无法理解 python 代码的功能

Question

def dtb(num):
    if num > 1:
        dtb(num//2)
    print(num%2,end='')

dtb(10)

I understand the recursion part but not able to understand the rest code.Can someone please provide a step by step explanation. Thanks in advance.

Answer 1

This function converts an integer decimal number to a binary number.

// - operator of floor division. For example (13//5) will return 2

PS. You need to write dtb(10) instead of def(10) to call tour method.

Answer 2

If it's the print part thats confusing you, it will print num mod 2 (the remainder after dividing by 2). The end='' is so python doesn't print a new line after, which it does by default.

As for the def(10), I'm assuming thats a typo. It should be dtb(10) which would call the recursive function on the integer 10.