注册 登录
  • 欢迎访问开心洋葱网站,在线教程,推荐使用最新版火狐浏览器和Chrome浏览器访问本网站,欢迎加入开心洋葱 QQ群
  • 为方便开心用户,开心洋葱官网已经开启复制功能!
  • 欢迎访问开心洋葱网站,手机也能访问哦~欢迎加入开心洋葱多维思维学习平台 QQ群
  • 如果您觉得本站非常有看点,那么赶紧使用Ctrl+D 收藏开心洋葱吧~~~~~~~~~~~~~!
  • 由于近期流量激增,小站的ECS没能经的起亲们的访问,本站依然没有盈利,如果各位看如果觉着文字不错,还请看官给小站打个赏~~~~~~~~~~~~~!

python十进制转二进制,可指定位数

python 水墨上仙 3588次浏览 已收录 手机上查看

python十进制二进制,可指定位数

# convert a decimal (denary, base 10) integer to a binary string (base 2)
# tested with Python24   vegaseat    6/1/2005
def Denary2Binary(n):
    '''convert denary integer n to binary string bStr'''
    bStr = ''
    if n < 0: raise ValueError, "must be a positive integer" if n == 0: return '0' while n > 0:
        bStr = str(n % 2) + bStr
        n = n >> 1
    return bStr
def int2bin(n, count=24):
    """returns the binary of integer n, using count number of digits"""
    return "".join([str((n >> y) & 1) for y in range(count-1, -1, -1)])
# this test runs when used as a standalone program, but not as an imported module
# let's say you save this module as den2bin.py and use it in another program
# when you import den2bin the __name__ namespace would now be  den2bin  and the
# test would be ignored
if __name__ == '__main__':
    print Denary2Binary(255)  # 11111111

    # convert back to test it
    print int(Denary2Binary(255), 2)  # 255

    print

    # this version formats the binary
    print int2bin(255, 12)  # 000011111111
    # test it
    print int("000011111111", 2)  # 255

    print
    # check the exceptions
    print Denary2Binary(0)
    print Denary2Binary(-5)  # should give a ValueError

 


开心洋葱 , 版权所有丨如未注明 , 均为原创丨未经授权请勿修改 , 转载请注明python十进制转二进制,可指定位数
喜欢 (0)
[开心洋葱]
分享 (0)
水墨上仙
关于作者:
水墨上仙
……
加载中……