How to check python class instance

result.txt

<type 'instance'> __main__.A True True
<class '__main__.B'> <class '__main__.B'> True True
<type 'int'> <type 'int'> False False
<type 'tuple'> <type 'tuple'> False False
<type 'list'> <type 'list'> False False
<type 'dict'> <type 'dict'> False False
<class '__main__.DD'> <class '__main__.DD'> True True
<type 'bool'> <type 'bool'> False False

type_check.py

class A: pass
class B(object): pass
class DD(dict): pass

a = A()
b = B()
i = 0
t = ()
l = []
d = {}
dd = DD()
f = False

for p in (a, b, i, t, l, d, dd, f):
 print type(p),
 print p.__class__,
 print hasattr(p, "__dict__"),
 print p.__class__.__module__ != "__builtin__"