tuple vs list vs dict, repr vs str with eval cast

python_types_casts

class Point3D(object):
    def __init__(self, x, y, z):
        self.x = x
        self.y = y
        self.z = z

    def __repr__(self):
        return str(self.z)

    def __str__(self):
        return "(%s, %s, %s)" % (self.x, self.y, self.z)


my_point = Point3D(1, 2, 3)
print(my_point)
v = str(repr(my_point))
b = isinstance(v, str)
if b:
    v1 = int(v) + 1
    s = str(v1) + ';'
    print(s)
else:
    print(b, ";")

print(isinstance(('a', 'b'), tuple))
print(isinstance(['a', 'b'], list))

dic = {'abc': 'abc', 'def': {'a1': 'a1v', 'a2': 'a2v'}}
for elem in dic.values():
    if isinstance(elem, dict):
        for ndx, item in elem.items():
            print(ndx, ' => ', item, 'is ')
            for i in item:
                print(i)