Python 调用函数的用户输入始终以进程0结束

我正在尝试制作一个程序，根据用户希望看到的内容显示exp或log函数。因此，如果用户想要体验乐趣，那么他会写1。如果日志有趣，那么2

问题是，在输入程序后，程序总是以“进程结束，退出代码为0”结束，并且没有显示任何功能

解决办法是什么

代码：

import matplotlib.pyplot as plt
import numpy as np


class the_process(object):
 def logfun(self):
    a = 2
    q = 0
    x = np.linspace(-2, 4, 100)
    y = np.log(a ** (np.add(x, q)))

    plt.figure()
    plt.plot(x, y)
    plt.ylabel('$\log(x)$')
    plt.grid(True)
    plt.show()

def expfun(self):
    a = 2
    q = 0
    x = np.linspace(-2, 4, 100)
    y = np.add(np.power(a, x), q)

    plt.figure()
    plt.plot(x, y)
    plt.ylabel('$\exp(x)$')
    plt.grid(True)
    plt.show()

def __init__(self):
    self.a = input(
        "Which function do you want to use? \n\n 1) The first one. \n\n 2) The second one. \n\n Please enter the corresponding number and hit enter >>>>> ")

    if self.a == 1:
        self.expfun()
    elif self.a == 2:
        self.logfun()


a = the_process();

---

示例中的缩进是错误的

expfun（）

和

\uuuu init\uuuu（）

不缩进。另外，您应该将其强制转换为int，以便在

if

import matplotlib.pyplot as plt
import numpy as np


class the_process(object):
    def logfun(self):
        a = 2
        q = 0
        x = np.linspace(-2, 4, 100)
        y = np.log(a ** (np.add(x, q)))

        plt.figure()
        plt.plot(x, y)
        plt.ylabel('$\log(x)$')
        plt.grid(True)
        plt.show()

    def expfun(self):
        a = 2
        q = 0
        x = np.linspace(-2, 4, 100)
        y = np.add(np.power(a, x), q)

        plt.figure()
        plt.plot(x, y)
        plt.ylabel('$\exp(x)$')
        plt.grid(True)
        plt.show()


    def __init__(self):
        self.a = int(input(
            "Which function do you want to use? \n\n 1) The first one. \n\n 2) The second one. \n\n Please enter the corresponding number and hit enter >>>>> "))

        if self.a == 1:
            self.expfun()
        elif self.a == 2:
            self.logfun()


a = the_process()

最后，在我看来，你的问题不应该被构造成一个类，所以你可以考虑这一个：

import matplotlib.pyplot as plt
import numpy as np


class TheProcess(object):
    def log_fun(self):
        a = 2
        q = 0
        x = np.linspace(-2, 4, 100)
        y = np.log(a ** (np.add(x, q)))

        plt.figure()
        plt.plot(x, y)
        plt.ylabel("$\log(x)$")
        plt.grid(True)
        plt.show()

    def exp_fun(self):
        a = 2
        q = 0
        x = np.linspace(-2, 4, 100)
        y = np.add(np.power(a, x), q)

        plt.figure()
        plt.plot(x, y)
        plt.ylabel("$\exp(x)$")
        plt.grid(True)
        plt.show()


chosen_option = int(
    input(
        "Which function do you want to use? \n\n 1) The first one. \n\n 2) The second one. \n\n Please enter the corresponding number and hit enter >>>>> "
    )
)
my_process = TheProcess()
if chosen_option == 1:
    my_process.exp_fun()
elif chosen_option == 2:
    my_process.log_fun()
else:
    print("Exiting...")