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September 8, 2018 20:43
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Download Transcriptions from Youtube playlist
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import requests | |
import json | |
import pandas as pd | |
from pandas.io.json import json_normalize #package for flattening json in pandas df | |
from xml.etree import ElementTree | |
from pandas.io.json import json_normalize | |
import sys | |
YT_API_KEY = '{youtube_api_key}' | |
playlist_id = '{playlist_id}' | |
results = [] | |
def load_playlist(api_key, playlist_id, next_page_token=None): | |
print("loading playlist next_page_token:", next_page_token) | |
url = "https://www.googleapis.com/youtube/v3/playlistItems" | |
querystring = { | |
"part":"snippet", | |
"maxResults":"50", | |
"playlistId":playlist_id, | |
"key":api_key | |
} | |
if next_page_token is not None: | |
querystring['pageToken'] = next_page_token | |
response = requests.request("GET", url, params=querystring) | |
json = response.json() | |
items = json['items'] | |
for item in items: | |
video_id = item['snippet']['resourceId']['videoId'] | |
item['transcript'] = load_transcript(video_id) | |
results.append(items) | |
if 'nextPageToken' in json: | |
load_playlist(api_key, playlist_id, json['nextPageToken']) | |
return results | |
def load_transcript(video_id): | |
print("download transcript video_id: {}".format(video_id)) | |
url = "http://video.google.com/timedtext" | |
querystring = { | |
"lang":"en", | |
"v":video_id | |
} | |
# print("load video",video_id) | |
response = requests.request("GET", url, params=querystring) | |
if not response.ok: | |
print("could not get transcript for {} !200".format(video_id)) | |
return '' | |
try: | |
transcript = '' | |
tree = ElementTree.fromstring(response.text) | |
for elem in tree: | |
transcript += elem.text + " " | |
return transcript | |
except: | |
print("could not get transcript for {} xml parse error".format(video_id)) | |
return '' | |
def main(api_key=YT_API_KEY, playlist_id=playlist_id): | |
json_results = load_playlist(api_key, playlist_id) | |
#flatten the list | |
flat_list = [] | |
for sublist in json_results: | |
for item in sublist: | |
flat_list.append(item) | |
#convert to dataframe | |
df = json_normalize(flat_list) | |
#save the dataframe as csv | |
df.to_csv('test.csv') | |
print("file saved") | |
if __name__ == '__main__': | |
main(api_key=YT_API_KEY, playlist_id=playlist_id) |
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