Lesson 14 Regular expressions

1 minutes
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Regular expressions. In computer science a regular expression, known as rejects or rejects p provides a concise and flexible means for matching text strings, such as special characters, words or character patterns. A regular expression is written in a formal language that can be interpreted by a regular expression processor. These are very intelligent job expressions for searching and parsing text strings. Use our e dot search. As you were using the find method.

You can see how searching with line dot finds locks in compared with our e dot search. Do you need to import the E library for this? Use our e dot search like you would use starts with Joker characters. The point corresponds to any character. If you add the asterisk symbol, it will be repeated any number of times depending on the day Greet of cleanliness of your data and the purpose of your request, you can slightly shorten your search. When we use the dot find all returns a list of zero or more secondary strings that match the regular expression.

In this example, we print the numbers that can be found under sentence. When we try to print the vowels that are capital letters, the outcome is no, since the only capital is and parentheses are not part of the search, but they specify where the string to be extracted begins and ends. Here's an example of obtaining the email address promised during the represents an email received. Then we obtain some information regarding the email. What is the index of the Add sign, which place in the string, then, where's the first base and print the webmail host?

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