如何从dweet打印特定值？

Question

I have an output from dweepy as :

[{'content': {'mouse_x': 271,
   'mouse_y': 285,
   'tilt_x': 0,
   'tilt_y': 0,
   'tilt_z': 82},
  'created': '2018-02-10T06:03:02.680Z',
  'thing': 'my_thing_name'}]

My input was :

dweepy.get_latest_dweet_for('my_thing_name')

Question :

How to print value of mouse_x value alone from above dweet output ?

What i tried was :

dweepy.dweet_for('my_thing_name', {'': 'mouse_x'})

which gave me output :

{'content': {'': 'mouse_x'},
 'created': '2018-02-10T06:23:20.320Z',
 'thing': 'my_thing_name',
 'transaction': '6f295639-a667-48ff-bbbf-6dda111333d1'}

How can i print value 271 for mouse_x ?

Answer 1

For the content you are dweeting with the name as my_thing_name , let us assume that you have dweet_for() as follows initially

dweepy.dweet_for('my_thing_name', {'mouse_x': 271, 'mouse_y': 285, 'tilt_x': 0, 'tilt_y': 0, 'tilt_z': 82})

Which creates a dweet with name as my_thing_name . Now when you query for the dweet using dweepy.get_latest_dweet_for() you are returned a dictionary as follows

a = dweepy.get_latest_dweet_for('my_thing_name')

Result is a list of object whose keys are content , thing and created . For retrieving the content for key mouse_x you need to access the object inside the dweet response's content dictionary.

[{u'content': {u'mouse_y': 285, u'mouse_x': 271, u'tilt_z': 82, u'tilt_x': 0, u'tilt_y': 0}, u'thing': u'my_thing_name', u'created': u'2018-02-10T06:39:53.715Z'}]

This can be done by doing a[0]['content']['mouse_x'] which will return the value 271 . This will however work only with the first dweet object. If there are multiple objects returned you can loop through the items and access the mouse_x value by using a[i]['content']['mouse_x'] where i corresponds to the index of the items.

>>> a[0]['content']['mouse_x']
271