# 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.

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