How can I force the use-only-after-declaration?

[Marco Spedaletti]

Hi!

In other languages, I am used to declare variables before the use.
The translators for those languages give me an error/warning if I use a
variable that has not been declared.

Example (C-like syntax):

    ...

    int a, c;

    a = 100; /* Ok! */
    b = 200; /* Error! */
    c = 300; /* Ok! */

    ...

There is a way to emulate it using Python?

Bye!

Marco.