find()

The find() method in Python is a string method that returns the lowest index within the string where a specified substring is found. If the substring is not found, it returns -1. It takes the substring to search for as its argument and can also take optional parameters for the start and end position to limit the search within a specific range of the string.

Parameter Values

Parameter Description
sub

The sub parameter specifies the substring you want to find in the given string.
start

The start parameter is optional and specifies the start index within the string where the search will begin.
end

The end parameter is optional and specifies the end index within the string where the search will end.

Return Values

The find() method returns an int indicating the index or -1 if not found.

How to Use find() in Python

Example 1:

The find() method returns the index of the first occurrence of a specified value in a string. If the value is not found, it returns -1.

text = 'Hello, World!' 
index = text.find('World')
print(index) # Output: 7
Example 2:

The find() method can also take optional parameters for start and end indexes to search within a specific range of the string.

text = 'Python is awesome!' 
index = text.find('is', 5, 15)
print(index) # Output: 7
Example 3:

If the value is not found within the specified range, the method returns -1.

text = 'Python is awesome!' 
index = text.find('is', 12, 15)
print(index) # Output: -1

String Methods