"""Generic object pickler and compressor
This module saves and reloads compressed representations of generic Python
objects to and from the disk.
"""
__author__ = "Bill McNeill <billmcn@speakeasy.net>"
__version__ = "1.0"
import pickle
import gzip
def save(object, filename, bin = 1):
"""Saves a compressed object to disk
"""
file = gzip.GzipFile(filename, 'wb')
file.write(pickle.dumps(object, bin))
file.close()
def load(filename):
"""Loads a compressed object from disk
"""
file = gzip.GzipFile(filename, 'rb')
buffer = ""
while 1:
data = file.read()
if data == "":
break
buffer += data
object = pickle.loads(buffer)
file.close()
return object
if __name__ == "__main__":
import sys
import os.path
class Object:
x = 7
y = "This is an object."
filename = sys.argv[1]
if os.path.isfile(filename):
o = load(filename)
print "Loaded %s" % o
else:
o = Object()
save(o, filename)
print "Saved %s" % o
