ModuleNotFoundError: No module named 'scipy.optimize'; 'scipy' is not a package

[bowlofred]

You probably have a file called "scipy.py" in your PYTHONPATH (such as the current directory). It is overriding the interpreter's search for the actual scipy package.

Rename the file so it doesn't conflict.

Output:
$ python -c 'from scipy.optimize import brentq; print("ok")'
ok
$ touch scipy.py
$ python -c 'from scipy.optimize import brentq; print("ok")'
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ModuleNotFoundError: No module named 'scipy.optimize'; 'scipy' is not a package