Python case 2 - turtle library to draw pentagram V_2.0

Hello everyone, I'm cabbage carrot balls

Life is too short, Python is a song

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project import

Version 2.0: Observe the program code of version V1.0, whether the while loop can be used to make version 1.0 more concise

Project analysis - clarifying ideas

1. Analyze the problem: The computational part of the analysis problem
2. Defining the problem: dividing the input, processing, and output parts of the problem (IPO)
3. Designing Algorithms: The Heart of the Computational Section

Knowledge point learning – from the ground up

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loop statement

• statement of the control program
• The judgment program determines whether a program is executed again one or more times
• Instructions

while(<条件>)：
	<语句块1>
<语句块2>

• When the condition is true (True), execute statement block 1, when the statement is false (Flase), exit the loop

Hands-on programming – hands-on, let the program run

reference code

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"""
作者：白菜胡萝丸子
版本2.0：观察V1.0版本的程序代码，是否能用while循环使版本1.0更加简介
"""
import turtle


def main():
    # 设置画笔绘制速度
    turtle.speed(2)
    # 设置循环的判断条件
    i = 0

    # 绘制五角星的循环语句
    while i < 5:
        turtle.forward(100)
        turtle.right(144)

        i = i + 1
    # 设置点击关闭窗口
    turtle.exitonclick()


if __name__ == "__main__":
    main()

Results of the

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Take it to the next level - let the program evolve a little bit

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The loop statement greatly simplifies the code of the pentagram, but if you want the program to be more modular, for example, encapsulate the program for drawing the pentagram into a function, and then enter the size of the pentagram to make the program of the pentagram more flexible. Well, let the program evolve a little bit!