python: multiline regular expression

Question

I have a piece of text and I\'ve got to parse usernames and hashes out of it. Right now I\'m doing it with two regular expressions. Could I do it with just one multiline regular

Answer 1

Try this:

re.findall(r'Hello, (?P<login>[^.]+)\..+?hash: (?P<hash>[^.]+)', test_str, re.S)

Answer 2

name_hash_pair = re.findall('Hello, ([^.]+).*?hash: ([^.]+)', test_str, re.DOTALL)
#gives [('UserName', 'fdaf9399jef9qw0j'), ('UserName2', 'gtwnhton340gjr2g')]

Answer 3

A simple pyparsing version:

from pyparsing import *

username = Word(alphas,alphanums+"_")
hash = Word(alphanums)

patt = ("Hello," + username("username") + '.' + 
        SkipTo("write down this hash:", include=True) + 
        hash("hash"))

for tokens,start,end in patt.scanString(test_str):
    print tokens.hash, '->', tokens.username

# or to build a dict
hashNameLookup = dict((t.hash, t.username) 
                                for t,s,e in patt.scanString(test_str))

Prints:

fdaf9399jef9qw0j -> UserName
gtwnhton340gjr2g -> UserName2