How to import a module from directory

Question

I'm new to Python so I'm having trouble importing a module found here:

pythonProject1/cs1133/lab15/timer.py

I want to write

>>> from timer import Time

into the interactive terminal, but I get the following answer:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'timer'

How do I fix this?