We can convert a string to Int in Python using a built-in function int(). This function takes a string as an argument and returns an integer. Let’s start coding

Code:

str = '123'
intg = int(str)
print("Value in str:", str)
print("Orignal Type:", type(str))
print("Converted Type:", type(intg))

Output:

Value in str: 123
Orignal Type: <class 'str'>
Converted Type: <class 'int'>

Error:

If the string cannot be converted to an integer, this function will return an error.

Code:

str = 'This is a string'
intg = int(str)
print("Value in str:", str)
print("Orignal Type:", type(str))
print("Converted Type:", type(intg))

Output:

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
d:\Study\Blog_Codes\string.ipynb Cell 6 in <cell line: 4>()
      1 #2 how to convert string to int in python
      3 str = 'This is a string'
----> 4 intg = int(str)
      5 print("Value in str:", str)
      6 print("Orignal Type:", type(str))

ValueError: invalid literal for int() with base 10: 'This is a string'

References:

https://docs.python.org/3/