import threading
import collections

import sys

is_py2 = sys.version[0] == "2"
if is_py2:
    import Queue as queue
else:
    import queue as queue


def isScalar(x):
    return not isinstance(x, (list, tuple))


def isList(x):
    return isinstance(x, (list))


def asString(x):
    return str(x)


def makeDict():
    return {"a": 1.0, "c": 3.0, "b": 2.0}


def makeTuple():
    return (1.0, 2.0, 3.0)


def makeTupleWithOrderedDict():
    return (1.0, collections.OrderedDict({"b": 777, "a": 22}))


def makeIterator(x):
    return iter(x)


def makeGenerator(n):
    i = 0
    while i < n:
        yield i
        i += 1


def iterateOnThread(iter):
    results = []

    def iteration_worker():
        for i in iter:
            results.append(i)

    thread = threading.Thread(target=iteration_worker)
    thread.start()
    while thread.is_alive():
        thread.join(0.1)
    return results


def invokeOnThread(f, *args, **kwargs):
    result = []

    def invoke_worker():
        result.append(f(*args, **kwargs))

    thread = threading.Thread(target=invoke_worker)
    thread.start()
    while thread.is_alive():
        thread.join(0.1)
    return result[0]


def reflect(x):
    return x


def callFunc(f, *args, **kwargs):
    return f(*args, **kwargs)


def testThrowError():
    throwError()


def throwError():
    raise ValueError("A very specific bad thing happened")


class PythonClass(object):

    FOO = 1
    BAR = 2

    @classmethod
    def class_method(cls):
        return cls.FOO


class PythonCallable(object):

    FOO = 1
    BAR = 2

    """ Call a callable
    Args:
      arg1: First argument.
  """

    def __call__(self, arg1):
        return arg1


def create_callable():
    return PythonCallable()


dict_with_callable = dict(callable=create_callable())