whats len in python code example

Example 1: python if and

if foo == 'abc' and bar == 'bac' or zoo == '123':
  # do something

Example 2: len python

mystring = 'Hello'
#Counts the amount of letters in the string
len(mystring)	# = 5	

#Can also count the number of items in a list
mylist = ['Hello', 'Goodbye', 'Morning']
len(mylist)		# = 3