blocks|key|864337|text|我推荐使用非常棒的requests库：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|864338|import+requests

url+=+'http://maps.googleapis.com/maps/api/directions/json'

params+=+dict(
++++origin='Chicago,IL',
++++destination='Los%2BAngeles,CA',
++++waypoints='Joplin,MO%7COklahoma%2BCity,OK',
++++sensor='false'
)

resp+=+requests.get(url=url,+params=params)
data+=+resp.json()+#+Check+the+JSON+Response+Content+documentation+below|code-block|syntax|javascript|864339|JSON返回内容：https://requests.readthedocs.io/en/master/user/quickstart/#json-response-content|864340|entityMap|0|LINK|mutability|MUTABLE|url|https://requests.readthedocs.io/en/master/|1|https://requests.readthedocs.io/en/master/user/quickstart/#json-response-content^0|9|8|0|0|0|9|28|1|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@$A|V|B|W|1|X]]|C|$]]|$1|D|3|E|5|F|7|Y|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|Z|8|@]|9|@$A|10|B|11|1|12]]|C|$]]|$1|K|3|-4|5|6|7|13|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]|S|$5|N|O|P|C|$Q|T]]]]

I recommend using the awesome <a href="https://requests.readthedocs.io/en/master/" rel="noreferrer">requests</a> library:

<pre><code>import requests

url = 'http://maps.googleapis.com/maps/api/directions/json'

params = dict(
 origin='Chicago,IL',
 destination='Los+Angeles,CA',
 waypoints='Joplin,MO|Oklahoma+City,OK',
 sensor='false'
)

resp = requests.get(url=url, params=params)
data = resp.json() # Check the JSON Response Content documentation below
</code></pre>

JSON Response Content: <a href="https://requests.readthedocs.io/en/master/user/quickstart/#json-response-content" rel="noreferrer">https://requests.readthedocs.io/en/master/user/quickstart/#json-response-content</a>

blocks|key|864497|text|由于其内置的requests解码器，JSON模块负责检索JSON数据并对其进行解码。下面是取自the+module's+documentation的一个示例|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|864498|>>>+import+requests
>>>+r+=+requests.get('https://github.com/timeline.json')
>>>+r.json()
[{u'repository':+{u'open_issues':+0,+u'url':+'https://github.com/...|code-block|syntax|javascript|864499|因此，不必使用某些单独的模块来解码JSON。|864500|entityMap|0|LINK|mutability|MUTABLE|url|https://requests.readthedocs.io/en/latest/|1|https://requests.readthedocs.io/en/master/user/quickstart/#json-response-content^0|6|8|6|8|0|1B|Q|1|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@$9|Z|A|10|1|11]|$9|12|A|13|1|14]]|E|$]]|$1|F|3|G|5|H|7|15|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|16|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|17|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]|U|$5|P|Q|R|E|$S|V]]]]

The <a href="https://requests.readthedocs.io/en/latest/" rel="noreferrer"><code>requests</code></a> Python module takes care of both retrieving JSON data and decoding it, due to its builtin JSON decoder. Here is an example taken from <a href="https://requests.readthedocs.io/en/master/user/quickstart/#json-response-content" rel="noreferrer">the module's documentation</a>:

<pre><code>&gt;&gt;&gt; import requests
&gt;&gt;&gt; r = requests.get('https://github.com/timeline.json')
&gt;&gt;&gt; r.json()
[{u'repository': {u'open_issues': 0, u'url': 'https://github.com/...
</code></pre>

So there is no use of having to use some separate module for decoding JSON.

blocks|key|864531|text|requests内置了.json()方法|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|864532|import+requests
requests.get(url).json()|code-block|syntax|javascript|864533|entityMap|0|LINK|mutability|MUTABLE|url|http://docs.python-requests.org/en/latest/index.html^0|0|8|B|7|0|8|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]|$9|V|A|W|B|C]]|D|@$9|X|A|Y|1|Z]]|E|$]]|$1|F|3|G|5|H|7|10|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|11|8|@]|D|@]|E|$]]]|L|$M|$5|N|O|P|E|$Q|R]]]]

<a href="http://docs.python-requests.org/en/latest/index.html" rel="noreferrer"><code>requests</code></a> has built-in <code>.json()</code> method

<pre><code>import requests
requests.get(url).json()
</code></pre>

blocks|key|864309|text|import+urllib
import+json

url+=+'http://maps.googleapis.com/maps/api/directions/json?origin=Chicago,IL&destination=Los%2BAngeles,CA&waypoints=Joplin,MO%7COklahoma%2BCity,OK&sensor=false'
result+=+json.load(urllib.urlopen(url))|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|864310|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>import urllib
import json

url = 'http://maps.googleapis.com/maps/api/directions/json?origin=Chicago,IL&amp;destination=Los+Angeles,CA&amp;waypoints=Joplin,MO|Oklahoma+City,OK&amp;sensor=false'
result = json.load(urllib.urlopen(url))
</code></pre>

blocks|key|864399|text|使用请求库，很好地打印结果，以便更好地定位要提取的键/值，然后使用嵌套的for循环来解析数据。在这个例子中，我一步一步地提取驾驶方向。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|864400|import+json,+requests,+pprint

url+=+'http://maps.googleapis.com/maps/api/directions/json?'

