In Python, the __debug__ variable poses as a convenient tool across all modules. Aiming to replicate its virtue, a custom variable named foo can be created to achieve similar functionality. However, unlike __debug__, foo need not be truly global, allowing its value to be set even before importing linked modules.
To realize this, a simple global module-level variable does the trick. Here's an example:
# a.py var = 1
# b.py import a print(a.var) import c print(a.var)
# c.py import a a.var = 2
When executed as python b.py, the output reads 1 2, demonstrating the universal visibility of var across modules.
This approach proves useful in scenarios such as Django's global_settings.py, where settings are accessed via the imported object django.conf.settings.
The above is the detailed content of Here are some question-based titles that fit the article: * How to Achieve Cross-Module Variables in Python Without Using a Global Scope? * Replacing Python's '__debug__' with a Custom C. For more information, please follow other related articles on the PHP Chinese website!