text: # _*_ coding: utf-8 _*_
  
  """
  ---------------------------------
  @Time     : 2017/12/5 13:56
  @Author   : yuxy
  @File     : hex_test.py
  @Project  : PythonSyntax
  ----------------------------------
  """
  """
  十进制转二进制、八进制、十六进制
  """
  # 获取用户输入十进制数
  dec = int(input("输入数字："))
  
  print("十进制数为：", dec)
  print("转换为二进制为：", bin(dec))
  print("转换为八进制为：", oct(dec))
  print("转换为十六进制为：", hex(dec))
  
  
  """
  具体实现
  十进制到二进制：
  def dec2bin(num):
      l = []
      if num < 0:
          return '-' + dec2bin(abs(num))
      while True:
          num, remainder = divmod(num, 2)
          l.append(str(remainder))
          if num == 0:
              return ''.join(l[::-1])
  十进制到八进制：
  def dec2oct(num):
      l = []
      if num < 0:
          return '-' + dec2oct(abs(num))
      while True:
          num, remainder = divmod(num, 8)
          l.append(str(remainder))
          if num == 0:
              return ''.join(l[::-1])
  十进制到十六进制：
  base = [str(x) for x in range(10)] + [ chr(x) for x in range(ord('A'),ord('A')+6)]
  def dec2hex(num):
      l = []
      if num < 0:
          return '-' + dec2hex(abs(num))
      while True:
          num,rem = divmod(num, 16)
          l.append(base[rem])
          if num == 0:
              return ''.join(l[::-1])
  """
  