使用 separators 参数来更改默认分隔符

import json
 
x = {
  "name": "Bill",
  "age": 63,
  "married": True,
  "divorced": False,
  "children": ("Jennifer","Rory","Phoebe"),
  "pets": None,
  "cars": [
    {"model": "Porsche", "mpg": 38.2},
    {"model": "BMW M5", "mpg": 26.9}
  ]
}
 
# use . and a space to separate objects, and a space, a = and a space to separate keys from their values:
print(json.dumps(x, indent=4, separators=(". ", " = ")))