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Support python 3.11, fix bug in CodeType arg order #110

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Support python 3.11, fix bug in CodeType arg order #110

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50 changes: 19 additions & 31 deletions misc.py
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Original file line number Diff line number Diff line change
Expand Up @@ -136,41 +136,29 @@ def change_function( function, **kwds ):

will change the func's co_filename to the specified string.

The types.CodeType constructor differs between Python 2 and 3; see
type help(types.CodeType) at the interpreter prompt for information:
The types.CodeType constructor differs between Python versions; see
type help(types.CodeType) at the interpreter prompt for information.

Python2:
code(argcount, nlocals, stacksize, flags, codestring,
| constants, names, varnames, filename, name, firstlineno,
| lnotab[, freevars[, cellvars]])
"""

Python3:
code(argcount, kwonlyargcount, nlocals, stacksize, flags, codestring,
| constants, names, varnames, filename, name, firstlineno,
| lnotab[, freevars[, cellvars]])
version_lookup = {
(2, 7): ["co_argcount", "co_nlocals", "co_stacksize", "co_flags", "co_code", "co_consts", "co_names", "co_varnames", "co_filename", "co_name", "co_firstlineno", "co_lnotab", "co_freevars", "co_cellvars"],
(3, 7): ["co_argcount", "co_kwonlyargcount", "co_nlocals", "co_stacksize", "co_flags", "co_code", "co_consts", "co_names", "co_varnames", "co_filename", "co_name", "co_firstlineno", "co_lnotab", "co_freevars", "co_cellvars"],
(3, 8): ["co_argcount", "co_posonlyargcount", "co_kwonlyargcount", "co_nlocals", "co_stacksize", "co_flags", "co_code", "co_consts", "co_names", "co_varnames", "co_filename", "co_name", "co_firstlineno", "co_lnotab", "co_freevars", "co_cellvars"],
(3, 9): ["co_argcount", "co_posonlyargcount", "co_kwonlyargcount", "co_nlocals", "co_stacksize", "co_flags", "co_code", "co_consts", "co_names", "co_varnames", "co_filename", "co_name", "co_firstlineno", "co_lnotab", "co_freevars", "co_cellvars"],
(3, 10): ["co_argcount", "co_posonlyargcount", "co_kwonlyargcount", "co_nlocals", "co_stacksize", "co_flags", "co_code", "co_consts", "co_names", "co_varnames", "co_filename", "co_name", "co_firstlineno", "co_linetable", "co_freevars", "co_cellvars"],
(3, 11): ["co_argcount", "co_posonlyargcount", "co_kwonlyargcount", "co_nlocals", "co_stacksize", "co_flags", "co_code", "co_consts", "co_names", "co_varnames", "co_filename", "co_name", "co_qualname", "co_firstlineno", "co_linetable", "co_exceptiontable", "co_freevars", "co_cellvars"]
}

version, minor = sys.version_info[0], sys.version_info[1]

"""
# Enumerate all the __code__ attributes in the same order; types.CodeTypes
# doesn't accept keyword args, only position.
attrs = [ "co_argcount" ]
if sys.version_info[0] >= 3:
attrs += [ "co_kwonlyargcount" ]
if sys.version_info[1] >= 8:
attrs += [ "co_posonlyargcount" ]
attrs += [ "co_nlocals",
"co_stacksize",
"co_flags",
"co_code",
"co_consts",
"co_names",
"co_varnames",
"co_filename",
"co_name",
"co_firstlineno",
"co_lnotab",
"co_freevars",
"co_cellvars" ]
# Clamp major version to 2 or 3
version = max(min(version, 3), 2)

# Clamp minor version to 7-11
minor = max(min(minor, 11), 7)

attrs = version_lookup[(version, minor)]

assert all( k in attrs for k in kwds ), \
"Invalid function keyword(s) supplied: %s" % ( ", ".join( kwds.keys() ))
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