importing a package is very slow

Say I have two packages:

+pack1
-- func1.m
-- func1_no_import.m
+pack2

Pack1 contains the following code:

function func1()
import('pack2.*');

function func1_no_import()

Then I test how much time it takes to run func1 3 million times:

import('pack1.*')
tic;
for i = 1:3000000
    func1;
end
toc;
Elapsed time is 6.679269 seconds.

If you do the same thing in python, it takes less than half a second.

import time

start = time.time()

for i in range(3000000):
    import os

end = time.time()
print(end - start)
0.3926999568939209

Also compare it with a control experiment where no import is performed.

import('pack1.*')
tic;
for i = 1:3000000
    func1_no_import;
end
toc;
Elapsed time is 0.100767 seconds.

The main thing I don't understand is that since I heard that import is statically analyzed by Matlab (that is, it doesn't matter where you put the import statement in the function. https://stackoverflow.com/questions/37386754/why-can-you-import-a-package-after-using-its-content-in-a-function ). Why couldn't the cache of the function (I know that function contents are cached in Matlab) store the result of the import instead of running it 3 million times?

[covariant_cat]

Related problem with import: https://www.mathworks.com/matlabcentral/answers/404078-how-to-avoid-importing-the-same-package-name-repeatedly-in-all-functions-in-this-package?s_tid=prof_contriblnk