What does a dot after an integer mean in python?

Question

I am looking at this line of python code (which seems to run properly):

import numpy as np
yl = 300 + 63*np.exp(-x/35.)

What is the dot doi

Answer 1

This is easy to test, and you're right. The dot signals a float.

$ python
>>> 1.
1.0
>>> type(1.)