Question

这是我的代码使用三角函数来查找三角形上缺少的边。它的工作原理是使用SOHCAHTOA找到这些边。代码的问题在于，当我尝试运行代码时，当我调用用户定义的函数时，它会给我一个无效的语法：＆＃34; get_method＆＃34;。请问您能告诉代码有什么问题，以及如何解决我的程序中出现的这个一致问题。

import math

def get_method(question, method):
    print("Lable the right-angle triangle.")
    question = input("What are you trying to find? Type 'h' for hypotenuse, 'a' for adjacent or 'o' for opposite.").lower().strip()
    method = ""
    if question == "h":
        opposite_verify = input("Do you have the length of the opposite?\n"
                              "Type 'yes' or 'no'").strip().lower()
        if opposite_verify == "yes":
            method = "sine"
        elif opposite_verify == "no":
            adjacent_verify = input("Do you have the length of the adjacent?\n"
                              "Type 'yes' or 'no'").strip().lower()
            if adjacent_verify == "yes":
                method = "cosine"
            else:
                print("There's no way to solve this.")

    elif question == "a":
        hypotenuse_verify = input("Do you have the length of the hypotenuse?\n"
                              "Type 'yes' or 'no'").strip().lower()
        if hypotenuse_verify == "yes":
            method = "cosine"
        elif hypotenuse_verify == "no":
            opposite_verify = input("Do you have the length of the opposite?\n"
                              "Type 'yes' or 'no'").strip().lower()
            if opposite_verify == "yes":
                method = "tan"
            else:
                print("There's no way to solve this.")

    elif question == "o":
        hypotenuse_verify = input("Do you have the length of the hypotenuse?\n"
                              "Type 'yes' or 'no'").strip().lower()
        if hypotenuse_verify == "yes":
            method = "sine"
        elif hypotenuse_verify == "no":
            adjacent_verify = input("Do you have the length of the adjacent?\n"
                              "Type 'yes' or 'no'").strip().lower()
            if adjacent_verify == "yes":
                method = "tan"
            else:
                print("There's no way to solve this.")

    return method, question

def main(question, method):
    angle = float(input("What is the degrees of the angle?"))
    angle /= (math.pi / 180)
    if method == "sine" and question == "h":
        opposite = float(input("What is length of the opposite angle?"))
        hypotenuse = opposite / (math.sin(angle))
        print("The length of the hypotenuse is {}".format(hypotenuse))
    elif method == "sine" and question == "o":
        hypotenuse = float(input("What is the length of the hypotenuse?"))
        opposite = hypotenuse * (math.sin(angle))
        print("The length of the opposite is {}".format(opposite))
    elif method == "cosine" and question == "a":
        hypotenuse = float(input("What is the length of the hypotenuse?"))
        ajacent = hypotenuse * (math.cos(angle))
        print("The length of the ajacent is {}".format(ajacent))
    elif method == "cosine" and question == "h":
        ajacent = float(input("What is the length of the ajacent?"))
        hypotenuse = ajacent / (math.cos(angle))
        print("The length of the hypotenuse is {}".format(hypotenuse))
    elif method == "tan" and question == "o":
        ajacent = float(input("What is the length of the ajacent?"))
        opposite = ajacent * (math.tan(angle))
        print("The length of the opposte is {}".format(opposite))
    elif method == "tan" and question == "a":
        opposite = float(input("What is the length z"))


get_method(question, method)
main(question, method)

您可能会看到我将变量传入函数时遇到问题。是的，我知道我的代码效率很低，但我只是新编码，所以让我有些松懈。

Answer 1

由于get_method()似乎是问题所在，让我们来看看它。首先，你传递的参数是你忽略并重置的，所以将参数抛给这个函数 - 定义并调用它而不带参数。

我已经为get_method()代码添加了几个辅助函数：

import sys

def str_input(prompt=None):
    return input(prompt).lower().strip()

def boolean_input(prompt=None):
    return input(prompt + "Type 'yes' or 'no': ").lower().strip() == "yes"

def get_method():
    print("Label the right-angle triangle.")

    question = str_input("What are you trying to find? Type 'h' for hypotenuse, 'a' for adjacent or 'o' for opposite: ")

    method = ""

    if question == "h":
        opposite_verify = boolean_input("Do you have the length of the opposite?\n")

        if opposite_verify:
            method = "sine"
        else:
            adjacent_verify = boolean_input("Do you have the length of the adjacent?\n")

            if adjacent_verify:
                method = "cosine"
            else:
                sys.exit("There's no way to solve this.")

    elif question == "a":
        hypotenuse_verify = boolean_input("Do you have the length of the hypotenuse?\n")

        if hypotenuse_verify:
            method = "cosine"
        else:
            opposite_verify = boolean_input("Do you have the length of the opposite?\n")

            if opposite_verify:
                method = "tan"
            else:
                sys.exit("There's no way to solve this.")

    elif question == "o":
        hypotenuse_verify = boolean_input("Do you have the length of the hypotenuse?\n")

        if hypotenuse_verify:
            method = "sine"
        else:
            adjacent_verify = boolean_input("Do you have the length of the adjacent?\n")

            if adjacent_verify:
                method = "tan"
            else:
                sys.exit("There's no way to solve this.")

    return method, question

现在您可以通过以下方式致电：

method, question = get_method()

将变量传递给函数

1 个答案: