python - Adding lines of a text file to a dictionary -

i've been trying think how this, cant seem anywhere.

if have text file contains host name made corresponding ip address:

the result of www.espn.com 199.181.133.15 result of www.espn.com 199.454.152.10 result of www.espn.com 20.254.215.14 result of www.google.com 141.254.15.14 result of www.google.com 172.14.54.153 result of www.yahoo.com 181.145.254.12 

how address , corresponding ip address in list or dictionary?

so www.google.com like:

("www.google.com", 141.254.15.14, 172.14.54.153) 

the lines above in same format, iterate on file, take above, use split(), , add addresses dictionary.

  .......          ....             dicta = {}             line in f:                 splitline = line.split()                     dicta = {splitline[2]: splitline[3]} 

the key website, , values of corresonpding ip addresses. need them inside list or togethe.

you can make use of defaultdict collections , set default list:

>>> collections import defaultdict >>> s = '''the result of www.espn.com 199.181.133.15 ... result of www.espn.com 199.454.152.10 ... result of www.espn.com 20.254.215.14 ... result of www.google.com 141.254.15.14 ... result of www.google.com 172.14.54.153 ... result of www.yahoo.com 181.145.254.12'''.splitlines() >>> dicta = defaultdict(list) >>> line in s: ...     words = line.split() ...     dicta[words[3]].append(words[-1]) ... >>> dicta defaultdict(<type 'list'>, {'www.yahoo.com': ['181.145.254.12'], 'www.espn.com': ['199.181.133.15', '199.454.152.10', '20.254.215.14'], 'www.google.com': ['141.254.15.14', '172.14.54.153']})  >>> key, val in dicta.items(): ...     print key, val ... www.yahoo.com ['181.145.254.12'] www.espn.com ['199.181.133.15', '199.454.152.10', '20.254.215.14'] www.google.com ['141.254.15.14', '172.14.54.153']