[Zope] Can I use datetime and timedelta in zope?

[jai alai]

Kaixo;

I try to use datetime and timedelta in Zope and
returns a error....

Error Type: ImportError
Error Value: import of "datetime" is unauthorized

I try use datetime and timedelta in an External Method
and returns an error to ....

Error Type: ImportError
Error Value: No module named datetime

There's any way to import this module in Zope or I
must create a new product for it.

Joseba.

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