Python String startswith() method

Python String startswith() method

The string.startswith() method in Python returns a boolean value ‘True’ if the given string starts with the prefix, otherwise it returns False.

Syntax

startswith(prefix[, start[, end]])

Parameter

prefix: This parameter signifies the value to check.

start(optional): This parameter represents an Integer specifying at which position to start the search.

end(optional): This parameter an Integer specifying at which position to end the search.

Return

This method returns a boolean value ‘True’ if the given string starts with the prefix, otherwise it returns False.

Example 1

 # Python program explaining
 # the string.startswith() method
 string = "Python is a simple programming language."
 # substring with ‘is a simple’
 result = string.startswith('is a simple')
 # returns False
 print(result)
 # substring with ‘Python is’
 result = string.startswith('Python is ')
 # returns True
 print(result)
 result = string.startswith('Python is a simple programming language.')
 # returns True
 print(result) 

Output

 False
 True
 True 

Example 2

 # Python program explaining
 # the string.startswith() method
 # initializing the string
 string = "Hello World! Nice to meet you..";
 # will return false as the string does not starts with 'world'
 print(string.startswith( "World"))
 # will return true as the substring 'lo Wor' lies between 2 to 14 
 print(string.startswith( "lo Wor", 3, 14 ))
 # will return false as the substring 'lo Wor' does not startwith 11 to 28
 print(string.startswith( "Nice", 2, 4 )) 

Output

 False
 True
 False