The find method

The find method returns the index of the first substring match in a string. In the first parameter of the method, we specify the substring we need, in the second and third optional parameters - the index of the beginning and end of the search, respectively. If the substring is not found, the method will return the number -1.

Syntax

pythonstring.find(substring, [search start index], [search end index])

Example

Let's find the substring 'a', specifying the beginning and end to search for:

pythontxt = 'abcadea'
print(txt.find('a', 1, 4))

Result of code execution:

python3

Example

Let's find the substring 'a' by changing the search indices:

pythontxt = 'abcadea'
print(txt.find('a', 1, 3))

Result of code execution:

python-1

Example

Now let's find the substring 'a' without specifying the indexes for its search:

pythontxt = 'abcadea'
print(txt.find('a'))

Result of code execution:

python0

See also