tricky recursion

recurse.c

// in c
#include <stdio.h>
void loopz(int num){
  num += 1;
  if (num < 10) {
    loopz(num);
    puts("Cannot Compute");
  } else {
    puts("Stopping");
  }
}
loopz(0); // call the function

recurse.js

// in javascript
function loopz(num){
  num += 1;
  if (num < 10) {
    loopz(num);
    console.log("Cannot Compute");
  } else {
    console.log("Stopping");
  }
}
loopz(0); // call the function

recurse.py

# in python
def loopz(num):
  num += 1
  if num < 10:
    loopz(num)
    print('Cannot Compute')
  else:
    print('Stopping')

loopz(0)

This program doesn't execute as expected, why?