How to extract company name from emails using find() method in python?

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I'm still very new to Python. I'm working on my assignment but I still do not understand how the find() method work when extracting emails. The purpose of the function is to extract the company of the email (i.e., everything after the @ sign but before the .) using the find() method.

Example Usage:

extract_company("larhe@uber.com") should return "uber"

So I understand that find(subtr, start, end). And I know how it should work, but in only one condition. However, this asked to find the company name in between @ and .

This is the code I have been working so far but it still gives me an assertionerror

def extract_company(email):
    return email.find('@' and '.') 

find() method find for the particular string etc. What you are looking for is the word after @ and before .com, so you can use regex for that. However there is another geeky method using split to do that

def extract_company(email):
    return email.split('@')[-1].split('.')[0]

What this code will be doing, it will be splitting the email address at '@' and then taking the last item and splitting it a '.' and then taking the first list item, which will be your company name.

If you intend to use regex. Then the code will be :-

import re
def extract_company(email):
    x= re.findall(r"\@(.*?)\.", "uditvashisht@gmail.com")
    return x[0]

What it does is it looks for all the characters between '@' and '.' and then returns the list of that characters. And the element in that list is the company name.

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def extract_company(email):
    index_of_at = email.find('@')

    return email[index_of_at+1:email.rfind('.')]

Assuming you're required to use base Python, this is one way.

  1. Store the index where the first '@' is found.
  2. slice the string such that you start at the letter after '@' (i.e. index_of_at + 1) and the last '.'(i.e. email.rfind('.')).

Extracting email addresses using regular expressions in Python, articles, quizzes and practice/competitive programming/company interview Questions. Extracting email addresses using regular expressions in Python Let take an example in which we have to find out only email from the given input by Regular Expression. find all function to select all digit from 0. Extracting email addresses using regular expressions in Python Last Updated: 28-01-2018 Let suppose a situation in which you have to read some specific data like phone numbers, email addresses, dates, a collection of words etc.

You can use the inbuilt re library to extract the company name from the email.

Example:

import re
email = "lahre@uber.com"
print(re.findall(r'\w+[.]', email)[0][:-1])

Output:

uber

Extracting email addresses using regular expressions in Python , For feature engineering you may want to extract a domain name out of an The aim of this function is to pass through an email address, like´┐Ż Extracting email addresses using regular expressions in Python Python Programming Server Side Programming Email addresses are pretty complex and do not have a standard being followed all over the world which makes it difficult to identify an email in a regex.

Extract the domain name from an email address in Python, data cleansing from a file before processing the other business operations. Python program to extract emails and domain names from the String By txt = “ Ryan has sent an invoice email to john.d@yahoo.com by using his #find the domain name from the email address and set into domain variable. This tutorial shows you on how to extract the domain name from an email address by using PHP, Java, VB .NET, C# and Python programming language. The below sample code is useful when you need to extract the domain name to be supplied into FraudLabs Pro REST API (for email_domain field). You may visit the screen order API page to learn more.

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The find() method finds the first occurrence of the specified value. The find() method returns -1 if the value is not found. The find() method is almost the same as the index() method, the only difference is that the index() method raises an exception if the value is not found. (See example below)

Comments
  • Hello! Thank you for showing me split(). One of the thing in this assignment is we can't import regex. Also, I think she wanted us to use the find() method. I was wondering if we can use find().find() in this case?
  • I think then another answer by @zero will solve your purpose.
  • Okay! I think I finally got the right answer. Thank you so much. I didn't really think of storing the index into email[email.find()]. I was just using email.find() and it was difficult to understand how to get from @ to .
  • Hello, can you explain more on the range [0] [:-1]?
  • The re.findall method returns a list of values. The [0] indicates the first vallue of the list. The company name in the list contains . as the last character. [:-1] is to extract the company name without ..