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june7exercise.py
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# In Python, create the following dictionary containing data about a playlist from Soundcloud:
playlist_data = {
"kind": "playlist",
"id": 405726,
"created_at": "2010/11/02 09:24:50 +0000",
"user_id": 3207,
"sharing": "public",
"tag_list": "",
"permalink": "field-recordings",
"streamable": True,
"downloadable": True,
"embeddable_by": "me",
"purchase_url": None,
"label_id": None,
"type": "other",
"playlist_type": "other",
"ean": "",
"description": "a couple of field recordings to test http://soundiverse.com.\r\n\r\nrecorded with the fire recorder: http://soundcloud.com/apps/fire",
"genre": "",
"release": "",
"purchase_title": None,
"label_name": "",
"title": "Field Recordings",
"release_year": None,
"release_month": None,
"release_day": None,
"license": "all-rights-reserved",
"uri": "http://api.soundcloud.com/playlists/405726",
"permalink_url": "http://soundcloud.com/jwagener/sets/field-recordings",
"artwork_url": "http://i1.sndcdn.com/artworks-000025801802-1msl1i-large.jpg?5e64f12",
"user": {
"id": 3207,
"kind": "user",
"permalink": "jwagener",
"username": "Johannes Wagener",
"uri": "http://api.soundcloud.com/users/3207",
"permalink_url": "http://soundcloud.com/jwagener",
"avatar_url": "http://i1.sndcdn.com/avatars-000014428549-3at7qc-large.jpg?5e64f12",
},
"tracks": [
{
"kind": "track",
"id": 6621631,
"created_at": "2010/11/02 09:08:43 +0000",
"user_id": 3207,
"duration_in_milliseconds": 27099,
"commentable": True,
"state": "finished",
"original_content_size": 2382624,
"sharing": "public",
"tag_list": "Fieldrecording geo:lat=52.527544 geo:lon=13.402905",
"permalink": "coffee-machine",
"streamable": True,
"embeddable_by": "all",
"downloadable": False,
"purchase_url": None,
"label_id": None,
"purchase_title": None,
"genre": "",
"title": "coffee machine",
"description": "",
"label_name": "",
"release": "",
"track_type": "",
"key_signature": "",
"isrc": "",
"video_url": None,
"bpm": None,
"release_year": None,
"release_month": None,
"release_day": None,
"original_format": "wav",
"license": "cc-by",
"uri": "http://api.soundcloud.com/tracks/6621631",
"user": {
"id": 3207,
"kind": "user",
"permalink": "jwagener",
"username": "Johannes Wagener",
"uri": "http://api.soundcloud.com/users/3207",
"permalink_url": "http://soundcloud.com/jwagener",
"avatar_url": "http://i1.sndcdn.com/avatars-000014428549-3at7qc-large.jpg?5e64f12",
},
"permalink_url": "http://soundcloud.com/jwagener/coffee-machine",
"artwork_url": "http://i1.sndcdn.com/artworks-000002863219-4zpxc0-large.jpg?5e64f12",
"waveform_url": "http://w1.sndcdn.com/Yva1Qimi7TVd_m.png",
"stream_url": "http://api.soundcloud.com/tracks/6621631/stream",
"playback_count": 1249,
"download_count": 114,
"favoritings_count": 14,
"comment_count": 11,
"attachments_uri": "http://api.soundcloud.com/tracks/6621631/attachments",
},
{
"kind": "track",
"id": 6621549,
"created_at": "2010/11/02 09:00:23 +0000",
"user_id": 3207,
"duration_in_milliseconds": 65618,
"commentable": True,
"state": "finished",
"original_content_size": 5780256,
"sharing": "public",
"tag_list": "Fieldrecording geo:lat=52.528181 geo:lon=13.412658",
"permalink": "tram-in-berlin",
"streamable": True,
"embeddable_by": "all",
"downloadable": True,
"purchase_url": None,
"label_id": None,
"purchase_title": None,
"genre": "",
"title": "tram in berlin",
"description": "",
"label_name": "",
"release": "",
"track_type": "recording",
"key_signature": "",
"isrc": "",
"video_url": None,
"bpm": None,
"release_year": None,
"release_month": None,
"release_day": None,
