Linux报错合集

求平方

numbers = [1, 2, 3, 4, 5]
squard_numbers = [num**2 for num in numbers]
print(squard_numbers)

绘制同心圆

import turtle

turtle.circle(50)   #画一个圆
turtle.penup()  #画笔悬空
turtle.goto(0, -50) #画笔移动（由于悬空，没有移动痕迹）
turtle.pendown()    #画笔放下

turtle.circle(100)
turtle.penup()
turtle.goto(0, -100)
turtle.pendown()

turtle.circle(150)

只画一个圆时，不需要

turtle.penup()
turtle.goto(0, -50)
turtle.pendown()

为了实现同心圆，需要加上。
** 不加后果 **

import turtle

turtle.circle(50)
# turtle.penup()
# turtle.goto(0, -50)
# turtle.pendown()

turtle.circle(100)
turtle.penup()
turtle.goto(0, -100)
turtle.pendown()

turtle.circle(150)

输出：

import turtle

turtle.circle(50)
# turtle.penup()
# turtle.goto(0, -50)
# turtle.pendown()

turtle.circle(100)
# turtle.penup()
# turtle.goto(0, -100)
# turtle.pendown()

turtle.circle(150)

输出：