Python：将多行 json 字符串更改为单行

Question

我必须将以下字符串传递给 python 命令

'[{
  "action": "DELETE",
  "is_enabled": true,
  "name": "qe_ta_rule_kYKco6_ObjectLifecyclePolicy",
  "object_name_filter": null,
  "time_amount": 1,
  "time_unit": "DAYS"
}]'

有没有办法替换所有换行符，以便 i 成为 1 行字符串

Answer 1

这不是一个有效的 python 字符串：

'[{
  "action": "DELETE",
  "is_enabled": true,
  "name": "qe_ta_rule_kYKco6_ObjectLifecyclePolicy",
  "object_name_filter": null,
  "time_amount": 1,
  "time_unit": "DAYS"
}]'

多行字符串应该是这样的：

'[{ \
  "action": "DELETE", \
  "is_enabled": true, \
  "name": "qe_ta_rule_kYKco6_ObjectLifecyclePolicy", \
  "object_name_filter": null, \
  "time_amount": 1, \
  "time_unit": "DAYS" \
}]'

如果这是来自 web，它可能是这样的： '[{ \n "action": "DELETE", \n...'

无论哪种方式，您都将替换像your_str.replace('\n', '')这样的新行

Answer 2

您可以使用jq来实现这一点：

来源 JSON：

[
  {"empid": "1", "empname": "E1", "empsal": "100"},
  {"empid": "2", "empname": "E2", "empsal": "200"},
  {"empid": "3", "empname": "E3", "empsal": "300"}
]

转型：

cat source.json | jq -c '.[]' > target.json

目标 JSON：

{"empid":"1","empname":"E1","empsal":"100"}
{"empid":"2","empname":"E2","empsal":"200"}
{"empid":"3","empname":"E3","empsal":"300"}