var s = {
    a: "asd",
    b: 1,
    c: true,
};

let rtn = await python`print(${s})`;

The s.c parameter leads to an exception thrown. Strings/numbers work, arrays as well. Only boolean and null values (including NaN) throw errors:

(node:4232) UnhandledPromiseRejectionWarning: Error: Traceback (most recent call last):
  File "...\node_modules\python-bridge\node_python_bridge.py", line 94, in <module>
    value = eval(_compile(data['code'], '<input>', 'eval'), _locals)
  File "<input>", line 1, in <module>
NameError: name 'true' is not defined

The easiest solution I found was to adapt _locals, but I have no idea if that leads to other problems (maybe also for Infinity/NaN?):

_locals = {'__name__': '__console__', '__doc__': None, 'true': True, 'false': False, 'null': None}

The cleaner solution could be to use json.loads to convert JSON input strings to a Python dict?