Keywords

Reserved Keywords

The following identifiers are reserved and cannot be used as names (e.g., variable names, function names, etc)¹.

Identifier	Identifier	Identifier	Identifier	Identifier
`False`	`None`	`True`	`and`	`as`
`assert`	`async`	`await`	`break`	`class`
`continue`	`def`	`del`	`elif`	`else`
`except`	`finally`	`for`	`from`	`global`
`if`	`import`	`in`	`is`	`lambda`
`nonlocal`	`not`	`or`	`pass`	`raise`
`return`	`try`	`while`	`with`	`yield`

Notice how all of them have special color instead of the usual black color. This is how you can usually determine if an identifier is reserved or not.

Built-In Keywords

The following identifiers are part of built-in functions². They should not be used but there will be no warning from Python.

Identifier	Identifier	Identifier	Identifier	Identifier	Identifier	Identifier
`abs`	`aiter`	`all`	`anext`	`any`	`ascii`	`bin`
`bool`	`breakpoint`	`bytearray`	`bytes`	`callable`	`chr`	`classmethod`
`compile`	`complex`	`delattr`	`dict`	`dir`	`divmod`	`enumerate`
`eval`	`exec`	`filter`	`float`	`format`	`frozenset`	`getattr`
`globals`	`hasattr`	`hash`	`help`	`hex`	`id`	`input`
`int`	`isinstance`	`issubclass`	`iter`	`len`	`list`	`locals`
`map`	`max`	`memoryview`	`min`	`next`	`object`	`oct`
`open`	`ord`	`pow`	`print`	`property`	`range`	`repr`
`reversed`	`round`	`set`	`setattr`	`slice`	`sorted`	`staticmethod`
`str`	`sum`	`super`	`tuple`	`type`	`vars`	`zip`

Many of these also have special colors. So try to avoid identifiers that have special colors.