python基础题 如何把n进制转换为b进制

m = int(input('please input the orginal number system'))
n = int(input('please input the objective number system'))
m_str = input('the orginal integer ')

if(float(m_str)==int(float(m_str))):
m_number = int(m_str,m)#get the numeric value of m
symbol = ''

    if(m_number<0):#figure out the final symbol
            m_number = abs(m_number)#get positive value
            symbol = '-'

    if(n == 10):# m convert to 10
            print(symbol+str(m_number))
    else:#10 convert to n
            ans = ''
            while(m_number):
                    ans = str(m_number%n) + ans#doing the mod
                    m_number = m_number//n#warning!!: using // not /
            print(symbol+ans)#print the answer

else:
print('input is not integer')