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46 lines (35 loc) · 799 Bytes
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builtin_hasattr.py
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46 lines (35 loc) · 799 Bytes
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class A:
var = 132
def __init__(self):
self.var2 = 34
def meth(self, i):
return 42 + i
a = A()
print(hasattr(a, "var"))
print(hasattr(a, "var2"))
print(hasattr(a, "meth"))
print(hasattr(a, "_none_such"))
print(hasattr(list, "foo"))
class C:
def __getattr__(self, attr):
if attr == "exists":
return attr
elif attr == "raise":
raise Exception(123)
raise AttributeError
c = C()
print(hasattr(c, "exists"))
print(hasattr(c, "doesnt_exist"))
# ensure that non-AttributeError exceptions propagate out of hasattr
try:
hasattr(c, "raise")
except Exception as er:
print(er)
try:
hasattr(1, b'123')
except TypeError:
print('TypeError')
try:
hasattr(1, 123)
except TypeError:
print('TypeError')