Python-name'；高度'；没有定义

我有一个计算机科学作业，我需要编写一个函数

main（）

，调用函数

drawChessboard（）

，以绘制一个8x8棋盘，用户可以在其中确定棋盘的宽度和高度。我们正在学习函数和模块，我们需要使用多个函数的多个模块。这是我的第一个模块：

from chessboard import *

def main():

    startX, startY = eval(input("Enter the starting coordinates (x, y): "))
    width = input("Enter the width: ")
    height = input("Enter the height: ")
    spaceX = eval(width) / 8
    spaceY = eval(height) / 8

    def variables():
        global startX, startY, width, height, spaceX, spaceY, xLocation, yLocation

    if width == "" and height == "":
        drawChessboard(startX, startY)
    elif height == "":
        drawChessboard(startX, startY, width=eval(width))
    elif width == "":
        drawChessboard(startX, startY, height=eval(height))
    else:
        drawChessboard(startX, startY, eval(width), eval(height))


main()

下面是第二个模块：chessboard.py

import turtle

global startX, startY, width, height, spaceX, spaceY, xLocation, yLocation

def drawRectangle():  # Define draw rectangle function

    turtle.penup()
    turtle.goto(xLocation, yLocation)
    turtle.pendown()
    turtle.left(90)
    turtle.begin_fill()
    turtle.forward(spaceX)
    turtle.left(90)
    turtle.forward(spaceY)
    turtle.left(90)
    turtle.forward(spaceX)
    turtle.left(90)
    turtle.forward(spaceY)
    turtle.end_fill()


def drawAllRectangles(startX, startY):          # function that will draw all rectangles to make up chessboard

    yLocation = startY
    while yLocation <= (height - 2 * spaceY):   # draw rectangles on rows 1, 3, 5, 7
        global xLocation
        xLocation = startX
        while xLocation <= (width - 2 * spaceX):
            drawRectangle()
            xLocation += 2 * spaceX
        yLocation += 2 * spaceY

    turtle.penup()
    turtle.goto(startX + spaceX, startY + spaceY)
    turtle.pendown()
    yLocation = startY + spaceY
    while yLocation <= (height - spaceY):       # draw rectangles on rows 2, 4, 6, 8
        xLocation = startX + spaceX
        while xLocation <= (width - spaceX):
            drawRectangle()
            xLocation += 2 * spaceX
        yLocation += 2 * spaceY

def drawChessboard(startX, startY, width = 250, height = 250):

    import turtle

    turtle.showturtle()         # Draw outside border for chessboard
    turtle.speed(10)
    turtle.penup()
    turtle.goto(startX, startY)
    turtle.pendown()
    turtle.forward(width)
    turtle.left(90)
    turtle.forward(height)
    turtle.left(90)
    turtle.forward(width)
    turtle.left(90)
    turtle.forward(height)

    drawAllRectangles(startX, startY)

    turtle.done()

导入海龟
全局startX、startY、宽度、高度、spaceX、spaceY、X位置、Y位置
def drawRectangle（）：#定义绘制矩形函数
乌龟
乌龟。后藤（xLocation，yLocation）
乌龟
乌龟。左（90）
乌龟，开始填充
乌龟前进（spaceX）
乌龟。左（90）
乌龟。前进（太空）
乌龟。左（90）
乌龟前进（spaceX）
乌龟。左（90）
乌龟。前进（太空）
乌龟
def drawAllRectangles（startX，startY）：#将绘制所有矩形以组成棋盘的函数
位置=星形
而在这个函数中，您使用了两次height

def drawAllRectangles(startX, startY):          # function that will draw all rectangles to make up chessboard

    yLocation = startY
    while yLocation <= (height - 2 * spaceY):   # draw rectangles on rows 1, 3, 5, 7
        global xLocation
        xLocation = startX
        while xLocation <= (width - 2 * spaceX):
            drawRectangle()
            xLocation += 2 * spaceX
        yLocation += 2 * spaceY

    turtle.penup()
    turtle.goto(startX + spaceX, startY + spaceY)
    turtle.pendown()
    yLocation = startY + spaceY
    while yLocation <= (height - spaceY):       # draw rectangles on rows 2, 4, 6, 8
        xLocation = startX + spaceX
        while xLocation <= (width - spaceX):
            drawRectangle()
            xLocation += 2 * spaceX
        yLocation += 2 * spaceY