params+=+dict(
++++origin='Chicago,IL',
++++destination='Los%2BAngeles,CA',
++++waypoints='Joplin,MO%7COklahoma%2BCity,OK',
++++sensor='false'
)


data+=+requests.get(url=url,+params=params)
binary+=+data.content
output+=+json.loads(binary)

#+test+to+see+if+the+request+was+valid
#print+output['status']

#+output+all+of+the+results
#pprint.pprint(output)

#+step-by-step+directions
for+route+in+output['routes']:
++++++++for+leg+in+route['legs']:
++++++++++++for+step+in+leg['steps']:
++++++++++++++++print+step['html_instructions']|code-block|syntax|javascript|864401|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Use the requests library, pretty print the results so you can better locate the keys/values you want to extract, and then use nested for loops to parse the data. In the example I extract step by step driving directions.

<pre><code>import json, requests, pprint

url = 'http://maps.googleapis.com/maps/api/directions/json?'

params = dict(
 origin='Chicago,IL',
 destination='Los+Angeles,CA',
 waypoints='Joplin,MO|Oklahoma+City,OK',
 sensor='false'
)


data = requests.get(url=url, params=params)
binary = data.content
output = json.loads(binary)

# test to see if the request was valid
#print output['status']

# output all of the results
#pprint.pprint(output)

# step-by-step directions
for route in output['routes']:
 for leg in route['legs']:
 for step in leg['steps']:
 print step['html_instructions']
</code></pre>

blocks|key|647263|text|试试这个：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|647264|import+requests
import+json

#+Goole+Maps+API.
link+=+'http://maps.googleapis.com/maps/api/directions/json?origin=Chicago,IL&destination=Los%2BAngeles,CA&waypoints=Joplin,MO%7COklahoma%2BCity,OK&sensor=false'

#+Request+data+from+link+as+'str'
data+=+requests.get(link).text

#+convert+'str'+to+Json
data+=+json.loads(data)

#+Now+you+can+access+Json+
for+i+in+data['routes'][0]['legs'][0]['steps']:
++++lattitude+=+i['start_location']['lat']
++++longitude+=+i['start_location']['lng']
++++print('{},+{}'.format(lattitude,+longitude))|code-block|syntax|javascript|647265|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Try this:

<pre><code>import requests
import json

# Goole Maps API.
link = 'http://maps.googleapis.com/maps/api/directions/json?origin=Chicago,IL&amp;destination=Los+Angeles,CA&amp;waypoints=Joplin,MO|Oklahoma+City,OK&amp;sensor=false'

# Request data from link as 'str'
data = requests.get(link).text

# convert 'str' to Json
data = json.loads(data)

# Now you can access Json 
for i in data['routes'][0]['legs'][0]['steps']:
 lattitude = i['start_location']['lat']
 longitude = i['start_location']['lng']
 print('{}, {}'.format(lattitude, longitude))
</code></pre>

blocks|key|647321|text|只需在json()方法中使用import+requests即可：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|647322|source+=+requests.get("url").json()
print(source)|code-block|syntax|javascript|647323|或者，您可以使用以下命令：|647324|import+json,urllib.request
data+=+urllib.request.urlopen("url").read()
output+=+json.loads(data)
print+(output)|647325|entityMap^0|3|6|E|F|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|W|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|Y|8|@]|D|@]|E|$]]]|P|$]]

just <code>import requests</code> and use from <code>json()</code> method :
<pre><code>source = requests.get(&quot;url&quot;).json()
print(source)
</code></pre>
OR you can use this :
<pre><code>import json,urllib.request
data = urllib.request.urlopen(&quot;url&quot;).read()
output = json.loads(data)
print (output)
</code></pre>

I want to dynamically query Google Maps through the Google Directions API. As an example, this request calculates the route from Chicago, IL to Los Angeles, CA via two waypoints in Joplin, MO and Oklahoma City, OK:

<a href="http://maps.googleapis.com/maps/api/directions/json?origin=Chicago,IL&amp;destination=Los+Angeles,CA&amp;waypoints=Joplin,MO|Oklahoma+City,OK&amp;sensor=false" rel="noreferrer">http://maps.googleapis.com/maps/api/directions/json?origin=Chicago,IL&amp;destination=Los+Angeles,CA&amp;waypoints=Joplin,MO|Oklahoma+City,OK&amp;sensor=false</a>

It returns a result <a href="https://developers.google.com/maps/documentation/directions/intro?csw=1#Waypoints" rel="noreferrer">in the JSON format</a>.

How can I do this in Python? I want to send such a request, receive the result and parse it.

HTTP requests and JSON parsing in Python

我想通过Google Directions API动态查询Google Maps。例如，此请求计算从伊利诺伊州芝加哥到加利福尼亚州洛杉矶的路线，途经密苏里州乔普林和俄克拉何马州俄克拉何马城的两个路点：它返回一个结果。我如何在Python中做到这一点？我想发送这样一个请求，接收结果并对其进行解析。

问Python中的HTTP请求和JSON解析
EN

回答 7

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问Python中的HTTP请求和JSON解析EN

回答 7

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问Python中的HTTP请求和JSON解析
EN