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learn about pickle #8

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25 changes: 23 additions & 2 deletions counter.py
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Original file line number Diff line number Diff line change
@@ -1,7 +1,10 @@
""" A program that stores and updates a counter using a Python pickle file"""

from os.path import exists
import os
import sys
import pickle

from os.path import exists
from pickle import dump, load


Expand Down Expand Up @@ -30,7 +33,25 @@ def update_counter(file_name, reset=False):
>>> update_counter('blah2.txt')
2
"""
pass
if (not os.path.exists(file_name)) or reset:
new = open(file_name, 'wb')
pickle.dump(1, new)
new.close()
return 1

else:
checkfile = open(file_name, 'rb')
value = pickle.load(checkfile)
checkfile.close()
value = value + 1
returnfile = open(file_name, 'wb')
pickle.dump(value, returnfile)
returnfile.close()
return value

update_counter('blah2.txt')



if __name__ == '__main__':
if len(sys.argv) < 2:
Expand Down