How to compare json with pattern in python?

Question

Json data:

{
  "options": {
    "name": "aaa",
    "count": 20,
    "a1": 30
  },
  "PC": {
    "processor": "Intel",
    "os": "windows"
  }
}

Pattern:

{
  "options": {
    "name": "string",
    "count": "integer",
    "a1": "integer"
  },
  "PC": {
    "processor": "string",
    "os": "string"
  }
}

How to check that all keys are there and their type is the same?

import json

data = '{"options": {"name": "aaa","count": 20,"a1": 30},"PC": {"processor": "Intel","os": "windows"}}'
pattern = '{"options": {"name": "string","count": "integer","a1": "integer"},"PC": {"processor": "string","os": "string"}}'
json_data = json.loads(data)
json_pattern = json.loads(pattern)

for key in json_pattern.keys():
  if key not in json_data:
      print("Error: %s" % key)

print("end")

json_pattern.keys() return only options and PC, but i need name, count, a1, processor, os too.

And one more question, how to know that PC and options is variable which contains another variables? Sorry for my english.

Very related, just using Python types instead of type names: https://stackoverflow.com/q/45812387/1639625 — tobias_k, Apr 03 '18 at 11:19

Ajax1234 · Answer 1 · 2018-04-03T14:27:43.030

You can use recursion with zip:

import __builtin__ as built
testing_data = [[{"options": {"name": "aaa", "count": 20, "a1": 30}, "PC": {"processor": "Intel", "os": "windows"}}, {"options": {"name": "string","count": "integer", "a1": "integer"}, "something": {"processor": "string", "os": "string"}}]]

def check_input(a, b):
   for [c, d], [g, f] in zip(sorted(a.items(), key=lambda x:x[0]), sorted(b.items(), key=lambda x:x[0])):
      if c != g:
        raise ValueError("Wrong key. Expecting '{}', not '{}'".format(g, c))
      if not isinstance(d, dict) and not isinstance(f, dict) and not isinstance(d, getattr(built, f[:3])):
         raise TypeError("Wrong value type. Expecting '{}' for key '{}', not '{}'".format(f, g, type(d).__name__))
      if all(isinstance(i, dict) for i in [d, f]):
         check_input(d, f)

for i in testing_data:
  check_input(*i)

How to compare json with pattern in python?

1 Answers1