python之函数用法callable(),仅作了解

# -*- coding: utf-8 -*-
#python 27
#xiaodeng
#python之函数用法callable(),仅作了解

#callable()
#说明：判断对象object是否可调用。如果可以返回True，object仍然可能调用失败；但如果返回False，调用对象ojbect绝对不会成功
#函数也可以是一个Object，类也可以是Object
‘‘‘
callable(...)
    callable(object) -> bool

    Return whether the object is callable (i.e., some kind of function).
    Note that classes are callable, as are instances with a __call__() method.
‘‘‘

name=‘xiaodeng‘#是对象，但不是可调用对象
print callable(name)#False

key=range(5)
print callable(key)#False

class A():
    pass
print callable(A)#True