How to read lines from a mmapped file?

Question

Is seems that the mmap interface only supports readline(). If I try to iterate over the object I get character instead of complete lines.

What would be the \"python

Answer 1

Python 2.7 32bit on Windows is more than twice as fast on an mmapped file:

On a 27MB, 509k line text file (my 'parse' function is not interesting it mostly just readline()'s very rapidly):

with open(someFile,"r") as f:
    if usemmap:
        m=mmap.mmap(f.fileno(), 0, access=mmap.ACCESS_READ)
    else:
        m=f
        e.parse(m)

With MMAP:

read in 0.308000087738

Without MMAP:

read in 0.680999994278