# coding: utf-8
from __future__ import print_function, division, unicode_literals, absolute_import

import sys

def is_str(obj):
    return isinstance(obj, (str, u"".__class__, "".__class__))


def dumps(obj):
    # convert from json to con
    if isinstance(obj, bool):
        if obj:
            return "true"
        return "false"
    if isinstance(obj, (int, float)):
        return str(obj)
    if is_str(obj):
        return "'" + obj.replace("'", "''") + "'"
    if obj is None:
        return "null"
    if isinstance(obj, (list, tuple)):
        s = "{"
        for i, ele in enumerate(obj):
            if i > 0:
                s += ","
            s += dumps(ele)
        s += "}"
        return s
    if isinstance(obj, dict):
        s = "{"
        for i, key in enumerate(obj.keys()):
            if i > 0:
                s += ","
            s += key + ":"
            s += dumps(obj[key])
        s += "}"
        return s
    return "null"


if __name__ == '__main__':
    print(dumps([{"x": [complex(1, 2), 1, True, 2, (3, 4),
                        None, [{"y": 11}, 1e44]]}, [1, 2, 3], "3'"]))

    print(dumps({'Shape': [28, 28, 1], "InputType": 'pointwise',
                 "ImportanceMul": 0.0001}).encode())