How To Pass Function As Argument To Another Function In Python

Passing a function as an argument to another function is a powerful feature in Python that allows for dynamic programming. This tutorial will guide you on how to pass a function as an argument to another function in Python.

Steps:

1. Define the functions that will be used as arguments. For demonstration purposes, we will define two functions: add and subtract.

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def add(x, y):
    return x + y
 
def subtract(x, y):
    return x - y

2. Define the function that will receive the function arguments. For this example, we will define a calculator function that will take two numbers and a function to perform an operation on the numbers.

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def calculator(x, y, func):
    return func(x, y)

3. Call the calculator function with the two numbers and the function you want to perform. In this example, we will call the calculator function with the numbers 5 and 3 and the add function to get the sum of 5 and 3.

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result = calculator(5, 3, add)
print(result)

The output should be:

8

4. You can also call the calculator function with the subtract function to get the difference of 5 and 3.

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result = calculator(5, 3, subtract)
print(result)

The output should be:

2

Conclusion

In conclusion, passing a function as an argument to another function can be a powerful tool in Python for dynamic programming. By following the steps laid out in this tutorial, you now know how to pass a function as an argument to another function in Python.

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def add(x, y):
    return x + y
 
def subtract(x, y):
    return x - y
 
def calculator(x, y, func):
    return func(x, y)
 
result = calculator(5, 3, add)
print(result)
 
result = calculator(5, 3, subtract)
print(result)