Need help to understand the following code

Please help me to understand the above code

Comments

[Bernard Chhun]

First, you need to figure out the complicated parts:

>>> 5//2
2
>>> 5/2
2.5

I googled "python double slash" and reached this page: pythonpool.com/python-double-slash/

then you need to figure out what the print statement does.

Trying the function out, I'd say it displays the binary version of the number you used as a starting parameter:

>>> def dec(num):
...     if num > 1:
...             dec(num//2)
...     print(num%2,end='')
...
>>> dec(2)
10>>>
>>> dec(3)
11>>>

The recursive part might throw you off as well :)

It really looks like a code golfing challenge if you ask me !