what does .update do in python code example

Example 1: how to update python

The explanation would be too long for a grepper answer.
So here is a link to a stackoverflow question:

https://stackoverflow.com/questions/45137395/how-do-i-upgrade-the-python-installation-in-windows-10

Example 2: .update python

z = {1: 'One', 2: 'Two'}
x = {0: 'zero', 1: 'one'}
x.update(z) # adds anything new to the dict
print(x)
{0: 'zero', 1: 'One', 2: 'Two'}