Question

#Conversion from Hex to Bin
def gethex(hexadecimal1):
       numbintotal=' '
       for i in range(len(hexadecimal1)):              
              numbin1=hexadecimal1[i]
              if(numbin1=='0'):
                  result='0000'
              elif(numbin1=='1'):
                  result='0001'
              elif(numbin1=='2'):
                   result='0010'
              elif(numbin1=='3'):
                   result='0011'
              elif(numbin1=='4'):
                   result='0100'
              elif(numbin1=='5'):
                  result='0101'
              elif(numbin1=='6'):
                   result='0110'
              elif(numbin1=='7'):
                   result='0111'
              elif(numbin1=='8'):
                   result='1000'
              elif(numbin1=='9'):
                   result='1001'
              elif(numbin1=='a'):
                   result='1010'
              elif(numbin1=='b'):
                   result='1011'
              elif(numbin1=='c'):
                   result='1100'
              elif(numbin1=='d'):
                   result='1101'
              elif(numbin1=='e'):
                   result='1110'
              elif(numbin1=='f'):
                   result='1111'
              elif(numbin1=='q'):
#Get hexadecimal
while(numhex!='q'):
    numhex=raw_input('Enter a hexadecimal number (q to quit): ')
    numbin= gethex(numhex)
    if(numhex=='q'):
        print(numbin)
    else:
        print('The binary number is:'+ numbin)


                   result='Program shutting down...'
              else:
                   result='Please type in a hexadecimal number'
              numbintotal= numbintotal + result
       return numbintotal


#Create a varaible
numhex='0'
results='0'
numbin1='0'

如上所示，我得到如何从十六进制转换为二进制，但我不确定如何以二进制到十六进制的方式执行此操作？请注意，你不能使用任何Python函数，因为这只是一个简单的方法，所以我只是让你知道！我想在代码中完全相反，例如numbin1 == 0001和result = 1.请帮助我，非常感谢！这是PYTHON 2.7！

Answer 1

尝试使用此功能。

# "Copyright Notice", please do not remove.
# Written by Kevin Ng
# The full tutorial on this subject can be found @ http://kevinhng86.iblog.website or http://programming.world.edu.
# This source code file is a part of Kevin Ng's Z library.
# This source code is licenses under CCDL-1.0  A copy of CDDL1.0 can be found at https://opensource.org/licenses/CDDL-1.0
# End "Copyright Notice"
def binhexZ(invalue):
    wmap = {"0000": "0",
            "0001": "1",
            "0010": "2",
            "0011": "3",
            "0100": "4",
            "0101": "5",
            "0110": "6",
            "0111": "7",
            "1000": "8",
            "1001": "9",
            "1010": "A",
            "1011": "B",
            "1100": "C",
            "1101": "D",
            "1110": "E",
            "1111": "F"
            }
    i = 0
    output = ""

    while (len(invalue) % 4 != 0):
        invalue = "0" + invalue

    while (i < len(invalue)):
        output = output + wmap[invalue[i:i + 4]]
        i = i + 4

    output = output.lstrip("0")
    output = "0" if len(output) == 0 else output

    return output

二进制到十六进制转换

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