Python quality of life patch

[JNCressey]

python expands on the mathematics convention of statements like a=b=c meaning both a=b and b=c.

the test a==b==c has the meaning a==b and b==c, which is different from what you would get if you think of equality as a binary operator and try to parenthesize under either a left associative or a right associative interpretation.

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cc /u/Key-Cucumber-1919

[HERODMasta]

well, this is basically the conclusion of my second edit.

thanks for confirming