On 22.01.2014 20:18, Ned Batchelder wrote:
On 1/22/14 11:37 AM, Asaf Las wrote:
Chris is right here, too: modules are themselves singletons, no matter
how many times you import them, they are only executed once, and the
same module object is provided for each import.
I'm not sure, if this is the whole truth.
think about this example:
cat bla.py
a = 10
cat foo.py
from bla import a
def stuff():
return a
cat bar.py
from foo import stuff
print stuff()
a = 5
print stuff()
from bla import *
print a
python bar.py
10
10
10
here the a is coming from bla and is known in the global namespace. But
the value differs in stuff() and before/after the import statement. So
the instance of the module differs -> it cannot be a singelton.
bg,
Johannes
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