与坐标Tweepy python的推文

Question

I am trying to use Streaming Api of twitter and tweepy to get some tweets filtered by some keywords(already done) and their coordinates which I can later plot on google map. However i am getting an error when I am executing the following code to store only those tweets where coordinates are not null.

Code:

def on_data(self, data):

    json_object = json.loads(data)
    if (json_object["user"]["coordinates"]!="null"):
        f.write(data)

After some time I get an error that says

Key error:user

Can anybody tell me the reason why this error happened and what steps can be taken to resolve or understand this error better.

Answer 1

You are getting this error because its not necessary all the tweets will have the user field.

def on_data(self, data):
    json_object = json.loads(data)
    # next statement will short circuit if 'user' field is not found.
    if "user" in json_object and "coordinates" in json_object["user"] and json_object["user"]["coordinates"]!="null":
        f.write(data)

Or if you want to do this gracefully -

def on_data(self, data):
    try:
        if json_object["user"]["coordinates"]!="null":
            f.write(data)
    except:
        pass