Tôi nhận được dữ liệu sau từ API Instagram, tôi đang cố gắng lấy văn bản property từ caption bằng mã sau:
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']
Nhưng tôi tiếp tục gặp lỗi TypeError: 'NoneType' object has no attribute '__getitem__' + UnicodeEncodeError: 'charmap' codec can't encode characters in position 0-5: cha
racter maps to trong khi in các chuỗi Unicode
Đây là dữ liệu JSON được truy xuất và lưu trữ trong info
{
"pagination":{
"next_url":"\/\/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":"\/\/instagr.am\/p\/NwhEktJvEp\/",
"likes":{
"count":0,
"data":[
]
},
"images":{
"low_resolution":{
"url":"\/\/distilleryimage1.s3.amazonaws.com\/61d9cbeedb4b11e1b8e822000a1e8b8e_6.jpg",
"width":306,
"height":306
},
"thumbnail":{
"url":"\/\/distilleryimage1.s3.amazonaws.com\/61d9cbeedb4b11e1b8e822000a1e8b8e_5.jpg",
"width":150,
"height":150
},
"standard_resolution":{
"url":"\/\/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":"\/\/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":"\/\/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":"\/\/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":"\/\/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":"\/\/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":"\/\/images.instagram.com\/profiles\/profile_194001394_75sq_1343613135.jpg",
"id":"194001394",
"full_name":"Jameson Medina"
},
"id":"247835358103225704"
}
]
},
"filter":"Normal",
"created_time":"1343763202",
"link":"\/\/instagr.am\/p\/NwdJRpBkfX\/",
"likes":{
"count":611,
"data":[
{
"username":"jakyvedder",
"profile_picture":"\/\/images.instagram.com\/profiles\/profile_18148021_75sq_1336938690.jpg",
"id":"18148021",
"full_name":"Janycken"
},
{
"username":"nadjasinbruker",
"profile_picture":"\/\/images.instagram.com\/profiles\/profile_174576513_75sq_1343582260.jpg",
"id":"174576513",
"full_name":"Nadja"
},
{
"username":"vivi11",
"profile_picture":"\/\/images.instagram.com\/profiles\/profile_1193390_75sq_1338169730.jpg",
"id":"1193390",
"full_name":"Viviana Rodriguez"
},
{
"username":"me_4_eva",
"profile_picture":"\/\/images.instagram.com\/profiles\/profile_181498114_75sq_1343506811.jpg",
"id":"181498114",
"full_name":"Kelly"
},
{
"username":"roxczajkowski",
"profile_picture":"\/\/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":"\/\/images.instagram.com\/profiles\/profile_201586134_75sq_1343761866.jpg",
"id":"201586134",
"full_name":"Arsalan MemOn"
},
{
"username":"puppyluva",
"profile_picture":"\/\/images.instagram.com\/profiles\/profile_201579504_75sq_1343760137.jpg",
"id":"201579504",
"full_name":"puppyluva"
},
{
"username":"paulinamurr",
"profile_picture":"\/\/images.instagram.com\/profiles\/profile_49364097_75sq_1343428499.jpg",
"id":"49364097",
"full_name":"Paulina Murray"
},
{
"username":"_mcquadeface_",
"profile_picture":"\/\/images.instagram.com\/profiles\/profile_20679753_75sq_1327617901.jpg",
"id":"20679753",
"full_name":"Emily McQuade"
}
]
},
"images":{
"low_resolution":{
"url":"\/\/distilleryimage11.s3.amazonaws.com\/96cd5b90db4611e1827612313814176c_6.jpg",
"width":306,
"height":306
},
"thumbnail":{
"url":"\/\/distilleryimage11.s3.amazonaws.com\/96cd5b90db4611e1827612313814176c_5.jpg",
"width":150,
"height":150
},
"standard_resolution":{
"url":"\/\/distilleryimage11.s3.amazonaws.com\/96cd5b90db4611e1827612313814176c_7.jpg",
"width":612,
"height":612
}
},
"caption":null,
"user_has_liked":false,
"id":"247826160271378391_605400",
"user":{
"username":"popesaintvictor",
