On 16Feb2024 20:32, MRAB <pyt...@mrabarnett.plus.com> wrote:
On 2024-02-16 20:07, Gabor Urban via Python-list wrote:
I need something about modules to be clarified.
Suppose I have written a module eg: ModuleA which imports an other
module, let us say the datetime.
If I import ModuleA in a script, will be datetime imported automatically?
Yes. When a module is imported it can import other modules.
But note that `datetime` does not magicly get put in the script's
namespace.
Module A:
import datetime
Script:
import A
In the code in module A the name datetime is known and can be used.
In the code in the script the name A is known and can be used. Importing
A does not magicly set the name datetime in the script's namespace -
imagine the the pollution!
You _can_ access it as A.datetime because it is in the A module's
namespace. But really if you just wanted datetime for direct use in the
script you would import it there too:
import datetime
import A
Note that the datetime module is only actually loaded once. The import
binds the name into your local namespace like any other variable.
Cheers,
Cameron Simpson <c...@cskk.id.au>
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