Introduction
The find() function in Python is used to check if a substring is in a string according to the start and end values you set. This function is almost the same as the index() function.
If present, the function will print the lowest index of that substring. Otherwise, it will return -1.
And the article below, we will show you how to use the find() function in Python through several examples as go through below.
Example
str = "Welcome to Python"
x = str.find("to")
print(x)
Output:
8
Definition
The find() function finds the lowest position of the substring.
If not found, it will return -1.
The syntax
$ string.find(value, start, end)
Parameter Values:
value: substring that you need to find
start: starting value. Default is 0
end: ending value. Default is the end of the string
More examples
Example 1: Find the word “e”
str = "Welcome to Python"
x = str.find("l")
print(x)
Output:
1
Example 2: Find the word “e” from position 3 to position 10
str = "Welcome to Python"
x = str.find("e", 3, 10)
print(x)
Output:
6
Example 3: try to find a substring that does not appear
str = "Welcome to Python"
x = str.find("a")
print(x)
Output:
-1
Conclusion
Hope you understand our tutorial on how to use the find() function in Python.
Thanks for reading!
Karim Buzdar holds a degree in telecommunication engineering and holds several sysadmin certifications including CCNA RS, SCP, and ACE. As an IT engineer and technical author, he writes for various websites.
