How to import module when a module name contains a '-' dash or hyphen?
In Python, importing a module with a "-" can be a little challenging. However, importlib.import_module
is your breakthrough. It can dynamically import modules, including those with hyphenated names:
Your hyphen_module
is good to go, and you can access all its attributes and methods just as you usually would.
Delving into importlib
Python’s import system is like a backstage tech wizard, enabling the magic of import. So, while the naming conventions of Python may grimace at the sight of a hyphen, importlib
knows the trick!
Now module_with_dash
is a bona fide module object — indistinguishable from one imported using the standard import
statement.
Working around unconventional names
Python naming conventions prefer snake case, but what to do when a hyphen slithers in, or another outlandish character shows up? Here's the game plan:
-
Proxy import — Create a wrapper module with a proper name that imports the poorly-named target module.
-
Filesystem symlinks — If you can't change the module name, you can still con Python into importing it:
-
sys.path trick — Add the module's directory to
sys.path
, and then useimportlib
or__import__
.
Navigating potential import pitfalls
Importing modules with hyphens might lead to syntax errors, and techniques like from module-name import *
won't segway nicely. Here's what to do instead:
- Explicit attribute import: Import each attribute you need, one by one.
- Namespace faffing: For Python 2, use
execfile
. For Python 3, putexec
on the global namespace.
Following Pythonic naming conventions
PEP 8, Python's official style guide, prefers module names to be lowercase, with underscores. So, save yourself from concocting workarounds and write clean and consistent code to start with.
Renaming modules that 'break' rules
Give your module a makeover — flip those hyphens to underscores! This way, you’ll ensure smooth importing and maintain consistency across your codebase.
Feeling the pain of hyphenated imports
Imagine being a book, ready to be read — and then someone changes the language! That's how Python feels with hyphenated modules. Here's how you overcome this issue:
What to do? Bring in a translator 🤔
With importlib
as your savvy interpreter, Python can understand book-in-german
in no time!
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