进制转换

更新于
二进制、十进制、十六进制之间的相互转换。
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base = [str(x) for x in range(10)] + [chr(x) for x in range(ord('A'), ord('A')+6)]

# 十进制 to 二进制
def dec2bin(string_num):
    num = int(string_num)
    mid = []
    while True:
        if num == 0: break
        num, rem = divmod(num, 2)
        mid.append(base[rem])
    return ''.join([str(x) for x in mid[::-1]])
    # bin(string_num)

# 十进制 to 十六进制
def dec2hex(string_num):
    num = int(string_num)
    if num == 0:
        return '0'
    mid = []
    while True:
        if num == 0: break
        num, rem = divmod(num, 16)
        mid.append(base[rem])
    return ''.join([str(x) for x in mid[::-1]])
    # return hex(string_num)

# 二进制 to 十进制
def bin2dec(string_num):
    return str(int(string_num, 2))

# 二进制 to 十六进制
def bin2hex(string_num):
    return dec2hex(bin2dec(string_num))
    # hex(int(string_num, 2))

# 十六进制 to 二进制
def hex2bin(string_num):
    return dec2bin(hex2dec(string_num.upper()))
    # return bin(int(string_num.upper(), 16))

# 十六进制 to 十进制
def hex2dec(string_num):
    return str(int(string_num.upper(), 16))
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