regular expressions beautified

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Text Processing

Lets say our objective is to find some patterns in textual data. Then it becomes really important for us to understand how python stores and search for text inside the strings.

Just for the reference I'm including useful patterns on top of the file.

Codepython

import re # regular expressions

Codepython

text1 = "This is a sample email sent by ashishchaudhary62@gmail.com"
text1

Output

'This is a sample email sent by ashishchaudhary62@gmail.com'

Lets say our objective is to extract just the email from the string

text1 = """This is a group email conversation in a company ashishchaudhary62@gmail.com: Hey, how are you all? I just joined. I hope to learn new things under guidance of you seniors. somerandomemail@gmail.com: Who are you? Don't text at late hours. Be professional, if you've nothing to offer, then don't unnecessarily text. tickles62@gmail.com: Chill somerandomemail, he is a new joinee, don't pull his legs. Hi. Ashish. Welcome to Tickles private. We are happy to have you as our partner. ashishchaudhary62@gmail.com: Hello sir. So sorry I didn't know you were the founder. I thought, this was just the employee group. somerandomemail@gmail.com: Don't assume Tickles sir will reply to your messages junior. tickles62@gmail.com: somerandomemail I didn't mean to reply, but now you've forced me to *facepalm somerandomemail@gmail.com: ashish, this place is like our family. You don't have to be so uptight. See the reaction of sir, he's so fed up of us. Maybe that's why we needed new people. ashishchaudhary62@gmail.com: Wow, I don't know if this is a sarcastic conversation or an honest one. But this place is fun. Thank you all """ print(text1)

This is a group email conversation in a company ashishchaudhary62@gmail.com: Hey, how are you all? I just joined. I hope to learn new things under guidance of you seniors. somerandomemail@gmail.com: Who are you? Don't text at late hours. Be professional, if you've nothing to offer, then don't unnecessarily text. tickles62@gmail.com: Chill somerandomemail, he is a new joinee, don't pull his legs. Hi. Ashish. Welcome to Tickles private. We are happy to have you as our partner. ashishchaudhary62@gmail.com: Hello sir. So sorry I didn't know you were the founder. I thought, this was just the employee group. somerandomemail@gmail.com: Don't assume Tickles sir will reply to your messages junior. tickles62@gmail.com: somerandomemail I didn't mean to reply, but now you've forced me to *facepalm somerandomemail@gmail.com: ashish, this place is like our family. You don't have to be so uptight. See the reaction of sir, he's so fed up of us. Maybe that's why we needed new people. ashishchaudhary62@gmail.com: Wow, I don't know if this is a sarcastic conversation or an honest one. But this place is fun. Thank you all

CookieSensei

regular expressions beautified

Text Processing

re.findall("pattern", string)

Lets try different patterns now

Join method

string split method

dollar character:

Objective

set() function

Greedy matching

HTML tags

re.sub()

re.search()

Sample Patterns

Lesson resources

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