str() Built-in Function

Python str()

Python str() built-in function is used to create a string version of the object that would be passed as argument to it.

In this tutorial, you will learn the syntax of str() function, and then its usage with the help of example programs.

Syntax of str()

The syntax of str() function is

class str(object='')
#or
class str(object=b'', encoding='utf-8', errors='strict')

where

Parameter	Description
`object`	[Optional] An object.
`encoding`	[Optional] The encoding to use to generate the string representation of given object.
`errors`	[Optional] Flat that specifies how to handle the encoding errors.

If no object is provided, str() returns an empty string.

Examples

1. Convert list to string

In this example, we will pass list object as argument to str() function. str() function returns string object.

Python Program

myList = [25, 'hello world', 36.25]
resultString = str(myList)
print(f'Resulting string is - "{resultString}"')

Output

Resulting string is - "[25, 'hello world', 36.25]"

2. str() with no argument

In this example, we will pass no argument to the str() function. str() function should return an empty string.

Python Program

resultString = str()
print(f'Resulting string is - "{resultString}"')

Output

Resulting string is - ""

3. str() with encoding

Let us use the second form of str() function, and pass encoding as well to the str() function.

Python Program

bytes = b'\x65\x66\x67\x68\x69'
resultString = str(bytes, encoding='utf-8')
print(f'Resulting string is - "{resultString}"')

Output

Resulting string is - "efghi"

Summary

In this Python Built-in Functions tutorial, we learned the syntax of str() function, and how to convert any object to its string version using str() function with examples.