All String methods
search_string : String to be checked inside the main string.
start: Optional , search to start from this position
end : Optional , serch to end from this position.

Check if the search string is within our main string, if found then the position of matching string is returned. If not found then -1 is returned.
my_str="Welcome to"
print(my_str.find('co'))      # Output is 3
print(my_str.find('co',4))    # Output is 20 
print(my_str.find('co',4,18)) # Output is -1

Case sensitive

find() is a case sensitive search
my_str="Welcome to"
print(my_str.find('CO'))      # Output is -1

index() and find()

We can use index() method also to search and find the position but find() method returns -1 if not found but index() method raise an exception if not found.

All String methods

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