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why import time 2x - Printable Version

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why import time 2x - ilcaa72 - Apr-16-2019

just need a quick explanation on why if i imported time from datetime in line 2, do i need to import again in line 3 to make this work?

ctime wont appear if i dont import time on its own line... as a newbie, just a little confused


import datetime
from datetime import date, time, timedelta
import time

mtime= path.getmtime('textfile.txt')
t = time.ctime((mtime) )
print(t)


RE: why import time 2x - buran - Apr-16-2019

actually, these are different
on line 2 you import datetime.time
while on line 3 you import time module

now, on line 1 you import datetime module as a whole, then on line 2 you import some of the available objects in the same module. i.e. if we talk of duplicate imports, it's line 1 and line 2

RE: why import time 2x - ilcaa72 - Apr-16-2019

thanks, now line 3 makes sense, its actually a different library

so once you import the library (import datetime) you dont need to import the individual objects? (im i wording this correctly?) why do i see this so much in tutorials?

RE: why import time 2x - buran - Apr-16-2019

(Apr-16-2019, 06:09 PM)ilcaa72 Wrote: so once you import the library (import datetime) you dont need to import the individual objects? (im i wording this correctly?) why do i see this so much in tutorials?
it depends. with the datetime module probably most/many would prefer to import the individual objects they would use. The difference is how you would reference them
python3.7

compare
Python 3.7.3 (default, Mar 26 2019, 01:59:45) 
[GCC 5.4.0 20160609] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import datetime
>>> datetime.datetime.now()
datetime.datetime(2019, 4, 16, 21, 20, 40, 991213)
>>> datetime.date.today()
datetime.date(2019, 4, 16)
and

Python 3.7.3 (default, Mar 26 2019, 01:59:45) 
[GCC 5.4.0 20160609] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from datetime import datetime, date
>>> datetime.now()
datetime.datetime(2019, 4, 16, 21, 22, 31, 802438)
>>> date.today()
datetime.date(2019, 4, 16)
>>>


RE: why import time 2x - DeaD_EyE - Apr-16-2019

You can type just the imported module name into the console.
You get back the representation of the object. This works with all objects.
In addition you can import inspect and get the sourcefile of a loaded module.

Here some examples:
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