Python查看对象属性的方法

一、总结

一句话总结：

a、使用dir(object)或者object.dict

b、也可以使用help函数

二、Python查看对象属性的方法

转自或参考：Python查看对象属性的方法
https://www.cnblogs.com/linyouyi/p/11406638.html"> Python查看对象属性的方法

dir() 函数

D:\pythontest>python
Python 3.5.0 (v3.5.0:374f501f4567, Sep 13 2015, 02:27:37) [MSC v.1900 64 bit (AM
D64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import requests
>>> res = requests.get(\'https://www.sogou.com/link?url=DSOYnZeCC_popvGkrcLjd__A2
nuyEZQRtN0U1Xf4Goe7gAE91qpuJw..\')
>>> 
>>> 
>>> dir(res)
[\'__attrs__\', \'__bool__\', \'__class__\', \'__delattr__\', \'__dict__\', \'__dir__\', \'__
doc__\', \'__enter__\', \'__eq__\', \'__exit__\', \'__format__\', \'__ge__\', \'__getattribu
te__\', \'__getstate__\', \'__gt__\', \'__hash__\', \'__init__\', \'__iter__\', \'__le__\', \'
__lt__\', \'__module__\', \'__ne__\', \'__new__\', \'__nonzero__\', \'__reduce__\', \'__redu
ce_ex__\', \'__repr__\', \'__setattr__\', \'__setstate__\', \'__sizeof__\', \'__str__\', \'_
_subclasshook__\', \'__weakref__\', \'_content\', \'_content_consumed\', \'_next\', \'appa
rent_encoding\', \'close\', \'connection\', \'content\', \'cookies\', \'elapsed\', \'encodin
g\', \'headers\', \'history\', \'is_permanent_redirect\', \'is_redirect\', \'iter_content\'
, \'iter_lines\', \'json\', \'links\', \'next\', \'ok\', \'raise_for_status\', \'raw\', \'reaso
n\', \'request\', \'status_code\', \'text\', \'url\']
>>> 
>>> 
>>> print(res.url)
https://www.sogou.com/link?url=DSOYnZeCC_popvGkrcLjd__A2nuyEZQRtN0U1Xf4Goe7gAE91
qpuJw..
>>> print(res.text)
<meta content="always" name="referrer"><script>window.location.replace("http://w
ww.hujiang.com/ciku/register/")</script><noscript><META http-equiv="refresh" con
tent="0;URL=\'http://www.hujiang.com/ciku/register/\'"></noscript>

help() 函数

调用内置帮助系统

>>> help(res)
Help on Response in module requests.models object:

class Response(builtins.object)
 |  The :class:`Response <Response>` object, which contains a
 |  server\'s response to an HTTP request.
 |
 |  Methods defined here:
 |
 |  __bool__(self)
 |      Returns True if :attr:`status_code` is less than 400.
 |
 |      This attribute checks if the status code of the response is between
 |      400 and 600 to see if there was a client error or a server error. If
 |      the status code, is between 200 and 400, this will return True. This
 |      is **not** a check to see if the response code is ``200 OK``.
 |
 |  __enter__(self)
 |
 |  __exit__(self, *args)
 |
 |  __getstate__(self)
 |
 |  __init__(self)
 |      Initialize self.  See help(type(self)) for accurate signature.
 | 
 | 
 | 
 | 
 | 
 |  
 | 
 | 
 | 

-- More  --

#按q退出

vars() 函数

vars([object]) 返回object对象的__dict__属性，其中object对象可以是模块，类，实例，或任何其他有__dict__属性的对象。所以，其与直接访问__dict__属性等价。示例如下（这里是反例，mser对象中没有__dict__属性）：

