Python:用字符串替换数值

Question

我正在尝试用字符串替换用户输入的值以使输出更清晰

我认为 if 语句会有帮助，但我不确定它如何与我的预期输出结合起来

 def main() :
    number = int(input("Enter your number: "))
    base = int(input("Convert to\n" \
    "   Binary[2] - Octal[8] - Hexadecimal[16]: "))

    if base == 2 :
        "binary"
     elif base == 8 :
        "octal"
    else:
        "hexadecimal"

    print("\n"+str(number) +" in "+ str(base) + " is: " + str(convert(number, 10, base)))


  def convert(fromNum, fromBase, toBase) :
    toNum = 0
    power = 0

    while fromNum > 0 :
        toNum += fromBase ** power * (fromNum % toBase)
        fromNum //= toBase
        power += 1
    return toNum

main()

我想要得到什么:如果用户输入 5 作为数字，2 作为转换。输出将是:“5的二进制是:101”

Answer 1

尝试

 def main() :
    number = int(input("Enter your number: "))
    base = int(input("Convert to\n" \
    "   Binary[2] - Octal[8] - Hexadecimal[16]: "))
    base_string = "None"        

    if base == 2 :
        base_string = "binary"
     elif base == 8 :
        base_string = "octal"
    else:
        base_string = "hexadecimal"

    print("\n {} in {} is: {}".format(str(number), base_string, str(convert(number, 10, base))))


  def convert(fromNum, fromBase, toBase) :
    toNum = 0
    power = 0

    while fromNum > 0 :
        toNum += fromBase ** power * (fromNum % toBase)
        fromNum //= toBase
        power += 1
    return toNum

main()

您的问题是 if 语句中的“二进制”部分。它实际上对您的代码和输出都没有影响。您必须将文字表示形式(“二进制”，...)存储在某个变量(“base_string”)中。然后您可以在输出中使用此变量。