debug_too_many_open_files.py

import __builtin__

openfiles = set()
oldfile = __builtin__.file

class newfile(oldfile):
    def __init__(self, *args):
        self.x = args[0]
        print "\033[01;31m##### %d #### OPENING %s ###\033[00m" % (len(openfiles),str(self.x))
        oldfile.__init__(self, *args)
        openfiles.add(self)

    def close(self):
        print "\033[01;31m##### %d #### CLOSING %s ###\033[00m" % (len(openfiles),str(self.x))
        oldfile.close(self)
        openfiles.remove(self)

oldopen = __builtin__.open
def newopen(*args):
    return newfile(*args)

__builtin__.file = newfile
__builtin__.open = newopen

def printOpenFiles():
    print "\033[01;31m############### %d OPEN FILES: ###############\033[00m" % len(openfiles)