python实现进制转化的示例代码

# 自然数 = 十进制数
print("----------------------")
print("------  0.小数  -------")
print("------  1.整数  -------")
flag = int(input())

# 初始化a,b的值
a = 0
b = 0.0
x = ""

# 判断是否为小数或者整数
if flag == 0:
    x = input("请任意输入一个小数：")
    # a为整数部分，b为小数部分
    a = int(float(x))
    b = float(x) - a

elif flag == 1:
    x = input("请任意输入一个整数：")
    a = int(x)

else:
    print("输入格式错误")

"""
三者都是用辗转相除法求解
"""
list_en = ['A','B','C','D','E','F']
list_1 = []          # 收集整数部分
list_2 = []          # 收集小数部分
list_3 = []          # 收集整数部分
list_4 = []          # 收集小数部分
list_5 = []          # 收集整数部分
list_6 = []          # 收集小数部分


# 求二进制数
def fun_two(n,m):
    if m == 0.0:              #整数部分
        while n != 0:
            i = n % 2
            list_1.insert(0,i)    # 类似于压栈
            n = n // 2

    else :
        count = 0
        while n != 0:
            i = n % 2
            list_1.insert(0,i)    # 类似于压栈
            n = n // 2

        while count != 10:
            m = m * 2
            j = int(m)
            m = m - j
            list_2.append(j)
            count = count + 1

# 求八进制数
def fun_eight(n, m):
    if m == 0.0:  # 整数部分
        while n != 0:
            i = n % 8
            list_3.insert(0, i)  # 类似于压栈
            n = n // 8
    else:
        count = 0
        while n != 0:
            i = n % 8
            list_3.insert(0, i)  # 类似于压栈
            n = n // 8

        while count != 10:
            m = m * 8
            j = int(m)
            m = m - j
            list_4.append(j)
            count = count + 1


# 求十六进制数
def fun_sixteen(n, m):
    if m == 0.0:  # 整数部分
        while n != 0:
            i = n % 16
            list_5.insert(0, i)  # 类似于压栈
            n = n // 16
    else:
        count = 0
        while n != 0:
            i = n % 16
            list_5.insert(0, i)  # 类似于压栈
            n = n // 16

        while count != 10:
            m = m * 16
            j = int(m)
            m = m - j
            list_6.append(j)
            count = count + 1
        print("yes")

def print_str(list1):
    s = ""
    for item in list1:
        if item == '.':
            item = '.'
        elif int(item) > 10:
            l = item - 10
            item = list_en[l]
        s = s + str(item)
    return s

# 二进制求解
fun_two(a,b)

# 八进制求解
fun_eight(a,b)

# 十六进制求解
fun_sixteen(a,b)

list_1.append('.')
list_1.extend(list_2)

list_3.append('.')
list_3.extend(list_4)

list_5.append('.')
list_5.extend(list_6)

s_two = print_str(list_1)
s_eight = print_str(list_3)
s_sixteen = print_str(list_5)

# 测试结果
if __name__ == '__main__':
  print(a)
  print(b)
  print(type(a))
  print(type(b))
  print(list_1)
  print(list_3)
  print(list_5)
  print("二进制值：", end = "")
  print(s_two)
  print("八进制值：", end="")
  print(s_eight)
  print("十六进制值：", end="")
  print(s_sixteen)