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#!/usr/bin/env python

# coding=utf-8

class ContextManagerOpenDemo(object):

def __init__(self, filename, mode):

self.filename = filename

self.mode = mode

def __enter__(self):

print("Starting the Manager.")

self.open_file = open(self.filename, self.mode)

return self.open_file

def __exit__(self, *others):

self.open_file.close()

print("Exiting the Manager.")

#def __exit__(self, exc_type, exc_value, exc_traceback):

#return SyntaxError != exc_type

#return False

with ContextManagerOpenDemo("23501.txt", 'r') as reader:

#with ContextManagerOpenDemo():

print("In the Manager.")

for line in reader:

print(line)