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Python bytes() Function

The python bytes() function in Python is used for returning a bytes object. It is an immutable version of bytearray() function.

It can create empty bytes object of the specified size.


  • bytes(source)
  • bytes(encoding)
  • bytes(error)


source is used to initialize the bytes object. It is an optional parameter.

encoding is optional unless source is string type. It is used to convert the string to bytes using str.encode() function

errors is also an optional parameter. It is used when the source is string type. Also, when encoding fails due to some error.


It returns a bytes object.

Let's see some examples of bytes() function to understand it's functionality.

Python bytes() Function Example 1

This is a simple example of converting string into bytes.


b ' Hello World.'

Python bytes() Function Example 2

This example creates a byte of a given integer size.



Python bytes() Function Example 3

This example converts iterable list to bytes.



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B.Tech / MCA