我有一本這樣的字典：
{"message":"{\"_\":\"user\",\"pFlags\":{\"contact\":true},\"flags\":2175,\"id\":379951860,\"access_hash\":\"6967195540985199805\",\"first_name\":\"????\",\"last_name\":\"??????\",\"username\":\"mramtd2\",\"phone\":\"989157145632\",\"photo\":{\"_\":\"userProfilePhoto\",\"photo_id\":\"1631880813210609625\",\"photo_small\":{\"_\":\"fileLocation\",\"dc_id\":4,\"volume_id\":\"448413446\",\"local_id\":476387,\"secret\":\"655623158723369503\"},\"photo_big\":{\"_\":\"fileLocation\",\"dc_id\":4,\"volume_id\":\"448413446\",\"local_id\":476389,\"secret\":\"13993366131879811943\"}},\"status\":{\"_\":\"userStatusOffline\",\"was_online\":1558046876}}","phone":"989157145632","@version":"1","typ":"telegram_contacts","access_hash":"6967195540985199805","id":379951860,"@timestamp":"2020-01-26T13:50:12.793Z","path":"/home/user/mirror_01/users_5d65f610ec18aa615a5f580c.log","username":"mramtd2","type":"redis","flags":2175,"host":"ubuntu","imported_from":"telegram_contacts"}
如何從此字典中提取first_name、、last_name和值？idphone
uj5u.com熱心網友回復：
此外，假設您的檔案有新行分隔的字典，使用下面的代碼解決了這個問題：
import json
fo = open(r"C:\Users\Downloads\test.txt", "r")
for each_line in fo.readlines():
print(json.loads(json.loads(each_line)['message'])['first_name'])
print(json.loads(json.loads(each_line)['message'])['last_name'])
print(json.loads(json.loads(each_line)['message'])['id'])
print(json.loads(json.loads(each_line)['message'])['phone'])
uj5u.com熱心網友回復：
import json
# I have assumed your dictionary like that
data = {"message":"{\"_\":\"user\",\"pFlags\":{\"contact\":true},\"flags\":2175,\"id\":379951860,\"access_hash\":\"6967195540985199805\",\"first_name\":\"????\",\"last_name\":\"??????\",\"username\":\"mramtd2\",\"phone\":\"989157145632\",\"photo\":{\"_\":\"userProfilePhoto\",\"photo_id\":\"1631880813210609625\",\"photo_small\":{\"_\":\"fileLocation\",\"dc_id\":4,\"volume_id\":\"448413446\",\"local_id\":476387,\"secret\":\"655623158723369503\"},\"photo_big\":{\"_\":\"fileLocation\",\"dc_id\":4,\"volume_id\":\"448413446\",\"local_id\":476389,\"secret\":\"13993366131879811943\"}},\"status\":{\"_\":\"userStatusOffline\",\"was_online\":1558046876}}","phone":"989157145632","@version":"1","typ":"telegram_contacts","access_hash":"6967195540985199805","id":379951860,"@timestamp":"2020-01-26T13:50:12.793Z","path":"/home/user/mirror_01/users_5d65f610ec18aa615a5f580c.log","username":"mramtd2","type":"redis","flags":2175,"host":"ubuntu","imported_from":"telegram_contacts"}
# The data in "message" need to be loaded on JSON format to access it.
data["message"] = json.loads(data["message"])
# Now, you can print or whatever you want with all the data
print(data["message"]["id"])
print(data["message"]["first_name"])
print(data["message"]["last_name"])
print(data["message"]["phone"]) # There is phone info both in data["message"]["phone"] and data["phone"]. They are identical. You can use whichever you want.
# Optional
# If you want, you can assign data["message"] to a variable.
finalData = data["message"]
# Then you can access the info that you need from finalData
print(finalData["first_name"])
uj5u.com熱心網友回復：
您應該使用 eg 將字串轉換為字典json.loads。然后從普通的嵌套字典中提取。
例子：
import json
message = mydict["message"]
message_dict = json.loads(message)
message_dict['id']
mydict您給定的輸入字典在哪里。
如果您的代碼段顯示檔案的內容，您可以執行以下操作：
with open(filepath) as file:
mydict = json.load(file)
message_dict = mydict["message"]
message_dict['id']
uj5u.com熱心網友回復：
試過你的問題，下面的代碼解決了你的問題：
` import json str1 = r'{"message":"{" ":"user","pFlags":{"contact":true},"flags":2175,"id":379951860,"access_hash":" 6967195540985199805","first_name":"????","last_name":"??????","username":"mramtd2","phone":"989157145632","photo":{" ":"userProfilePhoto","photo_id" :"1631880813210609625","photo_small":{" ":"fileLocation","dc_id":4,"volume_id":"448413446","local_id":476387,"secret":"655623158723369503"},"photo_big": {"":"fileLocation","dc_id":4,"volume_id":"448413446","local_id":476389,"secret":"13993366131879811943"}},"status":{"_":"userStatusOffline"," was_online":1558046876}}","phone":"989157145632","@version":"1","typ":"telegram_contacts","access_hash":"6967195540985199805","id":379951860,"@timestamp ":"2020-01-26T13:50:12.793Z","path":"/home/user/mirror_01/users_5d65f610ec18aa615a5f580c.log","username":"mramtd2","type":"redis","flags ":2175,"host":"ubuntu","imported_from":"telegram_contacts"}'
print(json.loads(json.loads(str1)['message'])['first_name'])
print(json.loads(json.loads(str1)['message'])['last_name'])
print(json.loads(json.loads(str1)['message'])['id'])
print(json.loads(json.loads(str1)['message'])['phone'])`
uj5u.com熱心網友回復：
這是另一種方法：
import json
D = {"message":"{\"_\":\"user\",\"pFlags\":{\"contact\":true},\"flags\":2175,\"id\":379951860,\"access_hash\":\"6967195540985199805\",\"first_name\":\"????\",\"last_name\":\"??????\",\"username\":\"mramtd2\",\"phone\":\"989157145632\",\"photo\":{\"_\":\"userProfilePhoto\",\"photo_id\":\"1631880813210609625\",\"photo_small\":{\"_\":\"fileLocation\",\"dc_id\":4,\"volume_id\":\"448413446\",\"local_id\":476387,\"secret\":\"655623158723369503\"},\"photo_big\":{\"_\":\"fileLocation\",\"dc_id\":4,\"volume_id\":\"448413446\",\"local_id\":476389,\"secret\":\"13993366131879811943\"}},\"status\":{\"_\":\"userStatusOffline\",\"was_online\":1558046876}}","phone":"989157145632","@version":"1","typ":"telegram_contacts","access_hash":"6967195540985199805","id":379951860,"@timestamp":"2020-01-26T13:50:12.793Z","path":"/home/user/mirror_01/users_5d65f610ec18aa615a5f580c.log","username":"mramtd2","type":"redis","flags":2175,"host":"ubuntu","imported_from":"telegram_contacts"}
data = json.loads(D['message'])
for key in ['first_name', 'last_name', 'phone', 'id']:
print(f'{key} -> {data.get(key, "?")}')
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