from datetime import datetime<\/p>\ndata_with_datetime = {<\/p>\n
"name": "Alice",<\/p>\n
"timestamp": datetime.now()<\/p>\n
}<\/p>\n
def datetime_encoder(obj):<\/p>\n
if isinstance(obj, datetime):<\/p>\n
return obj.isoformat()<\/p>\n
raise TypeError("Object of type datetime is not JSON serializable")<\/p>\n
json_data = json.dumps(data_with_datetime, default=datetime_encoder)<\/p>\n
print(json_data)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u5305\u542b\u65e5\u671f\u548c\u65f6\u95f4\u5bf9\u8c61\u7684\u5b57\u5178\uff0c\u5e76\u521b\u5efa\u4e86\u4e00\u4e2adatetime_encoder<\/code>\u51fd\u6570\u6765\u5904\u7406datetime<\/code>\u5bf9\u8c61\u3002\u7136\u540e\uff0c\u6211\u4eec\u5c06datetime_encoder<\/code>\u51fd\u6570\u4f20\u9012\u7ed9json.dumps()<\/code>\u65b9\u6cd5\u7684default<\/code>\u53c2\u6570\u3002<\/p>\n<\/p>\n\u516b\u3001\u4ece\u6587\u4ef6\u4e2d\u8bfb\u53d6\u548c\u5199\u5165JSON<\/p>\n<\/p>\n
\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u9700\u8981\u5c06\u5b57\u5178\u4fdd\u5b58\u5230\u6587\u4ef6\u4e2d\uff0c\u6216\u8005\u4ece\u6587\u4ef6\u4e2d\u8bfb\u53d6JSON\u6570\u636e\u3002json<\/code>\u6a21\u5757\u63d0\u4f9b\u4e86\u65b9\u4fbf\u7684\u65b9\u6cd5\u6765\u5b9e\u73b0\u8fd9\u4e9b\u64cd\u4f5c\u3002<\/p>\n<\/p>\n# \u5c06\u5b57\u5178\u4fdd\u5b58\u5230\u6587\u4ef6\u4e2d<\/p>\nwith open("data.json", "w") as file:<\/p>\n
json.dump(data, file, indent=4)<\/p>\n
\u4ece\u6587\u4ef6\u4e2d\u8bfb\u53d6JSON\u6570\u636e<\/strong><\/h2>\nwith open("data.json", "r") as file:<\/p>\n
data_from_file = json.load(file)<\/p>\n
print(data_from_file)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528json.dump()<\/code>\u65b9\u6cd5\u5c06\u5b57\u5178\u4fdd\u5b58\u5230\u6587\u4ef6\u4e2d\uff0c\u5e76\u4f7f\u7528json.load()<\/code>\u65b9\u6cd5\u4ece\u6587\u4ef6\u4e2d\u8bfb\u53d6JSON\u6570\u636e\u3002<\/p>\n<\/p>\n\u4e5d\u3001\u5904\u7406\u5d4c\u5957\u5b57\u5178\u548c\u5217\u8868<\/p>\n<\/p>\n
\u5728\u5904\u7406\u5305\u542b\u5d4c\u5957\u5b57\u5178\u548c\u5217\u8868\u7684\u590d\u6742\u6570\u636e\u7ed3\u6784\u65f6\uff0cjson<\/code>\u6a21\u5757\u4e5f\u80fd\u591f\u5f88\u597d\u5730\u5904\u7406\u3002<\/p>\n<\/p>\nnested_data = {<\/p>\n "name": "Alice",<\/p>\n
"age": 25,<\/p>\n
"address": {<\/p>\n
"street": "123 Main St",<\/p>\n
"city": "New York",<\/p>\n
"postal_code": "10001"<\/p>\n
},<\/p>\n
"hobbies": ["reading", "traveling", "swimming"]<\/p>\n
}<\/p>\n
json_data = json.dumps(nested_data, indent=4)<\/p>\n
print(json_data)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u5305\u542b\u5d4c\u5957\u5b57\u5178\u548c\u5217\u8868\u7684\u590d\u6742\u6570\u636e\u7ed3\u6784\uff0c\u5e76\u4f7f\u7528json.dumps()<\/code>\u65b9\u6cd5\u5c06\u5176\u8f6c\u6362\u4e3aJSON\u5b57\u7b26\u4e32\u3002<\/p>\n<\/p>\n\u5341\u3001\u5904\u7406\u5927\u6570\u636e\u548c\u6027\u80fd\u4f18\u5316<\/p>\n<\/p>\n
\u5728\u5904\u7406\u5927\u6570\u636e\u96c6\u65f6\uff0c\u6027\u80fd\u662f\u4e00\u4e2a\u91cd\u8981\u7684\u8003\u8651\u56e0\u7d20\u3002\u53ef\u4ee5\u4f7f\u7528orjson<\/code>\u6216ujson<\/code>\u7b49\u7b2c\u4e09\u65b9\u5e93\u6765\u63d0\u9ad8\u5e8f\u5217\u5316\u548c\u53cd\u5e8f\u5217\u5316\u7684\u6027\u80fd\u3002<\/p>\n<\/p>\nimport orjson<\/p>\ndata = {<\/p>\n
