代码之家 › 专栏 › 技术社区 › Gusta

如何调用函数:def(dot)和def(dice)from def(main)?

graphics function python

Gusta · 技术社区 · 7 年前

从第三个(主)函数调用前两个函数时遇到问题。我相信我的代码是正确的(忽略大小和x,y坐标)来显示di的五个边,但似乎无法找出如何调用函数。

主要目的是显示DI的五个面。

def dot(c,d):
 #draw each dot 
 circDot1 = Circle(Point(50, 50), 5).setFill('black')
 circDot1.draw(win)
 circDot3 = Circle(Point(50, 100), 5).setFill('black')
 circDot3.draw(win)
 circDot5 = Circle(Point(100, 50), 5).setFill('black')
 circDot5.draw(win)
 circDot7 = Circle(Point(100, 100), 5).setFill('black')
 circDot7.draw(win)
 circDot4 = Circle(Point(75, 75), 5).setFill('black')
 circDot4.draw(win)

def dice(a,b):

 #build the dice
 rectDice = Rectangle(Point(115, 115), Point(275,275))
 rectDice.setFill('pink')
 rectDice.setOutline('pink')
 rectDice.draw(win)


def main():
 # Create window, call dice function
 win = GraphWin("Dice", 400, 400)
 win.setBackground("cyan")
 dice("a","b")

2 回复 | 直到 7 年前

furas 7 年前

几乎没有问题:

你不执行 main() 运行程序,但也许你没有添加这个只是个问题。

win 是局部变量,函数不能访问它们。您应该在错误消息中看到它为 NameError: name 'win' is not defined 在里面 rectDice.draw(win) .

Traceback (most recent call last):
  File "<pyshell#2>", line 30, in <module>
    main()
  File "<pyshell#2>", line 28, in main
    dice("a","b")
  File "<pyshell#2>", line 21, in dice
    rectDice.draw(win)
NameError: name 'win' is not defined

您可以添加 赢 作为论据

def dice(win, a, b):
    #build the dice
    rectDice = Rectangle(Point(115, 115), Point(275,275))
    rectDice.setFill('pink')
    rectDice.setOutline('pink')
    rectDice.draw(win)

def main():
    # Create window, call dice function
    win = GraphWin("Dice", 400, 400)
    win.setBackground("cyan")
    dice(win, "a","b")

或者必须将窗口分配给全局变量-使用 global 在里面 主体()

def dice(a, b):
    #build the dice
    rectDice = Rectangle(Point(115, 115), Point(275,275))
    rectDice.setFill('pink')
    rectDice.setOutline('pink')
    rectDice.draw(win)

def main():
    global win

    # Create window, call dice function
    win = GraphWin("Dice", 400, 400)
    win.setBackground("cyan")
    dice("a", "b")

同样的问题 dot()

在 点() 你还有其他问题。你必须使用 setFill() 在下一行

circDot1 = Circle(Point(50, 50), 5)
circDot1.setFill('black')
circDot1.draw(win)

完整代码:

from graphics import *

def dot(win, c, d):
    #draw each dot 
    circDot1 = Circle(Point(50, 50), 5)
    circDot1.setFill('black')
    circDot1.draw(win)

    circDot3 = Circle(Point(50, 100), 5)
    circDot3.setFill('black')
    circDot3.draw(win)

    circDot5 = Circle(Point(100, 50), 5)
    circDot5.setFill('black')
    circDot5.draw(win)

    circDot7 = Circle(Point(100, 100), 5)
    circDot7.setFill('black')
    circDot7.draw(win)

    circDot4 = Circle(Point(75, 75), 5)
    circDot4.setFill('black')
    circDot4.draw(win)

def dice(win, a, b):
    #build the dice
    rectDice = Rectangle(Point(115, 115), Point(275,275))
    rectDice.setFill('pink')
    rectDice.setOutline('pink')
    rectDice.draw(win)


def main():
    # Create window, call dice function
    win = GraphWin("Dice", 400, 400)
    win.setBackground("cyan")
    dice(win, "a", "b")
    dot(win, "c", "d")

main()

-1

lieahau 7 年前

我认为main()函数甚至都没有被调用。

试着使用这个:

def main():
 # Create window, call dice function
 win = GraphWin("Dice", 400, 400)
 win.setBackground("cyan")
 dice("a","b")

if __name__== "__main__":
 main()

参考: this link