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[BUG] NameError on self-referential class type annotations in matrix_exponentiation.py #15075
Description
Repository commit
Python version (python --version)
Python 3.11.7
Dependencies version (pip freeze)
N/A (Standard library only)
Expected behavior
Importing Python.maths.matrix_exponentiation should complete without error, allowing the Matrix class and type hints to be parsed cleanly:
import Python.maths.matrix_exponentiation
### Actual behavior
---
### **Actual behavior** *
```markdown
Importing `Python.maths.matrix_exponentiation` fails during module evaluation with a `NameError`:
```text
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "Python/maths/matrix_exponentiation.py", line 13, in <module>
class Matrix:
File "Python/maths/matrix_exponentiation.py", line 22, in Matrix
def __mul__(self, b: Matrix) -> Matrix:
^^^^^^
NameError: name 'Matrix' is not defined
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