Python String startswith() Method

Python startswith() method returns True if the string starts with the specified prefix, otherwise False. Two parameters start, and the end is needed. The start is a starting index from which the index begins, and the end index is where searching stops.

The syntax of the method is: str.startswith(str, beg = 0,end = len(string));

Key Points :

• The function startwith() returns true if the string begins with the prefix we are searching for, and if it has no prefix, it returns false in this situation.
• This function’s parameter prefix is case-sensitive, indicating that Computer and computer are two distinct values.

startswith() Parameters

startswith() method takes a maximum of three parameters:

• Prefix:  This parameter is used to describe the prefix substring.
• start (optional): This is an optional parameter to set the matching boundary starting index.
• end (optional): It is also an optional parameter used to set the matching boundary’s ending index.

Return Value from startswith()

startswith() method returns a boolean.

• Returns True if the string begins with the prefix defined.
• Returns False if the string does not begin with the prefix defined.

Below is the python program to demonstrate the startswith() function:

str = "The Best Learning Resource for Online Education";
print (str.startswith( 'The' ))
print (str.startswith( 'for', 2, 40 ))
print (str.startswith( 'the', 2, 50 ))

When we run above the program, the outcome is as follows:

True
False
False

startswith() With Tuple Prefix

str = "We Love Python Programming"
output = str.startswith(('We', 'Programming'))
print(output)
output = str.startswith(('Python', 'Programming'), 8, 25)
print(output) 

When we run above the program, the outcome is as follows:

True
True

Below are several other functions that we can use to work with string in Python 3