How to fix issue with 'datetime.datetime' which has no attribute timedelta?

Question

How will I fix this problem on Python. Here's my code:

    import time     import datetime     from time import mktime     from datetime import datetime      date = '20120814174530'     date_to_strp = time.strptime(date, '%Y%m%d%H%M%S') #convert the value of date into strptime     date_final = datetime.fromtimestamp(mktime(date_to_strp))     #convert date_to_strp so so i can use it to subtract a value from a timedelta later      date_substracted = date_final - datetime.timedelta(hours = 36) 

this has an error:

type object 'datetime.datetime' has no attribute 'timedelta'

even though I import datetime, I think it was overriden by from datetime import datetime, but when I changed the position of import datetime and from datetime import datetime, the error is:

'module' object has no attribute 'fromtimestamp'

I can fix this both error with this code:

    import time     from time import mktime     from datetime import datetime      date = '20120814174530'     date_to_strp = time.strptime(date, '%Y%m%d%H%M%S')     date_final = datetime.fromtimestamp(mktime(date_to_strp))      import datetime      date_substracted = date_final - datetime.timedelta(hours = 36) 

Now, with this code it is functioning properly, but what I want is that all import part would be at the top as a good practice, any suggestion on how will i do that without any error with this situation or any suggestion on how will i code it in other way around.

Answer 1

Either use datetime.datetime.fromtimestamp or change the import to from datetime import datetime as dt and use dt.fromtimestamp.

Answer 2

I suppose you should import timedelta separately like this.

from datetime import datetime as dt, timedelta 

Then you can call

dt.fromtimestamp(mktime(date_to_strp)) 

and

timedelta(hours = 36)