"name": "Alice",<\/p>\n
"age": 25,<\/p>\n
"city": "New York"<\/p>\n
}<\/p>\n
\u4f7f\u7528orjson\u8fdb\u884c\u5e8f\u5217\u5316<\/strong><\/h2>\njson_data = orjson.dumps(data).decode()<\/p>\n
print(json_data)<\/p>\n
\u4f7f\u7528orjson\u8fdb\u884c\u53cd\u5e8f\u5217\u5316<\/strong><\/h2>\ndata_dict = orjson.loads(json_data)<\/p>\n
print(data_dict)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528orjson<\/code>\u5e93\u6765\u63d0\u9ad8\u5e8f\u5217\u5316\u548c\u53cd\u5e8f\u5217\u5316\u7684\u6027\u80fd\u3002<\/p>\n<\/p>\n\u5341\u4e00\u3001\u5904\u7406\u81ea\u5b9a\u4e49\u7c7b\u548c\u6570\u636e\u7ed3\u6784<\/p>\n<\/p>\n
\u5728\u5904\u7406\u81ea\u5b9a\u4e49\u7c7b\u548c\u6570\u636e\u7ed3\u6784\u65f6\uff0c\u53ef\u80fd\u9700\u8981\u5b9a\u4e49\u81ea\u5b9a\u4e49\u7684\u7f16\u7801\u548c\u89e3\u7801\u51fd\u6570\u3002\u53ef\u4ee5\u4f7f\u7528\u7c7b\u7684__dict__<\/code>\u5c5e\u6027\u6765\u83b7\u53d6\u5bf9\u8c61\u7684\u5c5e\u6027\u5b57\u5178\uff0c\u7136\u540e\u5c06\u5176\u8f6c\u6362\u4e3aJSON\u683c\u5f0f\u3002<\/p>\n<\/p>\nclass Person:<\/p>\n def __init__(self, name, age):<\/p>\n
self.name = name<\/p>\n
self.age = age<\/p>\n
def to_json(self):<\/p>\n
return json.dumps(self.__dict__)<\/p>\n
person = Person("Alice", 25)<\/p>\n
json_data = person.to_json()<\/p>\n
print(json_data)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2aPerson<\/code>\u7c7b\uff0c\u5e76\u6dfb\u52a0\u4e86\u4e00\u4e2ato_json<\/code>\u65b9\u6cd5\uff0c\u8be5\u65b9\u6cd5\u4f7f\u7528\u7c7b\u7684__dict__<\/code>\u5c5e\u6027\u5c06\u5bf9\u8c61\u7684\u5c5e\u6027\u5b57\u5178\u8f6c\u6362\u4e3aJSON\u5b57\u7b26\u4e32\u3002<\/p>\n<\/p>\n\u603b\u4e4b\uff0c\u901a\u8fc7\u4f7f\u7528Python\u7684json<\/code>\u6a21\u5757\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u5c06\u5b57\u5178\u8f6c\u6362\u4e3aJSON\u683c\u5f0f\uff0c\u5e76\u5904\u7406\u5404\u79cd\u590d\u6742\u7684\u6570\u636e\u7ed3\u6784\u548c\u81ea\u5b9a\u4e49\u5bf9\u8c61\u3002\u901a\u8fc7\u7ed3\u5408\u4f7f\u7528json.dumps()<\/code>\u3001json.loads()<\/code>\u3001json.dump()<\/code>\u548cjson.load()<\/code>\u65b9\u6cd5\uff0c\u4ee5\u53ca\u81ea\u5b9a\u4e49\u7f16\u7801\u548c\u89e3\u7801\u51fd\u6570\uff0c\u53ef\u4ee5\u6ee1\u8db3\u5927\u591a\u6570JSON\u5904\u7406\u7684\u9700\u6c42\u3002<\/p>\n<\/p>\n\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n \u5982\u4f55\u5728Python\u4e2d\u5c06\u5b57\u5178\u8f6c\u6362\u4e3aJSON\u683c\u5f0f\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684json<\/code>\u6a21\u5757\u8f7b\u677e\u5c06\u5b57\u5178\u8f6c\u6362\u4e3aJSON\u683c\u5f0f\u3002\u901a\u8fc7\u8c03\u7528json.dumps()<\/code>\u51fd\u6570\uff0c\u53ef\u4ee5\u5c06\u5b57\u5178\u5bf9\u8c61\u8f6c\u5316\u4e3aJSON\u5b57\u7b26\u4e32\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\nimport json\n\ndata = {'name': 'Alice', 'age': 30, 'city': 'New York'}\njson_data = json.dumps(data)\nprint(json_data) # \u8f93\u51fa: {"name": "Alice", "age": 30, "city": "New York"}\n<\/code><\/pre>\n\u8f6c\u6362\u4e3aJSON\u683c\u5f0f\u540e\uff0c\u5982\u4f55\u4fdd\u5b58\u5230\u6587\u4ef6\u4e2d\uff1f<\/strong>
