Vérifiez si le JSON (la propriété d'objet existe) et imprimez-le en décodage Unicode
J'obtiens les données suivantes de API Instagram , j'essaye d'obtenir le texte property de caption en utilisant le code suivant:
data = simplejson.load(info) # info is retrieved using the urllib2
for post in data['data']:
if post['caption'] is not "null":
try:
post['caption']['text']
except NameError:
post['caption']['text'] = 0
if post['caption']['text'] is not 0:
print post['caption']['text']
Mais je reçois toujours le TypeError: 'NoneType' object has no attribute '__getitem__' erreur + UnicodeEncodeError: 'charmap' codec can't encode characters in position 0-5: cha racter maps to <undefined> erreur lors de l'impression des chaînes unicode
Voici les données JSON qui sont récupérées et stockées dans info
{
"pagination":{
"next_url":"https:\/\/api.instagram.com\/v1\/users\/self\/feed?access_token=184046392.f59def8.c5726b469ad2462f85c7cea5f72083c0&count=3&max_id=247821697921944007_6064449",
"next_max_id":"247821697921944007_6064449"
},
"meta":{
"code":200
},
"data":[
{
"attribution":null,
"tags":[
"usausausa",
"olympics"
],
"type":"image",
"location":{
"latitude":37.785929,
"name":"Aquatech Swim School",
"longitude":-122.278718,
"id":16343815
},
"comments":{
"count":0,
"data":[
]
},
"filter":"Valencia",
"created_time":"1343765260",
"link":"http:\/\/instagr.am\/p\/NwhEktJvEp\/",
"likes":{
"count":0,
"data":[
]
},
"images":{
"low_resolution":{
"url":"http:\/\/distilleryimage1.s3.amazonaws.com\/61d9cbeedb4b11e1b8e822000a1e8b8e_6.jpg",
"width":306,
"height":306
},
"thumbnail":{
"url":"http:\/\/distilleryimage1.s3.amazonaws.com\/61d9cbeedb4b11e1b8e822000a1e8b8e_5.jpg",
"width":150,
"height":150
},
"standard_resolution":{
"url":"http:\/\/distilleryimage1.s3.amazonaws.com\/61d9cbeedb4b11e1b8e822000a1e8b8e_7.jpg",
"width":612,
"height":612
}
},
"caption":{
"created_time":"1343765325",
"text":"Part of my job to watch swimming. #olympics #USAUSAUSA",
"from":{
"username":"kissinkatkelly",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_4672491_75sq_1341713095.jpg",
"id":"4672491",
"full_name":"kissinkatkelly"
},
"id":"247843973390332239"
},
"user_has_liked":false,
"id":"247843429330383145_4672491",
"user":{
"username":"kissinkatkelly",
"website":"",
"bio":"I sing the body electric\r\n\r\nBay Area, CA",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_4672491_75sq_1341713095.jpg",
"full_name":"kissinkatkelly",
"id":"4672491"
}
},
{
"attribution":null,
"tags":[
],
"type":"image",
"location":{
"latitude":36.020832061,
"longitude":-121.548835754
},
"comments":{
"count":4,
"data":[
{
"created_time":"1343763343",
"text":"I wanna cut your mustache off. \ue313\ue313\ue313\ue004",
"from":{
"username":"glorias_noodles",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_24432017_75sq_1343633079.jpg",
"id":"24432017",
"full_name":"\ue340MeGusta Gloria\ue340"
},
"id":"247827343962686703"
},
{
"created_time":"1343763844",
"text":"Ahaha^",
"from":{
"username":"chloe_carter",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_44766575_75sq_1343509145.jpg",
"id":"44766575",
"full_name":"Chloe Carter"
},
"id":"247831551235474746"
},
{
"created_time":"1343763958",
"text":"Amazingg thoo",
"from":{
"username":"saulyp",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_18051263_75sq_1335648741.jpg",
"id":"18051263",
"full_name":"Saul Perez"
},
"id":"247832506790200642"
},
{
"created_time":"1343764298",
"text":"@popesaintvictor where is that? :o",
"from":{
"username":"youknow_jameson",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_194001394_75sq_1343613135.jpg",
"id":"194001394",
"full_name":"Jameson Medina"
},
"id":"247835358103225704"
