import turtle turtle.pensize(2) turtle.circle(10) turtle.circle(40) turtle.circle(80) turtle.circle(160)

from turtle import * color('red','red') begin_fill() for i in range(5): fd(200) rt(144) end_fill()

tempstr = input('请输入带有符号的温度值:') if tempstr[-1] in ['F','f']: C = (eval(tempstr[0:-1]) - 32)/1.8 print('转换后的温度是{:.2f}C'.format(C)) elif tempstr[-1]...

圆的面积计算公式。圆的面积（S）等于圆周率（π）乘以半径（r）的平方，即S=πr² r = 25 area = 3.1415 * r * r print(area) print('{:.2f}'.format(area))