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How to print to stderr in Python?

Printing stderr in Python: In this tutorial, we will learn how to print stderr in Python programming language. By Sapna Deraje Radhakrishna Last updated : January 03, 2024

Print to stderr in Python

The print() method in Python3 supports a file argument, which specifies where the function should write to given objects to. If not specified, then the print statements has defaulted to sys.stdout.

Syntax

print(argument1, argument2, ..., file = value)

Examples

Practice these examples to understand how to print to stderr in Python.

Example 1: Using Python 2

import sys
print >> sys.stderr , "Include help for learning"

Output

The output of the above example is:

Include help for learning

Example 2: Using Python 3

import sys
print('Include help for learning', file = sys.stderr)

Output

The output of the above example is:

Include help for learning

Example 3: Using Python 3

# Python code for printing to stderr

# importing the package
import sys # for sys.stderr

# variables
name = "Mike"
age = 21
city = "Washington, D.C."

print("printing to stderr...")
print(name, age, city, file=sys.stderr)

Output

The output of the above example is:

printing to stderr...
Mike 21 Washington, D.C.