Python __dict__样例

__dict__ :class\object

class DogClass:
    def __init__(self, name, color):
        self.name = name
        self.color = color

    def bark(self):
        if self.color == "black":
            return True
        else:
            return False


dc = DogClass('rudra', 'white')
print("instance's __dict__: \n",dc.__dict__,'\n')
print("class's __dict__: \n",DogClass.__dict__)

输出：

instance's __dict__: 
 {'name': 'rudra', 'color': 'white'} 

class's __dict__: 
 {'__module__': '__main__', '__init__': <function DogClass.__init__ at 0x000002215E3FCB80>, 'bark': <function DogClass.bark at 0x000002215E6719D0>, '__dict__': <attribute '__dict__' of 'DogClass' objects>, '__weakref__': <attribute '__weakref__' of 'DogClass' objects>, '__doc__': None}

__dict__ module

import math

print (math.__dict__)

输出：

{'__name__': 'math', '__doc__': 'This module provides access to the mathematical functions\ndefined by the C standard.', '__package__': '', '__loader__': <class '_frozen_importlib.BuiltinImporter'>, '__spec__': ModuleSpec(name='math', loader=<class '_frozen_importlib.BuiltinImporter'>, origin='built-in'), 'acos': <built-in function acos>, 'acosh': <built-in function acosh>, 'asin': <built-in function asin>, 'asinh': <built-in function asinh>, 'atan': <built-in function atan>, 'atan2': <built-in function atan2>, 'atanh': <built-in function atanh>, 'ceil': <built-in function ceil>, 'copysign': <built-in function copysign>, 'cos': <built-in function cos>, 'cosh': <built-in function cosh>, 'degrees': <built-in function degrees>, 'dist': <built-in function dist>, 'erf': <built-in function erf>, 'erfc': <built-in function erfc>, 'exp': <built-in function exp>, 'expm1': <built-in function expm1>, 'fabs': <built-in function fabs>, 'factorial': <built-in function factorial>, 'floor': <built-in function floor>, 'fmod': <built-in function fmod>, 'frexp': <built-in function frexp>, 'fsum': <built-in function fsum>, 'gamma': <built-in function gamma>, 'gcd': <built-in function gcd>, 'hypot': <built-in function hypot>, 'isclose': <built-in function isclose>, 'isfinite': <built-in function isfinite>, 'isinf': <built-in function isinf>, 'isnan': <built-in function isnan>, 'isqrt': <built-in function isqrt>, 'lcm': <built-in function lcm>, 'ldexp': <built-in function ldexp>, 'lgamma': <built-in function lgamma>, 'log': <built-in function log>, 'log1p': <built-in function log1p>, 'log10': <built-in function log10>, 'log2': <built-in function log2>, 'modf': <built-in function modf>, 'pow': <built-in function pow>, 'radians': <built-in function radians>, 'remainder': <built-in function remainder>, 'sin': <built-in function sin>, 'sinh': <built-in function sinh>, 'sqrt': <built-in function sqrt>, 'tan': <built-in function tan>, 'tanh': <built-in function tanh>, 'trunc': <built-in function trunc>, 'prod': <built-in function prod>, 'perm': <built-in function perm>, 'comb': <built-in function comb>, 'nextafter': <built-in function nextafter>, 'ulp': <built-in function ulp>, 'pi': 3.141592653589793, 'e': 2.718281828459045, 'tau': 6.283185307179586, 'inf': inf, 'nan': nan}