Python Regular Expressions (RegEx) | Regular Expressions In Python | Python Tutorial | Simplilearn

Publicado em: 02 Janeiro 2019
no canal de: Simplilearn

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This Python regular expressions tutorial will help you understand what are regular expressions and symbols for writing regular expressions along with a demo on how to use these. Regular expressions are a set of characters that helps one identity strings of a specific pattern. The history of regular expressions came from a number of other languages. Now, let us get started and understand how to use the regular expressions along with a demo.

Below topics are explained in this Python regular expressions tutorial:
1. What are regular expressions? (00:15)
2. Symbols for writing regular expressions (01:41)
$: Specifies that the match must occur at the end of the string
[]: Matches one out all characters within the brackets
[^..]: Matches anyone characters except those not in the brackets
.: Represent ss single occurrence of any character except newline
?: The preceding character is optional
^: Specifies that the match must start at the beginning of the string

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