Hello,
I see that code listing was partially garbled (code merged into some
comments). It shouldn't be too bad to disambiguate it, but let me try
to repost the code again:
```
import mod
# Leads to a warning: replacing (monkey-patching) a constant slot (function)
with a variable.
mod.func1 = 1
# Leads to a warning: replacing (monkey-patching) a constant slot (function).
mod.func2 = lambda: None
# Way to define a constant.
my_cnst: const = 1
# Leads to a warning: replacing (monkey-patching) a constant slot.
my_cnst: const = 2
glb1 = 100
def fun():
# Imports are not allowed at run-time
import mod2
# But you can re-import module previously imported at import-time.
import mod
# RuntimeError
my_cnst = 3
# RuntimeError
mod.func2 = lambda x: 1
global glb1, new
# RuntimeError: Cannot create new global nameslots at runtime.
new = 1
# Nor can delete existing
del glb1
# Cheats don't work
globals()["new"] = 1
# Leads to a warning: replacing (monkey-patching) a constant slot (function).
def fun():
pass
# fun_var is a variable storing a reference to a function (can store ref
# to another func).
fun_var = fun
# fun2 is an alias of fun
fun2: const = fun
# Run-time execution starts with this function. This clearly delineates
# import-time from run-time: a module top-level code is executed at
# import-time (including import statements, which execute top-level code
# of other modules recursively). When that is complete, strict mode
# interpreter switches to run-time mode (restrictions enabled) and
# executes __main__().
def __main__():
fun()
# This statement is not executed when program runs in strict mode.
# It is executed when it is run in normal mode, and allow to have
# the same startup sequence (execution of __main__()) for both cases.
if __name__ == "__main__":
__main__()
```
On Tue, 1 Dec 2020 18:26:48 +0300
Paul Sokolovsky <[email protected]> wrote:
> Hello,
>
> Recently, there was a discussion of language-level (vs just
> stdlib-level, like currently done by "typing" module) "const"
> annotation. The discussion mentioned that the initial
[]
--
Best regards,
Paul mailto:[email protected]
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