Python | Remove the given substring from end of string

text = 'GeeksforGeeksWorld'
sub = "World"
# find len of suffix
le = len(sub)
# slice out from string
text = text[:-le]
print(text)

# Initialising string
ini_string = 'xbzefdgstb'
# initializing string
sstring = 'stb'
# printing initial string and substring
print ("initial_strings : ", ini_string, "\nsubstring : ", sstring)
# removing substring from end
# of string using Naive Method
if ini_string.endswith(sstring):
    res = ini_string[:-(len(sstring))]
# printing result
print ("resultant string", res)

import re
# Initialising string
ini_string = 'xbzefdgstb'
# initializing string
sstring = 'stb'
# printing initial string and substring
print ("initial_strings : ", ini_string, "\nsubstring : ", sstring)
# removing substring from end
# of string using sub Method
if ini_string.endswith(sstring):
    res = re.sub(sstring, '', ini_string)
# printing result
print ("resultant string", res)

# Initialising string
ini_string = 'xbzefdgstb'
# initializing string
sstring = 'stb'
# printing initial string and substring
print ("initial_strings : ", ini_string, "\nsubstring : ", sstring)
# removing substring from end
# of string using replace Method
if ini_string.endswith(sstring):
    res = ini_string.replace(sstring, '')
# printing result
print ("resultant string", res)

text = 'GeeksforGeeksWorld'
sub = "World"
# find the index of the substring
index = text.rfind(sub)
# slice out from the string
text = text[:index]
print(text)
#This code is contributed by Edula Vinay Kumar Reddy