cpython/Lib/test/test_copy_reg.py

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import copy_reg
class C:
pass
try:
copy_reg.pickle(C, None, None)
except TypeError, e:
print "Caught expected TypeError:"
print e
else:
print "Failed to catch expected TypeError when registering a class type."
print
try:
copy_reg.pickle(type(1), "not a callable")
except TypeError, e:
print "Caught expected TypeError:"
print e
else:
print "Failed to catch TypeError " \
"when registering a non-callable reduction function."
print
try:
copy_reg.pickle(type(1), int, "not a callable")
except TypeError, e:
print "Caught expected TypeError:"
print e
else:
print "Failed to catch TypeError " \
"when registering a non-callable constructor."