You can write type() and instanceof().
class Base():
pass
a = Base()
print "type([]) is list:\t\t",type([]) is list
print "type({}) is dict:\t\t", type({}) is dict
print "type(()) is tuple:\t\t", type(()) is tuple
print "type('') is str:\t\t", type("") is str
print "type(0) is int:\t\t\t", type(0) is int
print "type(3.14) is float:\t", type(3.14) is float
print "type(a) is Base:\t\t", type(a) is Base
type([]) is list: True
type({}) is dict: True
type(()) is tuple: True
type('') is str: True
type(0) is int: True
type(3.14) is float: True
type(a) is Base: False
class Base(object):
pass
a = Base()
print "isinstance([], list):\t", isinstance([], list)
print "isinstance({}, dict):\t", isinstance({}, dict)
print "isinstance((), tuple):\t", isinstance((), tuple)
print "isinstance('', str):\t", isinstance("", str)
print "isinstance(0, int):\t\t", isinstance(0, int)
print "isinstance(3.14, float):", isinstance(3.14, float)
print "isinstance(a, Base):\t" , isinstance(a, Base)
isinstance([], list): True
isinstance({}, dict): True
isinstance((), tuple): True
isinstance('', str): True
isinstance(0, int): True
isinstance(3.14, float): True
isinstance(a, Base): True
type()
can't find out the inheritance of the object
Use isinstance()
if you want to include inheritance.
class Base(object):
pass
class Derived(Base):
pass
b = Derived()
print "type(b) is Base:\t\t", type(b) is Base
print "isinstance(b, Base):\t", isinstance(b, Base)
type(b) is Base: False
isinstance(b, Base): True
Because of this difference, isinstance()
is usually used rather than type()
.
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