Looks like a 2 vs 3 thing: Python 2.7.14 (default, Jan 6 2018, 14:37:03) [GCC 5.4.0] on linux2 Type "help", "copyright", "credits" or "license" for more

Looks like a 2 vs 3 thing: Python 2.7.14 (default, Jan 6 2018, 14:37:03) [GCC 5.4.0] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> dict(**{1:2,3:4}) {1: 2, 3: 4} >>> vs Python 3.4.5 (default, Jan 6 2018, 14:44:12) [GCC 5.4.0] on linux Type "help", "copyright", "credits" or "license" for more information. >>> dict(**{1:2,3:4}) Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: keyword arguments must be strings >>>