what kind of data is this?

[mrteach]

I'm using mpd and a python wrapper. When I use status() I get this it starts with the ___ bracket. I'm trying to retrieve this data to find out if it is playing or not.
>>> data
{'songid': '28', 'playlistlength': '1', 'playlist': '32', 'repeat': '0', 'consume': '0', 'mixrampdb': '0.000000', 'random': '0', 'state': 'play', 'xfade': '0', 'volume': '-1', 'single': '1', 'mixrampdelay': 'nan', 'time': '228:429', 'song': '0', 'elapsed': '228.473', 'bitrate': '128', 'audio': '44100:24:2'}

My current workaround is turning it into a string and using the split(',') to retrieve my information.

[kusti8]

Looks like it is a dictionary.

[mahjongg]

looks like the internal list of strings used in an music player program that has a "playlist", and organized so that internationalizing (translating the program) is made easier.

[mrteach]

any easy way to extract the data? into a variable I want to know if it is playing or not..

[Douglas6]

I believe kusti8 is correct, but you can verify by reading the documentation regarding how you got the data variable. Assuming it is a Python dictionary, you can access the 'state' property so:

Code: Select all

if data['state'] == 'play':
    print('playing')

Very basic, very well documented Python code.

[DougieLawson]

https://docs.python.org/2/library/json.html

It's JSON so simple to decode.

[mrteach]

okay how to I use json.... I want to check what state it is on...

[DougieLawson]

Code: Select all

import json
decoded = json.loads(jsondata)
print decoded['songid'], decoded['state']

[gkreidl]

Code: Select all

import json
decoded = json.loads(jsondata)
print decoded['songid'], decoded['state']

Sorry, Dougie, but this is simply nonsense. Why should anybody use Json inside Python to "decode" a simple Python dictionary,

[mrteach]

oh sorry I didn't read the first parts. Yes that works perfectly =)

if data['state'] == 'play':
print('playing')

[mrteach]

Thanks again that code worked perfectly. I want to do one more thing

i'm doing data['time']
i get this outputted
'21:429'
is it possible to some how extract compare the numbers in a %.

e.g. 21/429 = 0.05 = 5%

I want to created an LED bar that will show the progress of the audio.

EDIT: I tried just replacing the : to a / but that didn't work =/ lol

[mrteach]

Nevermind figured it out good old 'eval'

[Douglas6]

I'm using mpd and a python wrapper. When I use status() I get this it starts with the ___ bracket. I'm trying to retrieve this data to find out if it is playing or not.
>>> data
{'songid': '28', 'playlistlength': '1', 'playlist': '32', 'repeat': '0', 'consume': '0', 'mixrampdb': '0.000000', 'random': '0', 'state': 'play', 'xfade': '0', 'volume': '-1', 'single': '1', 'mixrampdelay': 'nan', 'time': '228:429', 'song': '0', 'elapsed': '228.473', 'bitrate': '128', 'audio': '44100:24:2'}

Gotta admit, that data looks a bit 'pantsed'.
data['time'] = 228:429
data['elapsed'] = 228.473

So not only is the format different (colon vs. dot), but the elapsed time is greater than the song time (assuming that's what those are.) Again assuming they represent seconds and milliseconds, you could split out the first part of each and divide elapsed by (total) time, but, I'm not feeling good about the data.

What is the 'python wrapper' you're using? Isn't there a fairly standard Python library for MPD?

[EDIT: Ok, if that works, clearly my assumptions were wrong.]

[DougieLawson]

Code: Select all

import json
decoded = json.loads(jsondata)
print decoded['songid'], decoded['state']

Sorry, Dougie, but this is simply nonsense. Why should anybody use Json inside Python to "decode" a simple Python dictionary,

It walks like JSON, it quacks like JSON, why not decode it like JSON?

[mrteach]

I'm using mpd and a python wrapper. When I use status() I get this it starts with the ___ bracket. I'm trying to retrieve this data to find out if it is playing or not.
>>> data
{'songid': '28', 'playlistlength': '1', 'playlist': '32', 'repeat': '0', 'consume': '0', 'mixrampdb': '0.000000', 'random': '0', 'state': 'play', 'xfade': '0', 'volume': '-1', 'single': '1', 'mixrampdelay': 'nan', 'time': '228:429', 'song': '0', 'elapsed': '228.473', 'bitrate': '128', 'audio': '44100:24:2'}

Gotta admit, that data looks a bit 'pantsed'.
data['time'] = 228:429
data['elapsed'] = 228.473

So not only is the format different (colon vs. dot), but the elapsed time is greater than the song time (assuming that's what those are.) Again assuming they represent seconds and milliseconds, you could split out the first part of each and divide elapsed by (total) time, but, I'm not feeling good about the data.

What is the 'python wrapper' you're using? Isn't there a fairly standard Python library for MPD?

[EDIT: Ok, if that works, clearly my assumptions were wrong.]

Yeah I had to take a close look (I didn't think they had a song length) they did it by saying 228(current duration of song):429(length of the whole song).

Using python-mpd2 by the way.

Thanks again. I think the only reason I wouldn't use json is because you have to import something else(not sure if this acutally takes memory or anything) and it won't decode right away you have to convert it from ' to " using json.dumps(data) first.

so I would have to do

Code: Select all

import json
decoded = json.loads(json.dumps(data))
print decoded['songid'], decoded['state']

and oddly it would output u'play or something like that instead of just play (unless I messed up with the code). I tried without dumping it (converting ' to ") but it gave me an error.

this did help me learn a bit about json.. not sure what it is for but will be in the back in my memory banks. Thanks.

[ame]

Code: Select all

import json
decoded = json.loads(jsondata)
print decoded['songid'], decoded['state']

Sorry, Dougie, but this is simply nonsense. Why should anybody use Json inside Python to "decode" a simple Python dictionary,

It walks like JSON, it quacks like JSON, why not decode it like JSON?

Because it's a dict. It's already 'decoded' and trivial to access.

[KenT]

Code: Select all

import json
decoded = json.loads(jsondata)
print decoded['songid'], decoded['state']

Sorry, Dougie, but this is simply nonsense. Why should anybody use Json inside Python to "decode" a simple Python dictionary,

It walks like JSON, it quacks like JSON, why not decode it like JSON?

http://json.org/

However JSON quacks twice, this quacks only once . JSON insists on " rather than '. I got caught by that one only yesterday.

Its a printout of a python dictionary

[paddyg]

similar but different:
1. data is a dictionary object
>>> data
{'songid': '28', 'playlistlength': '1', 'playlist': '32', 'repeat': '0', 'consume': '0', 'mixrampdb': '0.000000', 'random': '0', 'state': 'play', 'xfade': '0', 'volume': '-1', 'single': '1', 'mixrampdelay': 'nan', 'time': '228:429', 'song': '0', 'elapsed': '228.473', 'bitrate': '128', 'audio': '44100:24:2'}
2. data is json.dumps(dictionary object)
>>> data
'{"songid": "28", "playlistlength": "1", "playlist": "32", "repeat": "0", "consume": "0", "mixrampdb": "0.000000", "random": "0", "state": "play", "xfade": "0", "volume": "-1", "single": "1", "mixrampdelay": "nan", "time": "228:429", "song": "0", "elapsed": "228.473", "bitrate": "128", "audio": "44100:24:2"}'