attributes_list = [attribute for attribute in dir(obj) if attribute[0].islower()]

>>> class new_class():
...   def __init__(self, number):
...     self.multi = int(number) * 2
...     self.str = str(number)
... 
>>> a = new_class(2)
>>> a.__dict__
{'multi': 4, 'str': '2'}
>>> a.__dict__.keys()
dict_keys(['multi', 'str'])

您可能还会发现pprint有帮助。

>>> ', '.join(i for i in dir(a) if not i.startswith('__'))
'multi, str'

这当然会打印类定义中的任何方法或属性。你可以通过将i.startwith('__')更改为i.startwith('_')来排除“私有”方法。

你可以使用dir(your_object)来获取属性，使用getattr(your_object, your_object_attr)来获取值

用法:

for att in dir(your_object):
    print (att, getattr(your_object,att))

如果你的对象没有__dict__，这特别有用。如果不是这样，你也可以尝试var(your_object)

请参见以下Python shell脚本执行顺序，它将给出从创建类到提取实例字段名的解决方案。

>>> class Details:
...       def __init__(self,name,age):
...           self.name=name
...           self.age =age
...       def show_details(self):
...           if self.name:
...              print "Name : ",self.name
...           else:
...              print "Name : ","_"
...           if self.age:
...              if self.age>0:
...                 print "Age  : ",self.age
...              else:
...                 print "Age can't be -ve"
...           else:
...              print "Age  : ","_"
... 
>>> my_details = Details("Rishikesh",24)
>>> 
>>> print my_details
<__main__.Details instance at 0x10e2e77e8>
>>> 
>>> print my_details.name
Rishikesh
>>> print my_details.age
24
>>> 
>>> my_details.show_details()
Name :  Rishikesh
Age  :  24
>>> 
>>> person1 = Details("",34)
>>> person1.name
''
>>> person1.age
34
>>> person1.show_details
<bound method Details.show_details of <__main__.Details instance at 0x10e2e7758>>
>>> 
>>> person1.show_details()
Name :  _
Age  :  34
>>>
>>> person2 = Details("Rob Pike",0)
>>> person2.name
'Rob Pike'
>>> 
>>> person2.age
0
>>> 
>>> person2.show_details()
Name :  Rob Pike
Age  :  _
>>> 
>>> person3 = Details("Rob Pike",-45)
>>> 
>>> person3.name
'Rob Pike'
>>> 
>>> person3.age
-45
>>> 
>>> person3.show_details()
Name :  Rob Pike
Age can't be -ve
>>>
>>> person3.__dict__
{'age': -45, 'name': 'Rob Pike'}
>>>
>>> person3.__dict__.keys()
['age', 'name']
>>>
>>> person3.__dict__.values()
[-45, 'Rob Pike']
>>>

做这件事的方法不止一种:

#! /usr/bin/env python3
#
# This demonstrates how to pick the attiributes of an object

class C(object) :

  def __init__ (self, name="q" ):
    self.q = name
    self.m = "y?"

c = C()

print ( dir(c) )

当运行时，这段代码产生:

jeffs@jeff-desktop:~/skyset$ python3 attributes.py 
['__class__', '__delattr__', '__dict__', '__dir__', '__doc__',      '__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__', '__init__', '__le__', '__lt__', '__module__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__', 'm', 'q']

jeffs@jeff-desktop:~/skyset$