Pickle performing class instantiation ??
Peter Otten
__peter__ at web.de
Tue Feb 28 11:14:36 EST 2012
Smiley 4321 wrote:
> Am I doing the right thing for -
>
> - Have a class
> - Instantiate the class with 3 parameters
> - pickle the class instance
> - generate a bytestream (.pkl) using pickle.dump, simply guessing -
>
> as -
>
> ---
> #!/usr/bin/python
>
> import pickle
>
> class Pickle:
> def __init__(self, Parameter1, Parameter2, Parameter3):
> self.PM1 = Parameter1
> self.PM2 = Parameter2
> self.PM3 = Parameter3
# You need something to pickle first.
# You could call it "self", but that is confusing
# as this name is by convention used inside methods as
# the current instance. So:
p = Pickle(1, 2, 3)
> with open('/tmp/readfile.pkl', 'wb') as f:
# Don't touch the object's attributes,
# pickle the whole instance instead:
pickle.dump(p, f)
> with open('/tmp/readfile.pkl', 'rb') as f:
# Load the instance back from file
p = pickle.load(f)
# print it
print p.PM1
print p.PM2
print p.PM3
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