1""" 2categories: Syntax,Operators 3description: MicroPython allows using := to assign to the variable of a comprehension, CPython raises a SyntaxError. 4cause: MicroPython is optimised for code size and doesn't check this case. 5workaround: Do not rely on this behaviour if writing CPython compatible code. 6""" 7print([i := -1 for i in range(4)]) 8