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I'm trying to add some explicit exceptions to a piece of code, but the problem is that I have Python 3 and it has to be Python 2.7 compatible with the ModuleNotFoundError in Python 3. So any which exception is similar to that in Python 2.7?
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Python's ImportError ( ModuleNotFoundError ) indicates that you tried to import a module that Python doesn't find. It can usually be eliminated by adding a file named __init__.py to the directory and then adding this directory to $PYTHONPATH .
As the name implies, this error occurs when you're trying to access or use a module that cannot be found. In the case of the title, the "module named Python" cannot be found. Here are a few reasons why a module may not be found: you do not have the module you tried importing installed on your computer.
The ImportError is raised when an import statement has trouble successfully importing the specified module. Typically, such a problem is due to an invalid or incorrect path, which will raise a ModuleNotFoundError in Python 3.6 and newer versions.
Use ImportError. ModuleNotFoundError is a subclass of ImportError, and a very new one, having only been introduced in Python 3.6.
If you want to use ModuleNotFoundError when it's available and ImportError if it's not, you can make a feature check:
try:
ModuleNotFoundError
except NameError:
ModuleNotFoundError = ImportError
# later
raise ModuleNotFoundError(whatever_message)
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