位數轉換

n=19
bians=""
while n>0:
    r=str(n%2)
    bians=r+bians
    n=n//2
print(bians)

======建立函數 =====

def conver(n,base):
    result=" "
    while n>0:
        r=n%base
        result=str(r)+result
        n=n//base
    return result

print(conver(4,2))