digitalfredy log

#!/usr/bin/python

# Pickle: https://docs.python.org/2/library/pickle.html
# Pickle examples: https://wiki.python.org/moin/UsingPickle
import pickle
# Data pretty printer https://docs.python.org/2/library/pprint.html
import pprint

filename = "inventory.bin"

print "Assignment07 by Fredy Pulido-Lopez"
# Based on Assignement04 I did using try except 

print  "Importig and printing data from ",filename
# Exception handler to take care if the file is not present
try:
  with open (filename,'rb') as file:
      dictionary = pickle.load(file)
      pprint.pprint(dictionary)
except IOError:
  print "ERROR: Failed loading (IOError) ",filename,", starting from scratch"
  # No file loaded then i'm creating my dictionary here
  dictionary = []

print "############## Inventory composer ##############"

print "WARNING: Ctl+c will write ",filename," file."
# Exception handler, close and save when Ctl+c send a KeyboardInterrupt signal
try:
    # Infinite loop to feed the inventory in memory:
    while True:
        item = raw_input("Item   : "),
        value = raw_input("Value  : "),
        dictionary.append({'item': item, 'value': value})
except KeyboardInterrupt:
    print "\nWriting inventory in ",filename

# After the exception the loop is done and we have a feeded dictionary in memory
# Now we will save our dictionary in a file called inventory.txt 
with open (filename,'w') as file:
    pickle.dump(dictionary,file,-1)