leer fichero de texto con columnas como diccionario python

1d = {}
2with open("file.txt") as f:
3    for line in f:
4       (key, val) = line.split()
5       d[int(key)] = val
6

1def get_pair(line):
2    key, sep, value = line.strip().partition(" ")
3    return int(key), value
4
5with open("file.txt") as fd:    
6    d = dict(get_pair(line) for line in fd)
7