or.md

Got code that looks like this, and it's not working properly?

if x == "foo" or "bar" or "baz":

Python is interpreting this as though it was this:

if (x == "foo") or ("bar") or ("baz"):

If the first expression (x == "foo") isn't true, the second ("bar") will be, so this compound conditional always passes. Try this instead:

if x == "foo" or x == "bar" or x == "baz":

or, even better:

if x in ("foo", "bar", "baz"):