Some typos in the following lines. In addition, I would use hyphens as bullets to structure better the text:

```python
# - Base class is Mock although is advisable to use MagicMock subclass
#     - MagicMock has all "magic" methods already pre-created
# - patch utility allows monkey patching at module and class level within the 
#     scope of test
# - let's see a quick example!
#===============================================================================
 
```