"original_format": "wav",
"license": "cc-by",
"uri": "http://api.soundcloud.com/tracks/6621549",
"user": {
"id": 3207,
"kind": "user",
"permalink": "jwagener",
"username": "Johannes Wagener",
"uri": "http://api.soundcloud.com/users/3207",
"permalink_url": "http://soundcloud.com/jwagener",
"avatar_url": "http://i1.sndcdn.com/avatars-000014428549-3at7qc-large.jpg?5e64f12",
},
"permalink_url": "http://soundcloud.com/jwagener/tram-in-berlin",
"artwork_url": "http://i1.sndcdn.com/artworks-000002863163-6f2aqe-large.jpg?5e64f12",
"waveform_url": "http://w1.sndcdn.com/u04ibjx6FYdM_m.png",
"stream_url": "http://api.soundcloud.com/tracks/6621549/stream",
"download_url": "http://api.soundcloud.com/tracks/6621549/download",
"playback_count": 578,
"download_count": 93,
"favoritings_count": 4,
"comment_count": 3,
"attachments_uri": "http://api.soundcloud.com/tracks/6621549/attachments",
},
{
"kind": "track",
"id": 6668072,
"created_at": "2010/11/03 19:47:11 +0000",
"user_id": 3207,
"duration_in_milliseconds": 21871,
"commentable": True,
"state": "finished",
"original_content_size": 1921800,
"sharing": "public",
"tag_list": "geo:lat=52.527529 geo:lon=13.402961",
"permalink": "alex-playing-drums",
"streamable": True,
"embeddable_by": "all",
"downloadable": True,
"purchase_url": None,
"label_id": None,
"purchase_title": None,
"genre": None,
"title": "alex playing drums",
"description": "",
"label_name": "",
"release": "",
"track_type": "recording",
"key_signature": "",
"isrc": "",
"video_url": None,
"bpm": None,
"release_year": None,
"release_month": None,
"release_day": None,
"original_format": "wav",
"license": "cc-by",
"uri": "http://api.soundcloud.com/tracks/6668072",
"user": {
"id": 3207,
"kind": "user",
"permalink": "jwagener",
"username": "Johannes Wagener",
"uri": "http://api.soundcloud.com/users/3207",
"permalink_url": "http://soundcloud.com/jwagener",
"avatar_url": "http://i1.sndcdn.com/avatars-000014428549-3at7qc-large.jpg?5e64f12",
},
"permalink_url": "http://soundcloud.com/jwagener/alex-playing-drums",
"artwork_url": "http://i1.sndcdn.com/artworks-000002888918-takbu6-large.jpg?5e64f12",
"waveform_url": "http://w1.sndcdn.com/MQnxWxIH94ai_m.png",
"stream_url": "http://api.soundcloud.com/tracks/6668072/stream",
"download_url": "http://api.soundcloud.com/tracks/6668072/download",
"playback_count": 400,
"download_count": 84,
"favoritings_count": 2,
"comment_count": 1,
"attachments_uri": "http://api.soundcloud.com/tracks/6668072/attachments",
},
{
"kind": "track",
"id": 6698933,
"created_at": "2010/11/04 19:09:32 +0000",
"user_id": 3207,
"duration_in_milliseconds": 12726,
"commentable": True,
"state": "finished",
"original_content_size": 1116936,
"sharing": "public",
"tag_list": "geo:lat=52.528450 geo:lon=13.404099",
"permalink": "typing",
"streamable": True,
"embeddable_by": "all",
"downloadable": False,
"purchase_url": None,
"label_id": None,
"purchase_title": None,
"genre": None,
"title": "typing",
"description": "",
"label_name": "",
"release": "",
"track_type": "recording",
"key_signature": "",
"isrc": "",
"video_url": None,
"bpm": None,
"release_year": None,
"release_month": None,
"release_day": None,
"original_format": "wav",
"license": "cc-by",
"uri": "http://api.soundcloud.com/tracks/6698933",
"user": {
"id": 3207,
"kind": "user",
"permalink": "jwagener",
"username": "Johannes Wagener",
"uri": "http://api.soundcloud.com/users/3207",
"permalink_url": "http://soundcloud.com/jwagener",
"avatar_url": "http://i1.sndcdn.com/avatars-000014428549-3at7qc-large.jpg?5e64f12",
},
"permalink_url": "http://soundcloud.com/jwagener/typing",
