[Python-Dev] Use for enumerate() (original) (raw)

Raymond Hettinger python@rcn.com
Sat, 27 Apr 2002 12:52:08 -0400

> > Challenge 3: do it faster and with less code. it should work even if the file is too large to fit in memory (as long as each individual line fits in memory).

def getline(filename, lineno): # Second attempt if lineno < 1: return '' f = open(filename) reduce(lambda x,y: f.readline(), xrange(lineno-1), None) return (f.readline(), f.close())[0]

Arghh, must resist lambda. Must not use reduce. Must avoid tuple tricks. ... GvR's code is too powerful I can't resist

Raymond Hettinger