How would I get everything before a : in a string Python

Question

I am looking for a way to get all of the letters in a string before a : but I have no idea on where to start. Would I use regex? If so how?

string = \"Userna         


        

Answer 1

Using index:

>>> string = "Username: How are you today?"
>>> string[:string.index(":")]
'Username'

The index will give you the position of : in string, then you can slice it.

If you want to use regex:

>>> import re
>>> re.match("(.*?):",string).group()
'Username'                       

match matches from the start of the string.

you can also use itertools.takewhile

>>> import itertools
>>> "".join(itertools.takewhile(lambda x: x!=":", string))
'Username'