我正在使用Python 3从http://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/2.5_day.geojson访问实时JSON feed 。这是代码：
try:
# For Py 3.0+
from urllib.request import urlopen
except ImportError:
# For Py 2
from urllib2 import urlopen
import json
def printResults(data):
# Use the json module to load the string data into a dictionary
theJSON = json.loads(data) #pass JSON data into a dictionary
# now we can access the contents of the JSON like any other Python object
if "title" in theJSON["metadata"]:
print (theJSON["metadata"]["title"])
def main():
# JSON feed of earthquake activity larger than 2.5 in the past 25 hours
urlData = "http://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/2.5_day.geojson"
#open url and read contents
webUrl = urlopen(urlData)
print (webUrl.getcode())
if (webUrl.getcode() == 200):
data = webUrl.read()
#print results
printResults(data)
else:
print ("Received an error from server " + str(webUrl.getcode()))
if __name__ == "__main__":
main()
我得到以下输出：
Traceback (most recent call last):
File "<string>", line 420, in run_nodebug
File "C:\Users\modar\Desktop\jsondata_finished.py", line 56, in <module>
File "C:\Users\modar\Desktop\jsondata_finished.py", line 50, in main
else:
File "C:\Users\modar\jsondata_finished.py", line 13, in printResults
if "title" in theJSON["metadata"]:
File "C:\Python33\lib\json\__init__.py", line 319, in loads
return _default_decoder.decode(s)
File "C:\Python33\lib\json\decoder.py", line 352, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
TypeError: can't use a string pattern on a bytes-like object
我怎样才能解决这个问题？关于出了什么问题的解释也很好。提前致谢。
使用上面在我的评论中链接到的请求库，您的代码变为：
quake_data = requests.get('http://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/2.5_day.geojson').json()
print(quake_data['metadata']['title'])
我希望它能帮助...
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