}
]
},
"filter":"Normal",
"created_time":"1343763202",
"link":"http:\/\/instagr.am\/p\/NwdJRpBkfX\/",
"likes":{
"count":611,
"data":[
{
"username":"jakyvedder",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_18148021_75sq_1336938690.jpg",
"id":"18148021",
"full_name":"Janycken"
},
{
"username":"nadjasinbruker",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_174576513_75sq_1343582260.jpg",
"id":"174576513",
"full_name":"Nadja"
},
{
"username":"vivi11",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_1193390_75sq_1338169730.jpg",
"id":"1193390",
"full_name":"Viviana Rodriguez"
},
{
"username":"me_4_eva",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_181498114_75sq_1343506811.jpg",
"id":"181498114",
"full_name":"Kelly"
},
{
"username":"roxczajkowski",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_9367244_75sq_1343696914.jpg",
"id":"9367244",
"full_name":"Czajkowski \u041a\u043e\u0440\u0448\u0443\u043d\u043e\u0432\u0430"
},
{
"username":"arsi1989",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_201586134_75sq_1343761866.jpg",
"id":"201586134",
"full_name":"Arsalan MemOn"
},
{
"username":"puppyluva",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_201579504_75sq_1343760137.jpg",
"id":"201579504",
"full_name":"puppyluva"
},
{
"username":"paulinamurr",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_49364097_75sq_1343428499.jpg",
"id":"49364097",
"full_name":"Paulina Murray"
},
{
"username":"_mcquadeface_",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_20679753_75sq_1327617901.jpg",
"id":"20679753",
"full_name":"Emily McQuade"
}
]
},
"images":{
"low_resolution":{
"url":"http:\/\/distilleryimage11.s3.amazonaws.com\/96cd5b90db4611e1827612313814176c_6.jpg",
"width":306,
"height":306
},
"thumbnail":{
"url":"http:\/\/distilleryimage11.s3.amazonaws.com\/96cd5b90db4611e1827612313814176c_5.jpg",
"width":150,
"height":150
},
"standard_resolution":{
"url":"http:\/\/distilleryimage11.s3.amazonaws.com\/96cd5b90db4611e1827612313814176c_7.jpg",
"width":612,
"height":612
}
},
"caption":null,
"user_has_liked":false,
"id":"247826160271378391_605400",
"user":{
"username":"popesaintvictor",
"website":"http:\/\/popesaintvictor.com",
"bio":"artist, friend, and brand designer for blood:water mission in nashville, tennessee. \r\n\r\nhusband to @ohsoamy\r\n\r\nbe inspired. be awesome.\r\n",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_605400_75sq_1342893414.jpg",
"full_name":"pope saint victor",
"id":"605400"
}
},
{
"attribution":null,
"tags":[
],
"type":"image",
"location":{
"latitude":40.738834381,
"longitude":-73.994163513
},
"comments":{
"count":6,
"data":[
{
"created_time":"1343762733",
"text":"Nice :)",
"from":{
"username":"belieberpernille99",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_186196238_75sq_1341347304.jpg",
"id":"186196238",
"full_name":"official belieber"
},
"id":"247822232418879860"
},
{
"created_time":"1343762748",
"text":"Those pants \ud83d\ude0d",
"from":{
"username":"morganmarzulli",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_29155556_75sq_1337653621.jpg",
"id":"29155556",
"full_name":"morganmarzulli"
},
"id":"247822351461615990"
},
{
"created_time":"1343762777",
"text":"That outfit is to die for. I love her pants! They're so fun. \ud83d\udc4d",
"from":{
"username":"ninavnegron",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_18421926_75sq_1343356820.jpg",
"id":"18421926",
"full_name":"Nina V"
},
"id":"247822600452278654"
},
{
"created_time":"1343762782",
"text":"YEAH THEIR COOL",
"from":{
"username":"belieberpernille99",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_186196238_75sq_1341347304.jpg",
"id":"186196238",
