import gzip
import random
import time

def random_line(afile):
    line = next(afile)
    for num, aline in enumerate(afile):
        if random.randrange(num + 2): continue
        line = aline
    return line

start_time = time.time()

with gzip.open("data/pagecounts-20150501-010000.gz") as afile:
    print random_line(afile)

print("\n--- %s seconds ---" % (time.time() - start_time))




===============================================================================================

Resultat : eu Berezi:CentralAuth/Andre_Engels 1 26936


--- 28.2244288921 seconds ---