轉換雙for循環到列表理解

我有以下的JSON對象：轉換雙for循環到列表理解

{u'trailerAvailable': False, u'number': 10, u'watched': False, u'starringCast': u'Jan Fedder,Anja Nejarri', u'genres': [u'Krimi'], u'title': u'S\xfc\xdfes Jenseits', u'ancestorTitles': [{u'contentType': u'SERIES', u'titleId': u'B00ILY1FWE', u'title': u'Gro\xdfstadtrevier'}, {u'contentType': u'SEASON', u'number': 19, u'titleId': u'B00ILZTVXI', u'title': u'Gro\xdfstadtrevier - Staffel 19'}], u'restricted': False, u'synopsis': u"Dirk Matthies und Katja Metz erhalten einen entscheidenden Tipp, um endlich Hannes Rogolski alias 'die Ziege' zu fassen. Allerdings bringt der schwer kranke Informant dadurch seine Lebensgef\xe4hrtin Hilde in Gefahr.", u'titleId': u'B00ILZOQWE', u'watchCompleted': False, u'creditsStartTimeMillis': 2836000, u'customerReviewsCollectionIncluded': True, u'contentType': u'EPISODE', u'childTitles': [], u'studioOrNetwork': u'ARD', u'amazonRating': {u'count': 0, u'rating': 0.0}, u'watchedPositionMillis': {u'valueMillis': 0}, u'listInfo': [], u'previewAvailable': False, u'subtitles': {u'content': {u'languages': []}, u'preview': {u'languages': []}, u'trailer': {u'languages': []}}, u'restrictions': [], u'regulatoryRating': u'12', u'releaseOrFirstAiringDate': {u'valueFormatted': u'2005-03-21T00:00:00', u'valueDate': 1111363200000000}, u'hasSubtitles': False, u'formats': [{u'hasMobileTrailerEncode': False, u'videoAspectRatio': 0.0, u'offers': [{u'asin': u'B0043YVHMY', u'offerType': u'SUBSCRIPTION', u'buyable': False}, {u'asin': u'B00ILZOQWE', u'price': {u'valueFormatted': u'1,49\u20ac', u'valueLong': 149.0}, u'offerType': u'PURCHASE', u'purchaseButtonText': u'Buy episode - 1,49\u20ac', u'buyable': True}, {u'rentalExpiryTermFromPurchase': {u'valueMillis': 2592000000, u'valueFormatted': u'30 days to start watching'}, u'asin': u'B00QVECS4U', u'rentalExpiryTermFromStart': {u'valueMillis': 86400000, u'valueFormatted': u'24 hours to complete watching'}, u'offerType': u'RENTAL', u'buyable': False}], u'audioFormatTypes': [u'STEREO'], u'videoFormatType': u'SD', u'hasMobileEncode': True, u'images': [{u'heightPx': 0, u'widthPx': 0, u'type': u'COVER_ART_TV', u'uri': u'http://ecx.images-amazon.com/images/I/51a8c53GcjL._UR667,500_V1_PJStripe-Prime-Only-500px,TopLeft,0,0_.jpg'}, {u'heightPx': 0, u'widthPx': 0, u'type': u'COVER_ART_TV', u'uri': u'http://ecx.images-amazon.com/images/I/51a8c53GcjL._UR667,500_V1_PJStripe-Prime-Only-500px,TopLeft,0,0_.jpg'}], u'hasTrailerEncode': False, u'hasEncode': True}, {u'hasMobileTrailerEncode': False, u'videoAspectRatio': 0.0, u'offers': [{u'asin': u'B0043YVHMY', u'offerType': u'SUBSCRIPTION', u'buyable': False}, {u'asin': u'B00ILZOR9Q', u'offerType': u'PURCHASE', u'buyable': False}, {u'rentalExpiryTermFromPurchase': {u'valueMillis': 2592000000, u'valueFormatted': u'30 days to start watching'}, u'asin': u'B00QVFSN0W', u'rentalExpiryTermFromStart': {u'valueMillis': 86400000, u'valueFormatted': u'24 hours to complete watching'}, u'offerType': u'RENTAL', u'buyable': False}], u'audioFormatTypes': [u'STEREO'], u'videoFormatType': u'HD', u'hasMobileEncode': False, u'images': [{u'heightPx': 0, u'widthPx': 0, u'type': u'COVER_ART_TV', u'uri': u'http://ecx.images-amazon.com/images/I/51a8c53GcjL._UR667,500_V1_PJStripe-Prime-Only-500px,TopLeft,0,0_.jpg'}, {u'heightPx': 0, u'widthPx': 0, u'type': u'COVER_ART_TV', u'uri': u'http://ecx.images-amazon.com/images/I/51a8c53GcjL._UR667,500_V1_PJStripe-Prime-Only-500px,TopLeft,0,0_.jpg'}], u'hasTrailerEncode': False, u'hasEncode': False}], u'customerReviewCollection': {u'customerReviews': [], u'customerReviewSummary': {u'totalReviewCount': 0, u'threeStarReviewCount': 0, u'averageOverallRating': 0.0, u'twoStarReviewCount': 0, u'fiveStarReviewCount': 0, u'oneStarReviewCount': 0, u'fourStarReviewCount': 0}}, u'runtime': {u'valueMillis': 2820000, u'valueFormatted': u'47m'}, u'contractID': u'UXSG4'}

我試圖做讓所有的asin S：

possible_episode_ids = [] 
for item in t['formats']: 
    for i in item['offers']: 
     possible_episode_ids.append(i['asin']) 

>>> possible_episode_ids 
[u'B0043YVHMY', u'B00ILZOQWE', u'B00QVECS4U', u'B0043YVHMY', u'B00ILZOR9Q', u'B00QVFSN0W']

我將如何做到這一點有列表理解？

來源

2016-01-20 David542

'[我[ '阿辛']因爲我在標題[ '報價']的項目在T ['formats']]''但你永遠不會使用'item'。 – AChampion

只需複製現有線路：

possible_episode_ids = [ 
    i['asin'] 
    for item in t['formats'] 
    for i in item['offers'] 
]

來源

2016-01-20 02:20:18 phihag

我認爲你有這個倒退。 – TigerhawkT3

@ TigerhawkT3你是對的，我已經更新了我的答案。 – phihag

試試這個：

possible_episode_ids=[offer['asin'] for fmt in t['formats'] for offer in fmt['offers']]

來源

2016-01-20 02:25:31 Kwan

possible_episode_ids = [j['asin'] for i in t['formats'] for j in i['offers']]

來源

2016-01-20 02:28:12 Anoop

轉換雙for循環到列表理解

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