>>> vars(res)
{\'request\': <PreparedRequest [GET]>, \'reason\': \'OK\', \'headers\': {\'Server\': \'ngin
x\', \'UUID\': \'6e3340cd-af97-40b4-bc43-f61aef2f27fc\', \'Content-Type\': \'text/html;
charset=GBK\', \'Connection\': \'keep-alive\', \'Vary\': \'Accept-Encoding\', \'Expires\':
\'Sat, 24 Aug 2019 16:01:02 GMT\', \'Content-Encoding\': \'gzip\', \'Date\': \'Sat, 24 Au
g 2019 16:01:02 GMT\', \'Set-Cookie\': \'ABTEST=0|1566662462|v17; expires=Mon, 23-Se
p-19 16:01:02 GMT; path=/, IPLOC=CN4601; expires=Sun, 23-Aug-20 16:01:02 GMT; do
main=.sogou.com; path=/, SUID=E5FF1D6F2513910A000000005D615F3E; expires=Fri, 19-
Aug-2039 16:01:02 GMT; domain=.sogou.com; path=/, black_passportid=1; domain=.so
gou.com; path=/; expires=Thu, 01-Dec-1994 16:00:00 GMT\', \'Transfer-Encoding\': \'c
hunked\', \'P3P\': \'CP="CURa ADMa DEVa PSAo PSDo OUR BUS UNI PUR INT DEM STA PRE CO
M NAV OTC NOI DSP COR", CP="CURa ADMa DEVa PSAo PSDo OUR BUS UNI PUR INT DEM STA
 PRE COM NAV OTC NOI DSP COR", CP="CURa ADMa DEVa PSAo PSDo OUR BUS UNI PUR INT
DEM STA PRE COM NAV OTC NOI DSP COR"\', \'Cache-Control\': \'max-age=0\'}, \'status_co
de\': 200, \'_content_consumed\': True, \'history\': [], \'elapsed\': datetime.timedelt
a(0, 0, 669786), \'_content\': b\'<meta content="always" name="referrer"><script>wi
ndow.location.replace("http://www.hujiang.com/ciku/register/")</script><noscript
><META http-equiv="refresh" content="0;URL=\\'http://www.hujiang.com/ciku/registe
r/\\'"></noscript>\', \'cookies\': <RequestsCookieJar[Cookie(version=0, name=\'IPLOC\'
, value=\'CN4601\', port=None, port_specified=False, domain=\'.sogou.com\', domain_s
pecified=True, domain_initial_dot=True, path=\'/\', path_specified=True, secure=Fa
lse, expires=1598198462, discard=False, comment=None, comment_url=None, rest={},
 rfc2109=False), Cookie(version=0, name=\'SUID\', value=\'E5FF1D6F2513910A000000005
D615F3E\', port=None, port_specified=False, domain=\'.sogou.com\', domain_specified
=True, domain_initial_dot=True, path=\'/\', path_specified=True, secure=False, exp
ires=2197382462, discard=False, comment=None, comment_url=None, rest={}, rfc2109
=False), Cookie(version=0, name=\'ABTEST\', value=\'0|1566662462|v17\', port=None, p
ort_specified=False, domain=\'www.sogou.com\', domain_specified=False, domain_init
ial_dot=False, path=\'/\', path_specified=True, secure=False, expires=1569254462,
discard=False, comment=None, comment_url=None, rest={}, rfc2109=False)]>, \'url\':
 \'https://www.sogou.com/link?url=DSOYnZeCC_popvGkrcLjd__A2nuyEZQRtN0U1Xf4Goe7gAE
91qpuJw..\', \'_next\': None, \'encoding\': \'GBK\', \'raw\': <urllib3.response.HTTPRespo
nse object at 0x00000000034BE9B0>, \'connection\': <requests.adapters.HTTPAdapter
object at 0x00000000034AA4A8>}
>>>

type() 函数

type(object)返回对象object的类型。

>>> type(res)
<class \'requests.models.Response\'>

callable() 函数

callable(object)：若object对象是可调用的，则返回True，否则返回False。注意，即使返回True也可能调用失败，但返回False调用一定失败。

>>> callable(res)
False