hbisect.py: don't rely on __del__ to write the current state. This is yet another page of the "Thou shalt not do too much inside __del__ methods" book, in the "demandload and __del__ don't go well together" chapter. The bisect extension is broken in 0.9.1: $ hg bisect init $ hg bisect bad Fatal Python error: Interpreter not initialized (version mismatch?) Aborted (yes, I tripled checked my instalation to make sure the problem is not there) It's been broken since revision fe1689273f84 moved the import of the binascii module into a demandload. (In details: the first time that "hg bisect bad" (or good) is called, there are still no revisions saved in .hg/bisect/*, so bisect.__init__ doesn't call hg.bin on anything. So, when we reach __del__, the binascii module still hasn't been imported and we get that "nice" message above.)

#! /usr/bin/env python
#
# Based on python's Tools/scripts/md5sum.py
#
# This software may be used and distributed according to the terms
# of the PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2, which is
# GPL-compatible.

import sys
import os
import md5

for filename in sys.argv[1:]:
    try:
        fp = open(filename, 'rb')
    except IOError, msg:
        sys.stderr.write('%s: Can\'t open: %s\n' % (filename, msg))
        sys.exit(1)
    
    m = md5.new()
    try:
        while 1:
            data = fp.read(8192)
            if not data:
                break
            m.update(data)
    except IOError, msg:
        sys.stderr.write('%s: I/O error: %s\n' % (filename, msg))
        sys.exit(1)
    sys.stdout.write('%s  %s\n' % (m.hexdigest(), filename))

sys.exit(0)