startswith() : check if string is started with the given string or not in Python

main_string.startswith(search_string, start, end)

Returns True if the main string starts with specified search string, otherwise returns False

search_string

Required, String to be searched to check to match starting of the main string.

start

Optional, Starting position of search , by default it is from 0 or starting position of string

end

Optional , ending position of search, by default it is end of the string.

This is case sensitive search.

my_str='Welcome to plus2net.com Python section'
output=my_str.startswith('Wel') 
print(output) # output is True
my_str='Welcome to plus2net.com Python section'
output=my_str.startswith('co',3)
print(output) # output is True

my_str='Welcome to plus2net.com Python section'
output=my_str.startswith('co',20,24)
print(output) # output is True

Output is here

True
True
True

Example 1: Basic Usage of startswith()

my_str = "Welcome to plus2net"
print(my_str.startswith("Welcome"))  # Output: True

Example 2: Using start Parameter

Check if substring exists starting from a specific index.

my_str = "Python programming"
print(my_str.startswith("pro", 7))   # Output: True

Example 3: Using start and end Parameters

Using both start and end to limit the search range.

text = "Data Science and Machine Learning"
print(text.startswith("Science", 5, 15))  # Output: True

Applications of startswith()

Data Parsing: Filter text data that starts with specific characters or keywords.
URL Validation: Check if a URL starts with "http" or "https".
File Format Verification: Identify specific file types or prefixes.

All String methods

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startswith(): Check string begins with a specified substring

Example 1: Basic Usage of startswith()

Example 2: Using start Parameter

Example 3: Using start and end Parameters

Applications of startswith()

Subhendu Mohapatra