\u5982\u679c\u5e0c\u671b\u5c06\u5b57\u5178\u8f6c\u6362\u540e\u7684JSON\u683c\u5f0f\u6570\u636e\u4fdd\u5b58\u5230\u6587\u4ef6\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528json.dump()<\/code>\u65b9\u6cd5\u3002\u8fd9\u6837\u53ef\u4ee5\u76f4\u63a5\u5c06\u6570\u636e\u5199\u5165\u6587\u4ef6\uff0c\u800c\u65e0\u9700\u624b\u52a8\u5904\u7406\u5b57\u7b26\u4e32\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\nimport json\n\ndata = {'name': 'Alice', 'age': 30, 'city': 'New York'}\nwith open('data.json', 'w') as json_file:\n json.dump(data, json_file)\n<\/code><\/pre>\n\u5728\u8f6c\u6362\u8fc7\u7a0b\u4e2d\uff0c\u5982\u4f55\u5904\u7406\u590d\u6742\u6570\u636e\u7c7b\u578b\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u5b57\u5178\u53ef\u80fd\u5305\u542b\u590d\u6742\u7684\u6570\u636e\u7c7b\u578b\uff0c\u5982\u81ea\u5b9a\u4e49\u5bf9\u8c61\u3001\u65e5\u671f\u7b49\u3002\u4e3a\u4e86\u5c06\u8fd9\u4e9b\u7c7b\u578b\u8f6c\u6362\u4e3aJSON\u683c\u5f0f\uff0c\u53ef\u4ee5\u81ea\u5b9a\u4e49\u4e00\u4e2a\u5e8f\u5217\u5316\u51fd\u6570\uff0c\u5e76\u5c06\u5176\u4f20\u9012\u7ed9json.dumps()<\/code>\u6216json.dump()<\/code>\u7684default<\/code>\u53c2\u6570\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u5904\u7406\u81ea\u5b9a\u4e49\u5bf9\u8c61\u7684\u793a\u4f8b\uff1a<\/p>\nimport json\nfrom datetime import datetime\n\nclass Person:\n def __init__(self, name, birthdate):\n self.name = name\n self.birthdate = birthdate\n\ndef serialize(obj):\n if isinstance(obj, datetime):\n return obj.isoformat()\n if isinstance(obj, Person):\n return {'name': obj.name, 'birthdate': obj.birthdate.isoformat()}\n raise TypeError(f'Type {type(obj)} not serializable')\n\nperson = Person('Alice', datetime(1993, 5, 17))\njson_data = json.dumps(person, default=serialize)\nprint(json_data) # \u8f93\u51fa: {"name": "Alice", "birthdate": "1993-05-17T00:00:00"}\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"Python\u5c06\u5b57\u5178\u8f6c\u4e3aJSON\u683c\u5f0f\u7684\u51e0\u79cd\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528json\u6a21\u5757\u3001\u4f7f\u7528json.dumps()\u65b9\u6cd5\u3001\u6ce8\u610f\u7f16\u7801\u548c […]","protected":false},"author":3,"featured_media":1083179,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1083170"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=1083170"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1083170\/revisions"}],"predecessor-version":[{"id":1083180,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1083170\/revisions\/1083180"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1083179"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1083170"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1083170"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1083170"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![\"python\u5982\u4f55\u5c06\u5b57\u5178\u8f6c\u4e3ajson\u683c\u5f0f\"](\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/24193853\/ef085a81-7f25-4859-8ad4-693350d4fc50.webp\")
<\/p>\n