how to use count method in python code example

Example 1: string count substring occurences pytohn

string.count(substring, [start_index], [end_index])

Example 2: count in python

it counts the number of elements in the list or in the string(words)

Example 3: what is the use of count function in python

count = 0 
while count < 10 :
  print("Hello")
  count += 1