Python input() 函数无法正常运行 : doesn't seem to record any input. 也许是 Linux 问题？

Question

这个问题已经有答案了:

What's the difference between `raw_input()` and `input()` in Python 3? [duplicate] (6 个回答)

已关闭 4 年前。

我在运行我编写的代码时似乎遇到了问题:

def acidhenderson():
    ka = input("Enter a Ka value:  ")
    pka = math.log(float(scientific_string(ka)), 10) * -1
    base = float(scientific_string(input("Enter base concentration:  ")))
    acid = float(scientific_string(input("Enter acid concentration:  ")))
    ph = pka + math.log((base / acid), 10)
    print("pH = " + str('%.2f' % ph) + ".")
    print("")
    main()

def main():
    print("1: Calculate pOH of a buffer from Kb (Henderson Hasselbalch equation)")
    print("2: Calculate pH of a buffer from Ka (Henderson Hasselbalch equation)")
    print("3: Calculate the ratio of base/acid from pH and Ka")
    print("4: Solve an ICE table")
    choice = input("What would you like to do?:  ")
    if choice == "1":
        basehenderson()
    if choice == "2":
        acidhenderson()
    if choice == "3":
        acid_base_ratio()
    if choice == "4":
        icesolver()
    if choice == "exit" or "quit":
        return
main()

def scientific_string(string):
    string_list = list(string)
    i = 0
    while i < len(string_list):
        if string_list[i] == "^":
            string_list[i] = "**"
            return_var = ''.join(string_list)
            return eval(return_var)
        i = i + 1
    return_var = ''.join(string_list)
    return eval(return_var)

如果我输入数字2，它应该转到函数acidhenderson()(我没有放入其他函数，因为它会占用很多空间)，但在linux中它只是返回到下一行，如下所示:

root@debian:~/Documents/code/eq# python equilibrium.py 
1: Calculate pOH of a buffer from Kb (Henderson Hasselbalch equation)
2: Calculate pH of a buffer from Ka (Henderson Hasselbalch equation)
3: Calculate the ratio of base/acid from pH and Ka
4: Solve an ICE table
What would you like to do?:  2
root@debian:~/Documents/code/eq#

我对 Linux 比较陌生，但我认为这可能是 Linux 问题而不是 python 代码问题，但我不太确定。有人可以帮忙吗？

Answer 1

最佳镜头，您正在使用:

Python 2.x:

choice = raw_input("What would you like to do?:  ")  # to have the input in str
if choice == "1":
    basehenderson()
if choice == "2":
    acidhenderson()
if choice == "3":
    acid_base_ratio()
if choice == "4":
    icesolver()
if choice == "exit" or "quit":
    return