Regular Expression. Source: cloudinary.com

• We have learned, how to use correct regular expression in Python with using search() method and match() from re module.
• The concept formulates and utilize character class which suppose have known well. It is also with character class that has been determined before such as \\d, \\D, \\s, \\S and so on.
• We have learned to match beginning and end of string with regular expression. We have to know the special meaning from mark question (?) to create optional item.
• We also learned quantifier to repeat character.
• Next, we have learned the suitable object from re module and the information inside and also gain this information by using span method(), start(), end(), andgroup()

Note:

• We don’t have to memorize all regex expression. It is better to have a cheat sheet of some important and unique character class for instance.