Putting big data into digital form

When integer numbers above ten thousand appear, it is often more intuitive to verbalize them. Share two pieces of code below, python and js

python

def fn(num):
    '''
    把数字口语化
    '''
      
    ret = ''
    num = int(num)
    if num/10000 == 0:
        ret = str(num)
    else:
        if num/10**8 == 0:
            if num%10000 != 0:
                ret = str(num/10000) + '万' + str(num % 10000)
            else:
                ret = str(num/10000) + '万'
        else:
            n2 = num%10**8
            if n2%10000 != 0 and n2/10000 != 0:
                ret = str(num/10**8) + '亿' + str(n2/10000) + '万' + str(n2%10000)
            elif  n2%10000 != 0 and n2/10000 == 0:
                ret = str(num/10**8) + '亿' +  str(n2%10000)
            elif  n2%10000 == 0 and n2/10000 != 0:
                ret = str(num/10**8) + '亿' +  str(n2/10000) + '万'
            elif  n2%10000 == 0 and n2/10000 == 0:
                ret = str(num/10**8) + '亿'
    return ret

javascript:

function int2string(num) {
    num = Number(num);
    if (num/10000 < 1){
        ret = num;
    }else{
        if (num/Math.pow(10,8) < 1) {
            if (num%10000 != 0) {
                ret = parseInt(num/10000) + &#39;万&#39; + num % 10000;
            }else{
                ret = parseInt(num/10000) + &#39;万&#39;;
            }
        }else{
            n2 = num%Math.pow(10,8);
            if (n2%10000 != 0 & n2/10000 != 0) {
                ret = parseInt(num/Math.pow(10,8)) + &#39;亿&#39; + parseInt(n2/10000) + &#39;万&#39; + (n2%10000);
            }else if(n2%10000 != 0 & n2/10000 == 0){
                ret = parseInt(num/Math.pow(10,8)) + &#39;亿&#39; +  parseInt(n2%10000);
            }else if(n2%10000 == 0 & n2/10000 != 0){
                ret = parseInt(num/Math.pow(10,8)) + &#39;亿&#39; +  parseInt(n2/10000) + &#39;万&#39;;
            }else if(n2%10000 == 0 & n2/10000 == 0){
                ret = (num/Math.pow(10,8)) + &#39;亿&#39;;
            }
        }
    }
    return ret
}