Python AttributeError: 'str' 对象没有属性 'items'
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AttributeError: 'str' object has no attribute 'items'
提问by snrkl
In the following code:
在以下代码中：
#!/usr/local/bin/python
import json
APPLICATION_NAME = 'cc9226315643df89-36bf02429075329d0ba36748360d050c'
HEADERS1 = json.dumps(dict(Destination = u"/api/af/latest/applications/%s/rulesets" % (APPLICATION_NAME)))
print "Headers1 is %s" % (HEADERS1)
HEADERS2 = {'Destination': '/api/af/latest/applications/%s/rulesets' % (APPLICATION_NAME)}
print "Headers2 is %s" % (HEADERS2)
I get the following output:
我得到以下输出：
Headers1 is {"Destination": "/api/af/latest/applications/cc9226315643df89-36bf02429075329d0ba36748360d050c/rulesets"}
Headers2 is {'Destination': '/api/af/latest/applications/cc9226315643df89-36bf02429075329d0ba36748360d050c/rulesets'}
but when I try to use either HEADER1 or HEADER2 in a REST call using requests(), I get very different results:
但是当我尝试在使用 requests() 的 REST 调用中使用 HEADER1 或 HEADER2 时，我得到了非常不同的结果：
SERVER_URL = 'http://1.1.33.109:8087%s' % (APP_PATH)
REQ_DATA = None
print "Headers are: ", HEADERS
print "SERVER_URL is: ", SERVER_URL
print "Request Data is:", REQ_DATA
print ""
RESPONSE = requests.request(
'MOVE',
SERVER_URL,
auth = ('admin', 'admin'),
verify = False,
data = REQ_DATA,
headers = HEADERS1 ) #<-- If I use HEADER1 it breaks, if I use HEADER2 it works
print "Move Ruleset back to the Application RESULT: %s\n" % (RESPONSE)
I get the following with HEADER1:
我用 HEADER1 得到以下信息：
Traceback (most recent call last):
File "./myrest.py", line 234, in <module>
headers = HEADERS1 )
File "/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/requests/api.py", line 44, in request
return session.request(method=method, url=url, **kwargs)
File "/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/requests/sessions.py", line 324, in request
prep = req.prepare()
File "/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/requests/models.py", line 223, in prepare
p.prepare_headers(self.headers)
File "/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/requests/models.py", line 340, in prepare_headers
headers = dict((name.encode('ascii'), value) for name, value in headers.items())
AttributeError: 'str' object has no attribute 'items'
If I use HEADER2 it executes cleanly:
如果我使用 HEADER2，它会干净地执行：
Move Ruleset back to the Application RESULT: Response [200]
将规则集移回应用程序结果：响应 [200]
Can anyone explain what the differences are?
谁能解释一下有什么区别？
采纳答案by Martijn Pieters
You are passing in a string; headerscan't everbe a JSON encoded string, it is always a Python dictionary.
您正在传递一个字符串；headers不能永远是一个JSON编码字符串，它始终是一个Python字典。
The printresults are deceptive; JSON encoded objects look a lot like Python dictionary representations but they are farfrom the same thing.
该print结果都是骗人的; JSON 编码的对象看起来很像 Python 字典表示，但它们相去甚远。
The requestsAPIclearly states that headersmust be a dictionary:
该requestsAPI明确规定，headers必须是一个字典：
headers– (optional) Dictionary of HTTP Headers to send with theRequest.
headers–（可选）与Request.
JSON data is something you'd send as content to another server, not something you'd use to communicate with a Python API.
JSON 数据是作为内容发送到另一台服务器的数据，而不是用于与 Python API 通信的数据。
回答by ddtraveller
I had this issue and I needed to make the header with a content type and pass in a data element as json.
我遇到了这个问题，我需要使用内容类型制作标题并将数据元素作为 json 传递。
import requests
import json
headerInfo = {'content-type': 'application/json' }
payload = {'text': 'okay!!!', 'auth_token': 'aasdasdasdasd'}
jLoad = json.dumps(payload)
r = requests.post('http://example.com:3030/widgets/init', headers=headerInfo, data=jLoad)
print r.text
print r.status_code
回答by channareddy biradar
You Can pass {
你可以通过{
'Content-Type': 'application/json;charset=UTF-8'
}
it worked
有效