"website":"\/\/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":"\/\/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":"\/\/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":"\/\/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":"\/\/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":"\/\/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":"\/\/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":"\/\/images.instagram.com\/profiles\/profile_12925089_75sq_1340081366.jpg",
"id":"12925089",
"full_name":"ashleekoston"
},
"id":"247836463642020446"
}
]
},
"filter":"Walden",
"created_time":"1343762670",
"link":"\/\/instagr.am\/p\/NwcIVwRYnH\/",
"likes":{
"count":528,
"data":[
{
"username":"claireyoung48",
"profile_picture":"\/\/images.instagram.com\/profiles\/profile_40091175_75sq_1338778945.jpg",
"id":"40091175",
"full_name":"claireyoung48"
},
{
"username":"l_christine_k",
"profile_picture":"\/\/images.instagram.com\/profiles\/profile_14871166_75sq_1341962995.jpg",
"id":"14871166",
"full_name":"Lauren Kawano"
},
{
"username":"grcdaly",
"profile_picture":"\/\/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":"\/\/images.instagram.com\/profiles\/profile_18115905_75sq_1342828120.jpg",
"id":"18115905",
"full_name":"Vanessa Alcala"
},
{
"username":"makennalenover",
"profile_picture":"\/\/images.instagram.com\/profiles\/profile_6464394_75sq_1343268613.jpg",
"id":"6464394",
"full_name":"Makenna Lenover"
},
{
"username":"heyitsmaryanne",
"profile_picture":"\/\/images.instagram.com\/profiles\/profile_623979_75sq_1340838647.jpg",
"id":"623979",
"full_name":"Maryanne L"
},
{
"username":"sarabeen",
"profile_picture":"\/\/images.instagram.com\/profiles\/anonymousUser.jpg",
"id":"6463387",
"full_name":"sarabeen"
},
{
"username":"boldincrimson",
"profile_picture":"\/\/images.instagram.com\/profiles\/profile_191122242_75sq_1341889110.jpg",
"id":"191122242",
"full_name":"Pilar Chapa"
},
{
"username":"elizzabethhope",
"profile_picture":"\/\/images.instagram.com\/profiles\/profile_6761399_75sq_1342553102.jpg",
"id":"6761399",
"full_name":"Lizz\u270c"
}
]
},
"images":{
"low_resolution":{
"url":"\/\/distilleryimage7.s3.amazonaws.com\/59bc708edb4511e1b7ea22000a1cbb16_6.jpg",
"width":306,
"height":306
},
"thumbnail":{
"url":"\/\/distilleryimage7.s3.amazonaws.com\/59bc708edb4511e1b7ea22000a1cbb16_5.jpg",
"width":150,
"height":150
},
"standard_resolution":{
"url":"\/\/distilleryimage7.s3.amazonaws.com\/59bc708edb4511e1b7ea22000a1cbb16_7.jpg",
"width":612,
"height":612
}
},
"caption":null,
"user_has_liked":false,
"id":"247821697921944007_6064449",
"user":{
"username":"rebeccaminkoff",
"website":"\/\/www.rebeccaminkoff.com",
"bio":"The Downtown Romantic. My life, my work, my world.",
"profile_picture":"\/\/images.instagram.com\/profiles\/profile_6064449_75sq_1332274636.jpg",
"full_name":"Rebecca Minkoff",
"id":"6064449"
}
}
]
}
Có phải NULL trong JSON không có trong Python?
Dữ liệu JSON Kiểu một boolean bắt đầu với các chữ cái viết thường.Null là JSON tương đương với Python không có.null is the JSON equivalent of Python None .
Null trong json?
Null Value JSON có một giá trị đặc biệt gọi là NULL có thể được đặt trên bất kỳ loại dữ liệu nào bao gồm mảng, đối tượng, số và loại boolean.JSON has a special value called null which can be set on any type of data including arrays, objects, number and boolean types.
Làm thế nào để Python xử lý JSON NULL?
Sử dụng phương thức json.Loads [] để chuyển đổi các giá trị null json thành không có trong python.JSON.Tải phương thức phân tích chuỗi JSON vào một đối tượng Python gốc. loads[] method to convert JSON NULL values to None in Python. The json. loads method parses a JSON string into a native Python object.
Chuỗi trống có phải là null trong json không?
Có, JSON có giá trị null [thực sự được coi là một giá trị, không phải là sự vắng mặt của giá trị] và chuỗi trống, và chúng khác nhau., and they are different.