Use wrapper as a function

We can take any arbirary fuction, for example the myfunc, pass it to the wrap function and assign the returned value back to the myfunc name. This will replace the original myfunc by one returned by the wrap function.

So far myfunc was not called.

Then we call the new myfunc.

This will basically call the new_function that will call the original myfunc.

We did not use any “decoration” for this. Just plain function calls.

from wrapper import wrap
import time

def myfunc():
    print("myfunc started")
    time.sleep(1)
    print("myfunc ended")


myfunc = wrap(myfunc)

myfunc()

$ python use_wrapper.py

start new 'myfunc'
myfunc started
myfunc ended
end new 'myfunc' 1.0002148151397705