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JSON 转 Python 在线转换器

免费在线 JSON 转 Python 转换器,支持 dataclass、TypedDict 和 Pydantic 模型。

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What is JSON to Python Converter?

This tool automatically converts JSON objects into Python class definitions. It supports three popular Python patterns: Dataclass, TypedDict, and Pydantic BaseModel. Perfect for developers who need to quickly generate Python type definitions from JSON data structures.

Features

  • Automatically detects JSON data types (string, number, boolean, array, object)
  • Generates three Python patterns: Dataclass, TypedDict, and Pydantic BaseModel
  • Converts camelCase keys to snake_case for Python naming conventions
  • Handles nested objects and arrays with proper type annotations
  • Supports Optional types for nullable fields
  • One-click copy functionality for generated Python code

Supported Conversion Modes

  • Dataclass: Uses Python's @dataclass decorator for immutable data structures
  • TypedDict: Uses typing.TypedDict for dictionary-based type hints
  • Pydantic BaseModel: Uses Pydantic for data validation and serialization
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How to Use JSON to Python

  1. Paste or upload your input data into the JSON to Python input area
  2. Select the desired output format or conversion options
  3. Click Convert to transform your data instantly
  4. Copy the converted result or download the output file

Common Use Cases

  • Converting API responses to Python dataclass definitions
  • Generating Pydantic models from JSON schemas
  • Creating TypedDict definitions for type-safe Python code
  • Speeding up Python development with auto-generated models

Frequently Asked Questions

Is JSON to Python free to use?
Yes, JSON to Python is completely free with no signup required. You can use it as many times as you need.
Is my data safe when using JSON to Python?
Absolutely. All processing happens directly in your browser. Your data is never sent to any server or stored anywhere.
What formats does JSON to Python support?
JSON to Python supports the formats described above. Simply paste your input data and the tool will handle the conversion automatically.
Can I convert large files?
Yes, since all processing happens in your browser, you can convert files of any reasonable size. Very large files may take a moment to process.
Will the conversion preserve my data accurately?
Yes, the conversion is lossless and preserves all data accurately. The tool handles edge cases and special characters properly.