"artwork_url": "http://i1.sndcdn.com/artworks-000002903990-le6t7d-large.jpg?5e64f12",
"waveform_url": "http://w1.sndcdn.com/ZSil4IqhP6Hh_m.png",
"stream_url": "http://api.soundcloud.com/tracks/6698933/stream",
"playback_count": 1151,
"download_count": 102,
"favoritings_count": 1,
"comment_count": 0,
"attachments_uri": "http://api.soundcloud.com/tracks/6698933/attachments",
},
{
"kind": "track",
"id": 6770077,
"created_at": "2010/11/07 02:45:11 +0000",
"user_id": 3207,
"duration_in_milliseconds": 27202,
"commentable": True,
"state": "finished",
"original_content_size": 2392840,
"sharing": "public",
"tag_list": "geo:lat=52.531203 geo:lon=13.412165",
"permalink": "bassy",
"streamable": True,
"embeddable_by": "all",
"downloadable": True,
"purchase_url": None,
"label_id": None,
"purchase_title": None,
"genre": "",
"title": "bassy",
"description": "",
"label_name": "",
"release": "",
"track_type": "recording",
"key_signature": "",
"isrc": "",
"video_url": None,
"bpm": None,
"release_year": None,
"release_month": None,
"release_day": None,
"original_format": "wav",
"license": "cc-by",
"uri": "http://api.soundcloud.com/tracks/6770077",
"user": {
"id": 3207,
"kind": "user",
"permalink": "jwagener",
"username": "Johannes Wagener",
"uri": "http://api.soundcloud.com/users/3207",
"permalink_url": "http://soundcloud.com/jwagener",
"avatar_url": "http://i1.sndcdn.com/avatars-000014428549-3at7qc-large.jpg?5e64f12",
},
"permalink_url": "http://soundcloud.com/jwagener/bassy",
"artwork_url": "http://i1.sndcdn.com/artworks-000002938592-960ejc-large.jpg?5e64f12",
"waveform_url": "http://w1.sndcdn.com/bxaiyNJt3vWK_m.png",
"stream_url": "http://api.soundcloud.com/tracks/6770077/stream",
"download_url": "http://api.soundcloud.com/tracks/6770077/download",
"playback_count": 335,
"download_count": 78,
"favoritings_count": 1,
"comment_count": 1,
"attachments_uri": "http://api.soundcloud.com/tracks/6770077/attachments",
},
],
}
# Explore the structure of the dictionary using .keys().
print(playlist_data.keys())
# dict_keys(['kind', 'id', 'created_at', 'user_id', 'sharing', 'tag_list', 'permalink', 'streamable', 'downloadable', 'embeddable_by', 'purchase_url', 'label_id', 'type', 'playlist_type', 'ean', 'description', 'genre', 'release', 'purchase_title', 'label_name', 'title', 'release_year', 'release_month', 'release_day', 'license', 'uri', 'permalink_url', 'artwork_url', 'user', 'tracks'])
# How many tracks are in this playlist? Save this value in a variable.
track_count = len(playlist_data['tracks'])
print(track_count)
# Answer = 5
# What is the total duration of the playlist? Save this value in a variable.
# Find keys of each dictionary in track list
for track in playlist_data['tracks']:
print(track.keys())
dict_keys(['kind', 'id', 'created_at', 'user_id', 'duration_in_milliseconds', 'commentable', 'state', 'original_content_size', 'sharing', 'tag_list', 'permalink', 'streamable', 'embeddable_by', 'downloadable', 'purchase_url', 'label_id', 'purchase_title', 'genre', 'title', 'description', 'label_name', 'release', 'track_type', 'key_signature', 'isrc', 'video_url', 'bpm', 'release_year', 'release_month', 'release_day', 'original_format', 'license', 'uri', 'user', 'permalink_url', 'artwork_url', 'waveform_url', 'stream_url', 'playback_count', 'download_count', 'favoritings_count', 'comment_count', 'attachments_uri'])
# Sum up total duration of each track
total_duration_in_milliseconds = 0
for track in playlist_data['tracks']:
total_duration_in_milliseconds += track['duration_in_milliseconds']
total_duration_in_minutes = total_duration_in_milliseconds / 1000 / 60
print(total_duration_in_milliseconds)
print(total_duration_in_minutes)