[2013-06-28] python tell

Maybe you think that both examples would produce the same output, but the tell of the filehandler will give you a wrong output in the first version. This version is a bit faster but in this case also a bit inaccurate.

infh = open("bigfile")
print infh.tell()
for line in infh:
    # ...
    print infh.tell()
    line = infh.readline()

infh = open("bigfile")
print infh.tell()
line = infh.readline()         
while len(line) > 0:
    # ...
    print infh.tell()
    line = infh.readline()
programming
python
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