odoo12 CE. Unsupported operand type +: 'bool' and datetime + timedelta(hours=3)

Question

I tried to calculate attendance hours from check in/out,  ... Code work fin in local computer but when install addons on the server. Issue showed up
This is error msg:
Date_check_out =employee.datetime + timedelte(hours=3)
Unsupported operation type +: 'bool' and datetime.timedelta(hours=3)
Note: attendance list have mane lines of check in /out records
when calculate attendance of employee with no attendance "zero attendance hours" no error happen,    only when attendance have values
odoo12 CE.

Niyas Raphy (Walnut Software Solutions) · Accepted Answer

Hi,
Regarding this error that you are getting "Unsupported operation type +: 'bool' and datetime.timedelta(hours=3)" , might be due to as there is no value inside the field employee.datetime, as there is no value in the field it will return False, that is why you are getting the above error. Add a if condition and make sure that the field contains value.
Thanks

salah · Answer

I solve it by adding if condition. If. It empty will add now date
Thank u all

Zehra Çelik · Answer

How can I find the difference between the dates in the two fields?

Hilar Andikkadavath · Answer

You are trying to add with a bool function and there is a typo error in your code. Instead of function timedelta  you used timedelte.
try to change like this,
if employee.datetime:
assert isinstance(employee.datetime, datetime), 'Datetime instance expected'
Date_check_out = employee.datetime + timedelta(hours=3)

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