CODEWITHSUNDEEP
pythonpython-3.x
supersaiyajin87
supersaiyajin87

Reputation: 153

String regex for a particular format in Python

I have strings in the following format name1 <[email protected]>. How can I use regex to pull only the name1 part out? Also, how might I be able to do this if I had multiple such names and emails, say name1 <[email protected]>, name2 <[email protected]>?

Upvotes: 1

Views: 75

Answers (3)

nahar
nahar

Reputation: 41

import re

name = re.search(r'(?<! <)\w+', 'name1 <[email protected]>')

print(name.group(0))

>>> name1

Explanation:

(?<!...) is called a negative lookbehind assertion. I added ' <' into the ... as you are looking for the string that precedes the '<' of the email.

re.search(r'(?<!...), string_to_search)

https://docs.python.org/3/library/re.html

Edit/Forgot:

To search strings with multiple:

import re

regex = r"\w+([?<! <])"

multi_name = "name1 <[email protected]>, name2 <[email protected]>"
    
matches = re.finditer(regex, multi_name, re.MULTILINE)
    
for group, match in enumerate(matches, start=1):
    print(f"Match: {match.group()}")

>>> name1
>>> name2

Upvotes: 2

DeepSpace
DeepSpace

Reputation: 81594

You can start with (\w+)\s<.*?>(?:,\s)? (see on regex101.com), which relies on the fact that emails are surrounded by < >, and customize it as you see fit.

Note that this regex does not specifically look for emails, just for text surrounded by < >.

Don't fall down the rabbit hole of trying to specifically match emails.

import re

regex = re.compile(r'(\w+)\s<.*?>(?:,\s)?')
string = 'name1 <[email protected]>, name2 <[email protected]>'

print([match for match in regex.findall(string)])

outputs

['name1', 'name2']

Upvotes: 2

Mayank Porwal
Mayank Porwal

Reputation: 34046

Try using split:

In [164]: s = 'name1 <[email protected]>, name2 <[email protected]>'
In [166]: [i.split()[0] for i in s.split(',')]
Out[166]: ['name1', 'name2']

If you have just one name:

In [161]: s = 'name1 <[email protected]>'
In [163]: s.split()[0]
Out[163]: 'name1'

Upvotes: 3

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