Delays are done with the time library, specifically the time.sleep() function.
To just make it wait for a second:
from time import sleep
sleep(1)
This works because by doing:
from time import sleep
You extract the sleep function only from the time library, which means you can just call it with:
sleep(seconds)
Rather than having to type out
time.sleep()
Which is awkwardly long to type.
With this method, you wouldn't get access to the other features of the time library and you can't have a variable called sleep. But you could create a variable called time.
Doing from [library] import [function] (, [function2]) is great if you just want certain parts of a module.
You could equally do it as:
import time
time.sleep(1)
and you would have access to the other features of the time library like time.clock() as long as you type time.[function](), but you couldn't create the variable time because it would overwrite the import. A solution to this to do
import time as t
which would allow you to reference the time library as t, allowing you to do:
t.sleep()
This works on any library.
