# Multiply numbers from user input in Python Last updated: Jul 9, 2022 Photo from Unsplash

## Multiply numbers from user input in Python#

To multiply numbers from user input:

1. Use the `int()` class to convert each value to an integer.
2. Use the multiplication operator to multiply the integers.
main.py
```Copied!```num_1 = input('Enter a number:')
print(num_1)  # 👉️ '5'
num_2 = input('Enter another number:')
print(num_2)  # 👉️ '10'

num_1 = int(num_1)
num_2 = int(num_2)

result = num_1 * num_2
print(result)  # 👉️ 50
``````

The input function takes an optional `prompt` argument and writes it to standard output without a trailing newline.

The function then reads the line from input, converts it to a string and returns the result.

The `input()` function returns a string even if the user entered a number.

main.py
```Copied!```num_1 = input('Enter a number:')
print(num_1)  # 👉️ '5'
``````

We have to use the `int()` or `float()` classes to convert the number to an integer or a float before multiplying.

If the expected value is a number, you can pass the call to the `input()` function to the `int()` class.

main.py
```Copied!```num_1 = int(input('Enter a number:'))
print(num_1)  # 👉️ 5

num_2 = int(input('Enter another number:'))
print(num_2)  # 👉️ 10

result = num_1 * num_2
print(result)  # 👉️ 50
``````

You can also extract the logic into a function which handles the scenario where the user enters a value that is not a valid number.

main.py
```Copied!```def multiply_inputs():
try:
num_1 = int(input('Enter a number:'))
num_2 = int(input('Enter another number:'))

return num_1 * num_2
except ValueError:
print('Input expects numbers')

result = multiply_inputs()
print(result)

while result is None:
result = multiply_inputs()

print(result)
``````

We used a `try/except` block to handle the possible `ValueError` that is raised when trying to convert an invalid number to an integer.

The `while` loop runs and calls the function if the `result` variable stores a `None` value (if the `except` block runs).

Note that you can also multiply a string by an integer to repeat the string N times.

main.py
```Copied!```print('a' * 3) # 👉️ 'aaa'
``````

When we multiply a string by an integer, the string gets repeated N times.

I wrote a book in which I share everything I know about how to become a better, more efficient programmer. You can use the search field on my Home Page to filter through all of my articles.