How can one create new scopes in python

In many languages (and places) there is a nice practice of creating local scopes by creating a block like this.

void foo()
{
     ... Do some stuff ...

     if(TRUE)
     {
         char a;
         int b;

         ... Do some more stuff ...
     }

     ... Do even more stuff ...
 }

How can I implement this in python without getting the unexpected indent error and without using some sort of if True: tricks