What is ModuleNotFoundError: No module named Error in Python?

The “No Module Named…” error is raised when Python attempts to import a module that it cannot locate. Modules are essentially Python files containing functions and variables that can be reused in different parts of a program. When Python encounters an import statement, it searches for the specified module in its standard library and other directories. If the module is not found, the “No Module Named…” error is triggered.

Syntax:

ModuleNotFoundError: No module named

Below, are the reasons for occurring ModuleNotFoundError: No module named Error in Python:

• Module Not Installed
• Incorrect Module Name
• Incorrect Directory Structure

Module Not Installed

The most common reason for this error is that the required module is not installed on the system. Python relies on external packages and modules to extend its functionality, and if a module is not installed, Python cannot find it during the import.

Output

Hangup (SIGHUP)
Traceback (most recent call last):
  File "Solution.py", line 2, in <module>
    import requests
ModuleNotFoundError: No module named 'requests

Incorrect Module Name

Typos or incorrect module names in the import statement can also lead to this error. Python is case-sensitive, so a slight difference in the module name will result in a “No Module Named…” error.

Output

Hangup (SIGHUP)
Traceback (most recent call last):
  File "Solution.py", line 1, in <module>
    import jso
ModuleNotFoundError: No module named 'jso'

Incorrect Directory Structure

If the module is part of your project but is not in the correct directory or is not properly structured, Python may not be able to locate it. Ensuring the correct directory structure and proper packaging is essential to avoid this error.

Output

Hangup (SIGHUP)
Traceback (most recent call last):
  File "Solution.py", line 2, in <module>
    from myproject.mymodule import myfunction
ModuleNotFoundError: No module named 'myproject'

One common error that developers often come across is the ModuleNotFoundError error. The ModuleNotFoundError error is raised when Python attempts to import a module that it cannot locate. In this article, we will see the reasons and approaches to solving ModuleNotFoundError in Python.