, 'best': 9}
The required call result : This is Gfg's value

Time Complexity: O(n)
Auxiliary Space: O(1)

Case 2 : With params 

The task of calling with params is similar to above case, the values are passed during function call inside brackets as in usual function calls.

Python3

# Python3 code to demonstrate working of
# Functions as dictionary values
# Using With params

# call Gfg fnc
def sum_key(a, b):
    return a + b

# initializing dictionary
# check for function name as key
test_dict = {"Gfg": sum_key, "is" : 5, "best" : 9}

# printing original dictionary
print("The original dictionary is : " + str(test_dict))

# calling function using brackets
# params inside brackets
res = test_dict['Gfg'](10, 34)

# printing result
print("The required call result : " + str(res))

Output

The original dictionary is : {'Gfg': <function sum_key at 0x7f538d017e18>, 'is': 5, 'best': 9}
The required call result : 44