Bogus mutation: "* 1." -> "/ 1."

Example:

-        Z_available = molinit['elez'] * molinit['real'] * 1.
+        Z_available = molinit['elez'] * molinit['real'] / 1.

mutmut version 1.5.1

[mattwelborn]

Thanks for the quick response!

The problem is that this mutation causes a false positive for every standard type. For numeric types – I tested int, float, bool and corresponding numpy types – * 1. and / 1. give the same result (e.g. 42 * 1. == 42 / 1.). For other types – I tested list, set, str, dict, and None — both * 1. and / 1. cause a TypeError.

[boxed]

Cool! Always happy to hear people are using mutmut. Hope it goes well and I’d love to hear any more feedback you might have.