# How to check if a string starts with a substring using regex in Python 
# import library
import re
  
# define a function 
def find(string, sample) :
    
  # check substring present 
  # in a string or not
  if (sample in string):
  
      y = "^" + sample
  
      # check if string starts 
      # with the substring
      x = re.search(y, string)
  
      if x :
          print("string starts with the given substring")
  
      else :
          print("string doesn't start with the given substring")
  
  else :
      print("entered string isn't a substring")
  
  
# Driver code
string = "geeks for geeks makes learning fun"  
sample = "geeks"
  
# function call
find(string, sample)
  
sample = "makes"
  
# function call
find(string, sample)