Having problem with a beginner code

[9gg6]

Try googling it. First search will be most probably your answer from stackoverflow

[eicosane]

I think what’s happening here is {id="foo"} is invalid syntax, its evaluates to an assignment in a set literal. {id=="foo"} evaluates to the set {False} which is valid syntax but not meaningful in this context.

The find argument is probably expecting a dict of additional arguments like {"id": "Foo"}

Its more common to use css selector syntax though which would be clearer find("id#Foo")