# Convert string to integer in Python

• Difficulty Level : Basic
• Last Updated : 29 Apr, 2020

In Python an strings can be converted into a integer using the built-in `int()` function. The int() function takes in any python data type and converts it into a integer.But use of the `int()` function is not the only way to do so. This type of conversion can also be done using the`float()` keyword, as a float value can be used to compute with integers.

Below is the list of possible ways to convert an integer to string in python:

1. Using int() function

Syntax: int(string)

Example:

 `num ``=` `'10'`` ` `# check and print type num variable``print``(``type``(num)) `` ` `# convert the num into string ``converted_num ``=` `int``(num)`` ` `# print type of converted_num``print``(``type``(converted_num))`` ` `# We can check by doing some mathematical operations``print``(converted_num ``+` `20``)`

As a side note, to convert to float, we can use float() in Python

 `num ``=` `'10.5'`` ` `# check and print type num variable``print``(``type``(num)) `` ` `# convert the num into string ``converted_num ``=` `float``(num)`` ` `# print type of converted_num``print``(``type``(converted_num))`` ` `# We can check by doing some mathematical operations``print``(converted_num ``+` `20.5``)`

2. Using float() function

We first convert to float, then convert float to integer. Obviously the above method is better (directly convert to integer)

Syntax: float(string)

Example:

 `a ``=` `'2'``b ``=` `'3'`` ` `# print the data type of a and b``print``(``type``(a))``print``(``type``(b))`` ` `# convert a using float``a ``=` `float``(a)`` ` `# convert b using int``b ``=` `int``(b)`` ` `# sum both integers``sum` `=` `a ``+` `b`` ` `# as strings and integers can't be added``# try testing the sum``print``(``sum``)`

Output:

```class 'str'
class 'str'
5.0```

Note: float values are decimal values that can be used with integers for computation.

My Personal Notes arrow_drop_up