add podcasts/create-feed script
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*.xml
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*.json
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"""
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this script creates a feed.xml file based on JSON data of a podcast from apple podcast (itunes) API
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"""
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import json
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from pathlib import Path
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from datetime import datetime, timezone
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from email.utils import format_datetime
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from urllib.parse import urlparse
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import xml.etree.ElementTree as ET
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from xml.dom import minidom
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# sample curl for season episodes details:
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# "id": "1573565122-8",
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# "type": "podcast-seasons",
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# sample curl for channel details
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# "type": "podcasts",
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# "href": "/v1/catalog/us/podcasts/1573565122?l=en-US",
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json_path = Path('season-7-episoded-formatted.json')
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channel_path = Path('channel-details.json')
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output_path = Path('Bibliocast-custom.xml')
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obj = json.loads(json_path.read_text())
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seasons = obj.get('data', [])
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channel_obj = json.loads(channel_path.read_text()) if channel_path.exists() else {}
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channel_data_list = channel_obj.get('data') or []
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channel_attrs = channel_data_list[0].get('attributes', {}) if channel_data_list else {}
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episodes = []
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for season in seasons:
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episodes.extend(season.get('relationships', {}).get('episodes', {}).get('data', []))
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# Sort by releaseDateTime descending (latest first)
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def parse_dt(value):
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if not value:
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return None
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# ISO 8601 with Z
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if value.endswith('Z'):
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value = value.replace('Z', '+00:00')
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try:
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return datetime.fromisoformat(value)
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except ValueError:
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return None
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episodes_sorted = sorted(
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episodes,
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key=lambda ep: parse_dt(ep.get('attributes', {}).get('releaseDateTime')) or datetime.min.replace(tzinfo=timezone.utc),
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reverse=True,
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)
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# Channel-level data (from channel details, fallback to episode data)
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first_attr = episodes_sorted[0]['attributes'] if episodes_sorted else {}
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channel_title = channel_attrs.get('name') or 'Bibliocast'
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artist_name = channel_attrs.get('artistName') or first_attr.get('artistName')
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artwork_url = (channel_attrs.get('artwork') or {}).get('url') or (first_attr.get('artwork') or {}).get('url')
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website_url = channel_attrs.get('websiteUrl') or first_attr.get('websiteUrl')
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base_link = None
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if website_url:
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parsed = urlparse(website_url)
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base_link = f"{parsed.scheme}://{parsed.netloc}/" if parsed.scheme and parsed.netloc else None
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channel_description = None
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desc = channel_attrs.get('description')
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if isinstance(desc, dict):
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channel_description = desc.get('standard') or desc.get('short')
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elif isinstance(desc, str):
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channel_description = desc
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if not channel_description:
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channel_description = 'Custom feed generated from Bibliocast episode data.'
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copyright_text = channel_attrs.get('copyright') or first_attr.get('copyright')
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# genre
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genres = set(channel_attrs.get('genreNames') or [])
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explicit_values = set()
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for ep in episodes_sorted:
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attrs = ep.get('attributes', {})
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for g in (attrs.get('genreNames') or []):
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if g:
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genres.add(g)
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rating = (attrs.get('contentRating') or '').strip().lower()
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if rating:
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explicit_values.add(rating)
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channel_explicit = None
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channel_rating = channel_attrs.get('contentRating')
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if channel_rating:
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channel_rating = channel_rating.strip().lower()
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if channel_rating == 'explicit':
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channel_explicit = 'yes'
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elif channel_rating == 'clean':
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channel_explicit = 'clean'
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elif channel_rating == 'notexplicit':
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channel_explicit = 'no'
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if not channel_explicit:
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if 'explicit' in explicit_values:
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channel_explicit = 'yes'
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elif 'clean' in explicit_values:
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channel_explicit = 'clean'
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channel_release_dt = parse_dt(channel_attrs.get('releaseDateTime'))
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# Namespaces
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itunes_ns = 'http://www.itunes.com/dtds/podcast-1.0.dtd'
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ET.register_namespace('itunes', itunes_ns)
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rss = ET.Element('rss', {'version': '2.0'})
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channel = ET.SubElement(rss, 'channel')
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# Required/standard channel elements
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ET.SubElement(channel, 'title').text = channel_title
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if website_url:
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ET.SubElement(channel, 'link').text = website_url
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elif base_link:
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ET.SubElement(channel, 'link').text = base_link
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if channel_description:
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ET.SubElement(channel, 'description').text = channel_description
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if copyright_text:
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ET.SubElement(channel, 'copyright').text = copyright_text
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if channel_release_dt:
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ET.SubElement(channel, 'lastBuildDate').text = format_datetime(channel_release_dt)
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elif episodes_sorted:
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latest_dt = parse_dt(episodes_sorted[0].get('attributes', {}).get('releaseDateTime'))
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if latest_dt:
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ET.SubElement(channel, 'lastBuildDate').text = format_datetime(latest_dt)
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# iTunes channel elements
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if artist_name:
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ET.SubElement(channel, f'{{{itunes_ns}}}author').text = artist_name
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if channel_explicit:
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ET.SubElement(channel, f'{{{itunes_ns}}}explicit').text = channel_explicit
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if artwork_url:
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ET.SubElement(channel, f'{{{itunes_ns}}}image', {'href': artwork_url})
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# iTunes category (use first genre, if any)
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if genres:
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for genre in sorted(genres):
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ET.SubElement(channel, f'{{{itunes_ns}}}category', {'text': genre})
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# Helpers
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def duration_to_itunes(ms):
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if ms is None:
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return None
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try:
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total_seconds = int(round(ms / 1000))
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except Exception:
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return None
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hours = total_seconds // 3600
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minutes = (total_seconds % 3600) // 60
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seconds = total_seconds % 60
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if hours > 0:
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return f"{hours}:{minutes:02d}:{seconds:02d}"
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return f"{minutes}:{seconds:02d}"
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def rating_to_itunes(value):
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if not value:
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return None
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value = value.strip().lower()
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if value == 'explicit':
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return 'yes'
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if value == 'clean':
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return 'clean'
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if value == 'notexplicit':
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return 'no'
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return None
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for ep in episodes_sorted:
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attrs = ep.get('attributes', {})
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item = ET.SubElement(channel, 'item')
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title = attrs.get('itunesTitle') or attrs.get('name')
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if title:
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ET.SubElement(item, 'title').text = title
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ET.SubElement(item, f'{{{itunes_ns}}}title').text = title
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link = attrs.get('websiteUrl') or attrs.get('url')
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if link:
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ET.SubElement(item, 'link').text = link
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guid = attrs.get('guid')
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if guid:
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guid_el = ET.SubElement(item, 'guid', {'isPermaLink': 'false'})
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guid_el.text = guid
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# Description
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desc = (attrs.get('description') or {}).get('standard') or (attrs.get('description') or {}).get('short')
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if desc:
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ET.SubElement(item, 'description').text = desc
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ET.SubElement(item, f'{{{itunes_ns}}}summary').text = desc
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short_desc = (attrs.get('description') or {}).get('short')
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if short_desc:
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ET.SubElement(item, f'{{{itunes_ns}}}subtitle').text = short_desc
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# Publication date
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release = attrs.get('releaseDateTime')
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release_dt = parse_dt(release)
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if release_dt:
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ET.SubElement(item, 'pubDate').text = format_datetime(release_dt)
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# Enclosure
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asset_url = attrs.get('assetUrl')
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if asset_url:
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ET.SubElement(item, 'enclosure', {'url': asset_url, 'type': 'audio/mpeg'})
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# iTunes fields
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if artist_name:
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ET.SubElement(item, f'{{{itunes_ns}}}author').text = artist_name
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season_number = attrs.get('seasonNumber')
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if season_number is not None:
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ET.SubElement(item, f'{{{itunes_ns}}}season').text = str(season_number)
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episode_number = attrs.get('episodeNumber')
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if episode_number is not None:
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ET.SubElement(item, f'{{{itunes_ns}}}episode').text = str(episode_number)
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duration = duration_to_itunes(attrs.get('durationInMilliseconds'))
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if duration:
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ET.SubElement(item, f'{{{itunes_ns}}}duration').text = duration
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rating = rating_to_itunes(attrs.get('contentRating'))
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if rating:
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ET.SubElement(item, f'{{{itunes_ns}}}explicit').text = rating
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art = (attrs.get('artwork') or {}).get('url')
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if art:
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ET.SubElement(item, f'{{{itunes_ns}}}image', {'href': art})
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# Pretty print
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rough_string = ET.tostring(rss, encoding='utf-8')
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parsed = minidom.parseString(rough_string)
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pretty_xml = parsed.toprettyxml(indent=' ', encoding='utf-8')
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output_path.write_bytes(pretty_xml)
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print(f'Wrote {output_path} with {len(episodes_sorted)} episodes')
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