Creating Classes Dynamically?
John Mitchell
johnm at magnet.com
Thu Apr 20 13:12:45 EDT 2000
On Thu, 20 Apr 2000, Jerome Chan wrote:
> Is there a way to create an object of a class from a string?
You can save and restore objects using the 'pickle' module:
import pickle
class Struct:
pass
# create new object 'j'
#
j = Struct()
j.name = 'john'
j.title = 'stud'
# package it up
#
x = pickle.dumps(j)
print x
# "x" is a semi-printable representation of object "j":
# => looks something like "(i__main__ Struct p0
# (dp1 S'title' p2 S'stud' p3 sS'name' p4 S'john' p5 sb."
#
z = pickle.loads(x)
# "z" is a new object, loaded from "x", which is a
# copy of our original object. To test it, print out its name.
#
print z.name
# => "john"
Also check out the shelve and binascii modules.
- j
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