Why do Modulenotfounderror And Importerror errors occur?
Below, are the common reason of occurring Modulenotfounderror and Importerror in Python.
- Missing Module
- Incorrect Module Name
- Circular Dependencies
Missing Module
The code attempts to import a module named non_existent_module. If the module is not found, it raises ModuleNotFoundError, and the exception is caught. The code then prints a message indicating the specific error using an f-string, including the details provided by the ModuleNotFoundError.
Python3
try: # Attempting to import a non-existent module import non_existent_module except ModuleNotFoundError as e: print(f"ModuleNotFoundError: {e}") |
ModuleNotFoundError: No module named 'non_existent_module'
Incorrect Module Name
Below, code tries to import a function named `non_existent_function` from the module `example_module`. If the function is not found, it raises an `ImportError`, and the exception is caught.
Python3
try: # Attempting to import a function that does not exist in the module from example_module import non_existent_function except ImportError as e: print(f"ImportError: {e}") |
ImportError: No module named 'example_module'
Circular Dependencies
Below, code represents Module A in a Python project. It attempts to import `function_b` from another module named `module_b`. It defines a function `function_a` that prints “Function A” and then calls both `function_a` and `function_b`. If executed, it will result in an `ImportError` due to circular dependencies.
Python3
# Module A # File: module_a.py from module_b import function_b def function_a(): print("Function A") function_a() function_b() |
Hangup (SIGHUP)
Traceback (most recent call last):
File "Solution.py", line 3, in <module>
from module_b import function_b
ModuleNotFoundError: No module named 'module_b'
How To Fix Modulenotfounderror And Importerror in Python
Two such errors that developers often come across are ModuleNotFoundError and ImportError. In this guide, we’ll explore what these errors are, the common problems associated with them, and provide practical approaches to resolve them.
What are ModuleNotFoundError and ImportError?
ModuleNotFoundError: This error occurs when Python cannot find the module specified in the import statement. It could be due to the module not being installed or the Python interpreter not being able to locate it in the specified paths.
ImportErrorare: This error is more generic and can occur for various reasons, such as a module within a package not being found, an incorrect module name, or issues with the module itself.
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