Python构造JSON请求：如何让timestamp字段为数字类型（无引号）

问题根源 #

你当前代码里通过str()将timestamp值转为字符串，还额外拼接空字符串，导致start_timestamp和end_timestamp成为字符串类型，JSON序列化后自然会带上引号。

修正后的代码 #

如果是硬编码的timestamp，直接使用数字即可：

msg_1 = {
    "jsonrpc": "2.0",
    "id": 833,
    "method": "public/get_tradingview_chart_data",
    "params": {
        "instrument_name": str(instr_),
        "start_timestamp": 1554373800000,
        "end_timestamp": 1654373800000,
        "resolution": "1440"
    }
}

如果timestamp来自字符串类型的变量，需要先转为整数类型：

# 示例：假设start_ts和end_ts是字符串格式的timestamp
start_timestamp = int(start_ts)
end_timestamp = int(end_ts)

msg_1 = {
    "jsonrpc": "2.0",
    "id": 833,
    "method": "public/get_tradingview_chart_data",
    "params": {
        "instrument_name": str(instr_),
        "start_timestamp": start_timestamp,
        "end_timestamp": end_timestamp,
        "resolution": "1440"
    }
}

验证效果 #

修正后，字典中的start_timestamp和end_timestamp为整数类型，序列化后的JSON会保持数字格式，不带引号：

{
  "jsonrpc": "2.0",
  "id": 833,
  "method": "public/get_tradingview_chart_data",
  "params": {
    "instrument_name": "ETH-12AUG22",
    "start_timestamp": 1554373800000,
    "end_timestamp": 1654373800000,
    "resolution": "1440"
  }
}

内容的提问来源于stack exchange，提问作者Kiann