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Python 201 - Interactively Learn Advanced Concepts in Python 3

Import Pitfalls

Understand the common import pitfalls in Python such as circular imports and shadowed imports that lead to errors. Learn to identify these problems through examples and explore strategies like code refactoring to avoid them, enhancing your module management skills.

We'll cover the following...

Common import pitfalls

There are some very common import pitfalls that programmers fall into. We’ll go over the two most common here:

  • Circular imports
  • Shadowed imports

Let’s start by looking at circular imports.

Circular imports

Circular imports happen when we create two modules that import each other. Let’s look at an example as that will make it quite clear what we are referring to. Put the following code into a module called a.py.

Python 3.5
# a.py
import b
def a_test():
    print("in a_test")
    b.b_test()
a_test()
...