???: if "{choice}" in self._command

[BaiYouLing4]

What does this do?

if "{choice}" in self._command

Curly braces are for replacement fields in strings for the .format method (or so I thought).

So I don't understand what this code is doing.

self._command = "M876"
choice = "0"

Thanks for any/all help

[ndc85430]

The string isn't an f-string, so the test is for whether the literal string "{choice}" is in self._command. Since it isn't an f-string, the value of the variable choice is irrelevant. Did you try running a complete program with that code and appropriate values?

[Gribouillis]

What does this do?

It tests if self._command contains the literal string "{choice}". If the author intended a replacement of "{choice}" by "0", he should have used f"{choice}" (for python version >= 3.6)

[BaiYouLing4]

Thanks for clearing up my confusion!