"full_name":"official belieber"
},
"id":"247822639375419775"
},
{
"created_time":"1343762782",
"text":"Another day another shoot! Look out for me and my chicest staff on @racked!",
"from":{
"username":"rebeccaminkoff",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_6064449_75sq_1332274636.jpg",
"id":"6064449",
"full_name":"Rebecca Minkoff"
},
"id":"247822641497737600"
},
{
"created_time":"1343764430",
"text":"Hot mama! Miss you!",
"from":{
"username":"ashleekoston",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_12925089_75sq_1340081366.jpg",
"id":"12925089",
"full_name":"ashleekoston"
},
"id":"247836463642020446"
}
]
},
"filter":"Walden",
"created_time":"1343762670",
"link":"http:\/\/instagr.am\/p\/NwcIVwRYnH\/",
"likes":{
"count":528,
"data":[
{
"username":"claireyoung48",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_40091175_75sq_1338778945.jpg",
"id":"40091175",
"full_name":"claireyoung48"
},
{
"username":"l_christine_k",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_14871166_75sq_1341962995.jpg",
"id":"14871166",
"full_name":"Lauren Kawano"
},
{
"username":"grcdaly",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_41426567_75sq_1335023058.jpg",
"id":"41426567",
"full_name":"\u24bc\u24c7\u24b6\u24b8\u24ba \u24b9\u24b6\u24c1\u24e8"
},
{
"username":"vanessaalcalaa",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_18115905_75sq_1342828120.jpg",
"id":"18115905",
"full_name":"Vanessa Alcala"
},
{
"username":"makennalenover",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_6464394_75sq_1343268613.jpg",
"id":"6464394",
"full_name":"Makenna Lenover"
},
{
"username":"heyitsmaryanne",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_623979_75sq_1340838647.jpg",
"id":"623979",
"full_name":"Maryanne L"
},
{
"username":"sarabeen",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/anonymousUser.jpg",
"id":"6463387",
"full_name":"sarabeen"
},
{
"username":"boldincrimson",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_191122242_75sq_1341889110.jpg",
"id":"191122242",
"full_name":"Pilar Chapa"
},
{
"username":"elizzabethhope",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_6761399_75sq_1342553102.jpg",
"id":"6761399",
"full_name":"Lizz\u270c"
}
]
},
"images":{
"low_resolution":{
"url":"http:\/\/distilleryimage7.s3.amazonaws.com\/59bc708edb4511e1b7ea22000a1cbb16_6.jpg",
"width":306,
"height":306
},
"thumbnail":{
"url":"http:\/\/distilleryimage7.s3.amazonaws.com\/59bc708edb4511e1b7ea22000a1cbb16_5.jpg",
"width":150,
"height":150
},
"standard_resolution":{
"url":"http:\/\/distilleryimage7.s3.amazonaws.com\/59bc708edb4511e1b7ea22000a1cbb16_7.jpg",
"width":612,
"height":612
}
},
"caption":null,
"user_has_liked":false,
"id":"247821697921944007_6064449",
"user":{
"username":"rebeccaminkoff",
"website":"http:\/\/www.rebeccaminkoff.com",
"bio":"The Downtown Romantic. My life, my work, my world.",
"profile_picture":"http:\/\/images.instagram.com\/profiles\/profile_6064449_75sq_1332274636.jpg",
"full_name":"Rebecca Minkoff",
"id":"6064449"
}
}
]
}
Vous n'avez pas besoin des tests complexes pour savoir si le "texte" est présent pour la légende du message. Ce code fonctionne bien avec la chaîne JSON que vous avez publiée:
for post in data['data']:
if post.get('caption'):
print post['caption'].get('text', 0)
De plus, vous pourriez être plus défensif et faire référence à data.get('data', []) lors du démarrage de la boucle au cas où Instagram vous enverrait du JSON vide.
Fondamentalement, lorsque json charge et désérialise votre objet, null en JSON deviendra None en python.
Donc votre ligne de:
if post['caption'] is not 'null':
Devraient devenir:
if post['caption']: