• In python, we have the string concept from that we have a small topic called substring.
• "substring " is the string that is a part of the main string.
• In other words, we can say that extraction of the characters from the string.
• We can access the string by using the index and substring by using the concept of slicing.
• For the creation of the list of substrings, we use the split().
• It follows string[start:end: step] in slicing concept by this the substring is formed.
• start: It is the starting index of the substring. By default, it is 0.
• end: It is the ending index of the Substring. By default, it is the length of the string.
• step: It is used to increment the index by the given numbers.
• We use some of the functions in the substrings.

• In operator: It is used to find the substring that is present in the string.
• Count(): It is used to count the number of times the substring occurred in the string.It is denoted by the "*" symbol.

#Write a python program to find the substring from a string.