ImportError: cannot import name 'MyClass' from 'mymodule'

Usually caused by circular imports — module A imports from B, and B imports from A.

Fix 1: Move the import inside the function

# ❌ Top-level circular import
from module_b import helper

# ✅ Import where you need it
def my_function():
    from module_b import helper
    return helper()

Fix 2: Restructure your code

Move shared code into a third module that both can import from:

# ❌ a.py imports from b.py, b.py imports from a.py
# ✅ Move shared code to common.py

Fix 3: Check for typos

# ❌ Name doesn't exist in that module
from utils import proccess_data

# ✅ Correct spelling
from utils import process_data

Related resources

• Python cheat sheet
• Python complete guide