所以你需要在这里做同样的事情

def drawAllRectangles(startX, startY, width, height): 

因此，当调用drawAllRectangles时，请确保传入这4个变量

另外，将所有导入内容移动到文件的顶部。并查看eval的功能（）。在你的程序中任何地方都不需要globals或eval

当我删除全局变量时，所有的变量都没有定义以供使用，我
获取错误。我能为此做些什么

我同意@anon（+1）关于globals和代码中的
eval（）。下面是我对sans globals代码的修改——您应该能够根据需要将其分解回两个单独的文件。您需要（重新）阅读
global
关键字的作用和使用位置。我知道
eval（）
输入元组很方便，但你应该找到另一种方法。我将其他
eval（）
调用替换为
int（）
：

导入海龟
def drawRectangle（xLocation、yLocation、spaceX、spaceY）：
乌龟
乌龟。后藤（xLocation，yLocation）
乌龟
乌龟，开始填充
对于范围（2）内的uu：
乌龟前进（spaceX）
乌龟。左（90）
乌龟。前进（太空）
乌龟。左（90）
乌龟
def DRAWALL矩形（起点、起点、宽度、高度）：
“”“绘制所有矩形以组成棋盘”“”
spaceX=宽度/8
spaceY=高度/8
位置=星形
当我删除全局变量时，所有变量都没有定义以供使用，因此会出现错误。我能为此做些什么？
def drawAllRectangles(startX, startY, width, height): 

import turtle

def drawRectangle(xLocation, yLocation, spaceX, spaceY):

    turtle.penup()
    turtle.goto(xLocation, yLocation)
    turtle.pendown()

    turtle.begin_fill()

    for _ in range(2):
        turtle.forward(spaceX)
        turtle.left(90)
        turtle.forward(spaceY)
        turtle.left(90)

    turtle.end_fill()

def drawAllRectangles(startX, startY, width, height):
    """ Draw all rectangles to make up chessboard """

    spaceX = width / 8
    spaceY = height / 8

    yLocation = startY

    while yLocation <= (height - 2 * spaceY):  # draw rectangles on rows 1, 3, 5, 7
        xLocation = startX
        while xLocation <= (width - 2 * spaceX):
            drawRectangle(xLocation, yLocation, spaceX, spaceY)
            xLocation += 2 * spaceX
        yLocation += 2 * spaceY

    turtle.penup()
    turtle.goto(startX + spaceX, startY + spaceY)
    turtle.pendown()

    yLocation = startY + spaceY

    while yLocation <= (height - spaceY):  # draw rectangles on rows 2, 4, 6, 8
        xLocation = startX + spaceX
        while xLocation <= (width - spaceX):
            drawRectangle(xLocation, yLocation, spaceX, spaceY)
            xLocation += 2 * spaceX
        yLocation += 2 * spaceY

def drawChessboard(startX, startY, width=250, height=250):

    """ Draw outside border for chessboard """

    turtle.penup()
    turtle.goto(startX, startY)
    turtle.pendown()

    for _ in range(2):
        turtle.forward(width)
        turtle.left(90)
        turtle.forward(height)
        turtle.left(90)

    drawAllRectangles(startX, startY, width, height)

def main():

    startX, startY = eval(input("Enter the starting coordinates (x, y): "))
    width = input("Enter the width: ")
    height = input("Enter the height: ")

    turtle.speed('fastest')

    if width == "" and height == "":
        drawChessboard(startX, startY)
    elif height == "":
        drawChessboard(startX, startY, width=int(width))
    elif width == "":
        drawChessboard(startX, startY, height=int(height))
    else:
        drawChessboard(startX, startY, int(width), int(height))

    turtle.done()

main()