Python - convert string to integer

In this article, we would like to show you how to convert string to integer in Python.

Quick solution:

number = "123"
result = int(number)

print(type(result))  # <class 'int'>

1. Practical example using int()

In this example, we simply use int() to convert the string to the integer.

number = "123"
result = int(number)

print(result)        # 123
print(type(result))  # <class 'int'>

Output:

123
<class 'int'>

2. Alternative solution

In this example, we use decimal.Decimal() to a float number. This solution doesn't round the number with more than 15 decimal places like float().

from decimal import Decimal

number = "1.1111111111111111"
result = Decimal(number)

print(result)        # 1.1111111111111111
print(type(result))  # <class 'decimal.Decimal'>

Output:

1.1111111111111111
<class 'decimal.Decimal'>