無法讓python腳本輸出圖形？

我是這個平臺以及整個軟體開發和編碼的完全新手。我需要一些幫助來讓我的 python 腳本作業并輸出一個圖形。我讓它在 MATLAB 中作業，而不是在 Python 中作業，當我在 VSCode 中運行除錯時，沒有任何錯誤，但它沒有按我想要的那樣作業。

由于某種原因，在繪圖部分它沒有決議 max_range（黃色波浪線），但它在代碼的其他地方決議。不知道這個是怎么破解的？

我的程式在 GitHub 的一個開放存盤庫中，所以如果可以，請查看并提供幫助！

https://github.com/ashfletch/projectile-motion-project/blob/main/projectile_motion/projectile.py

我最終想讓程式與 GUI 一起作業，但我還沒有遇到那個障礙。

謝謝

灰

python 腳本：projectile_motion.py

import argparse
import logging
import math
import os
import sys
import tkinter as tk
from tkinter import filedialog, PhotoImage

import matplotlib.pylab as plt
import numpy as np

def trajectory(x0: int, y0: int, v0: int, theta: int, g: float) -> tuple:
    launch_angle = (theta * (math.pi / 180)) # Converts launch angle into radians
    max_range = int(((v0**2) / g) * (math.sin(2 * launch_angle))) # Calculates range in x-direction (using vector multiplication)
    x_step = int(max_range / 100) # Calculates step, using 100 values for plotting up to the range
    x_values = []
    for value in range(x0, max_range, x_step):
        x_values.append(value)
    
    y_values = []
    for x in x_values:
        y_values.append(((x * math.tan(launch_angle)) - g / (2 * (v0**2) *
         (math.cos(launch_angle))**2) * x**2)   y0)
    return (x_values, y_values)


def projectilemotion(x0: int, y0: int, v0: int, theta: int, g: float):
    pass
    """projectlemotion requires 5 user input arguments which are as follows;
    Args:
        x0: Initial displacement in 'x' domain in [m].
        y0: Initial displacement in 'y' domain in [m].
        v0: Initial velocity of projectile in [m/s].
        theta: launch angle of projectile in [degrees]
        g: The acceleration due to gravity for either Earth or Moon in [m/s**2].
    Returns:
        A plotted trajectory of the projectile under the conditions defined by
          the args above, calculating the following outputs:
        
        xPeak: the value of x [m] at which the yPeak is achieved.
        yPeak: the maximum displacement in y-direction [m].
        maxRange: the maximum displacement in x-direction [m].
    
    Raises:
        Error: 
    """ 

def plot(x_values, y_values):
    plt.plot(x_values, y_values)
    plt.axis([0, max_range, 0, max(y_values)])
    plt.xlabel('Range [m]')
    plt.ylabel('Height [m]')
    plt.show()


if __name__ == '__main__':
    trajectory(0, 0, 940, 45, 9.81)

uj5u.com熱心網友回復：

Max_range 未在您提供的代碼中定義。你忘記了一些事情。此外，您不需要 math 模塊，因為您有 numpy. 所以，我用“numpy”替換了涉及“math”的陳述句。這是您的代碼的作業版本： 注意：我注釋掉了不必要的匯入。

#import argparse # For the moment, you don't use it. But you can uncomment it later.
#import logging
#import math # you don't need it since you have numpy
#import os
#import sys
#import tkinter as tk
#from tkinter import filedialog, PhotoImage

import matplotlib.pylab as plt
import numpy as np

def trajectory(x0: int, y0: int, v0: int, theta: int, g: float) -> tuple:
    launch_angle = (theta * (np.pi / 180)) # Converts launch angle into radians
    max_range = int(((v0**2) / g) * (np.sin(2 * launch_angle))) # Calculates range in x-direction (using vector multiplication)
    x_step = int(max_range / 100) # Calculates step, using 100 values for plotting up to the range
    x_values = []
    for value in range(x0, max_range, x_step):
        x_values.append(value)
    
    y_values = []
    for x in x_values:
        y_values.append(((x * np.tan(launch_angle)) - g / (2 * (v0**2) *
         (np.cos(launch_angle))**2) * x**2)   y0)
    return (x_values, y_values)


def projectilemotion(x0: int, y0: int, v0: int, theta: int, g: float):
    pass
    """projectlemotion requires 5 user input arguments which are as follows;
    Args:
        x0: Initial displacement in 'x' domain in [m].
        y0: Initial displacement in 'y' domain in [m].
        v0: Initial velocity of projectile in [m/s].
        theta: launch angle of projectile in [degrees]
        g: The acceleration due to gravity for either Earth or Moon in [m/s**2].
    Returns:
        A plotted trajectory of the projectile under the conditions defined by
          the args above, calculating the following outputs:
        
        xPeak: the value of x [m] at which the yPeak is achieved.
        yPeak: the maximum displacement in y-direction [m].
        maxRange: the maximum displacement in x-direction [m].
    
    Raises:
        Error: 
    """ 

def plot(x_values, y_values):
    plt.plot(x_values, y_values)

    #plt.axis([0, max_range, 0, max(y_values)]) 
    #Commented because max_range is nowhere defined
    
    plt.xlabel('Range [m]')
    plt.ylabel('Height [m]')
    plt.show()


if __name__ == '__main__':
    x_values, y_values= trajectory(0, 0, 940, 45, 9.81)
    # because trajectory returns 2 vectors...

    # and you forgot to call plot
    plot(x_values,y_values)

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