Josh Rosenberg added the comment:
This is a documented feature of locals() (it's definitionally impossible to
auto-vivify *real* locals, because real locals are statically assigned to
specific indices in a fixed size array at function compile time, and the
locals() function is returning a
Dennis Sweeney added the comment:
>From https://docs.python.org/3/library/functions.html#exec :
"modifications to the default locals dictionary should not be attempted. Pass
an explicit locals dictionary if you need to see effects of the code on locals
after function exec() returns."
There
New submission from Xinmeng Xia :
Normally after executing a piece of code in a function, locals() should contain
the local variables and these variables can be reassigned next. In the
following code, "attr" should be found in locals(). Actually, it can not be
found in either locals() or
