Finding substrings in python

to find substrings in python, you can use the `find()` method or the `index()` method for strings. these methods return the index of the first occurrence of the substring within the string, or -1 if the substring is not found.

here is an informative tutorial with a code example:

### using the `find()` method:

### using the `index()` method:

in both examples, we are searching for the substring "world" within the main string "hello, world!". if the substring is found, the index of its first occurrence is printed. otherwise, a message indicating that the substring was not found is displayed.

you can also use slicing to extract substrings from a string based on indices. for example, to extract the substring "world" from the main string "hello, world!", you can do the following:

by using these methods and techniques, you can effectively find substrings in python strings.

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