from test_support import verbose,TestFailed
class F:
def a(self):
pass
def b():
'my docstring'
pass
# setting attributes on functions
try:
b.publish
except AttributeError:
pass
else:
raise TestFailed, 'expected AttributeError'
if b.__dict__ <> None:
raise TestFailed, 'expected unassigned func.__dict__ to be None'
b.publish = 1
if b.publish <> 1:
raise TestFailed, 'function attribute not set to expected value'
docstring = 'its docstring'
b.__doc__ = docstring
if b.__doc__ <> docstring:
raise TestFailed, 'problem with setting __doc__ attribute'
if 'publish' not in dir(b):
raise TestFailed, 'attribute not in dir()'
del b.__dict__
if b.__dict__ <> None:
raise TestFailed, 'del func.__dict__ did not result in __dict__ == None'
b.publish = 1
b.__dict__ = None
if b.__dict__ <> None:
raise TestFailed, 'func.__dict__ = None did not result in __dict__ == None'
f1 = F()
f2 = F()
try:
F.a.publish
except AttributeError:
pass
else:
raise TestFailed, 'expected AttributeError'
try:
f1.a.publish
except AttributeError:
pass
else:
raise TestFailed, 'expected AttributeError'
# In Python 2.1 beta 1, we disallowed setting attributes on unbound methods
# (it was already disallowed on bound methods). See the PEP for details.
try:
F.a.publish = 1
except TypeError:
pass
else:
raise TestFailed, 'expected TypeError'
# But setting it explicitly on the underlying function object is okay.
F.a.im_func.publish = 1
if F.a.publish <> 1:
raise TestFailed, 'unbound method attribute not set to expected value'
if f1.a.publish <> 1:
raise TestFailed, 'bound method attribute access did not work'
if f2.a.publish <> 1:
raise TestFailed, 'bound method attribute access did not work'
if 'publish' not in dir(F.a):
raise TestFailed, 'attribute not in dir()'
try:
f1.a.publish = 0
except TypeError:
pass
else:
raise TestFailed, 'expected TypeError'
# See the comment above about the change in semantics for Python 2.1b1
try:
F.a.myclass = F
except TypeError:
pass
else:
raise TestFailed, 'expected TypeError'
F.a.im_func.myclass = F
f1.a.myclass
f2.a.myclass
f1.a.myclass
F.a.myclass
if f1.a.myclass is not f2.a.myclass or \
f1.a.myclass is not F.a.myclass:
raise TestFailed, 'attributes were not the same'
# try setting __dict__
try:
F.a.__dict__ = (1, 2, 3)
except TypeError:
pass
else:
raise TestFailed, 'expected TypeError'
F.a.im_func.__dict__ = {'one': 11, 'two': 22, 'three': 33}
if f1.a.two <> 22:
raise TestFailed, 'setting __dict__'
from UserDict import UserDict
d = UserDict({'four': 44, 'five': 55})
try:
F.a.__dict__ = d
except TypeError:
pass
else:
raise TestFailed
if f2.a.one <> f1.a.one <> F.a.one <> 11:
raise TestFailed
# im_func may not be a Python method!
import new
F.id = new.instancemethod(id, None, F)
eff = F()
if eff.id() <> id(eff):
raise TestFailed
try:
F.id.foo
except AttributeError: pass
else: raise TestFailed
try:
F.id.foo = 12
except TypeError: pass
else: raise TestFailed
try:
F.id.foo
except AttributeError: pass
else: raise TestFailed
try:
eff.id.foo
except AttributeError: pass
else: raise TestFailed
try:
eff.id.foo = 12
except TypeError: pass
else: raise TestFailed
try:
eff.id.foo
except AttributeError: pass
else: raise TestFailed
# Regression test for a crash in pre-2.1a1
def another():
pass
del another.__dict__
del another.func_dict
another.func_dict = None
try:
del another.bar
except AttributeError: pass
else: raise TestFailed
# This isn't specifically related to function attributes, but it does test a
# core dump regression in funcobject.c
del another.func_defaults
def foo():
pass
def bar():
pass
def temp():
print 1
if foo==bar: raise TestFailed
d={}
d[foo] = 1
foo.func_code = temp.func_code
d[foo]
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