|
|
# encoding: utf-8
|
|
|
|
|
|
"""Utilities to enable code objects to be pickled.
|
|
|
|
|
|
Any process that import this module will be able to pickle code objects. This
|
|
|
includes the func_code attribute of any function. Once unpickled, new
|
|
|
functions can be built using new.function(code, globals()). Eventually
|
|
|
we need to automate all of this so that functions themselves can be pickled.
|
|
|
|
|
|
Reference: A. Tremols, P Cogolo, "Python Cookbook," p 302-305
|
|
|
"""
|
|
|
|
|
|
__docformat__ = "restructuredtext en"
|
|
|
|
|
|
#-------------------------------------------------------------------------------
|
|
|
# Copyright (C) 2008 The IPython Development Team
|
|
|
#
|
|
|
# Distributed under the terms of the BSD License. The full license is in
|
|
|
# the file COPYING, distributed as part of this software.
|
|
|
#-------------------------------------------------------------------------------
|
|
|
|
|
|
#-------------------------------------------------------------------------------
|
|
|
# Imports
|
|
|
#-------------------------------------------------------------------------------
|
|
|
|
|
|
import sys
|
|
|
import types, copy_reg
|
|
|
|
|
|
def code_ctor(*args):
|
|
|
return types.CodeType(*args)
|
|
|
|
|
|
def reduce_code(co):
|
|
|
if co.co_freevars or co.co_cellvars:
|
|
|
raise ValueError("Sorry, cannot pickle code objects with closures")
|
|
|
args = [co.co_argcount, co.co_nlocals, co.co_stacksize,
|
|
|
co.co_flags, co.co_code, co.co_consts, co.co_names,
|
|
|
co.co_varnames, co.co_filename, co.co_name, co.co_firstlineno,
|
|
|
co.co_lnotab]
|
|
|
if sys.version_info[0] >= 3:
|
|
|
args.insert(1, co.co_kwonlyargcount)
|
|
|
return code_ctor, tuple(args)
|
|
|
|
|
|
copy_reg.pickle(types.CodeType, reduce_code)
|
