Python-100天代码

import turtle


turtle.pensize(4)
turtle.pencolor('red')
turtle.forward(100)
turtle.right(90)
turtle.forward(100)
turtle.right(90)
turtle.forward(100)
turtle.right(90)
turtle.forward(100)
turtle.mainloop()

f = float(input('输入华氏度温度：'))
c = (f - 32) / 1.8
print('%.1f华氏度 = %.1f摄氏度' % (f, c))

import math


radius = float(input('输入圆的半径:')
perimeter = 2 * math.pi * radius
area = math.pi * radius * radius
print('周长：%.2f' % perimeter)
print('面积：%.2f' % area)

year = int(input('输入年份'))
is_leap = year % 4 == 0 and year % 100 != 0 or year % 400 == 0
print(is_leap)

username = input('输入用户名')
password = input('输入口令')
# 如果希望输入口令时，没有回显，可使用getpass模块的getpass函数
# import getpass
# password = getpass.getpass('输入口令')
if nameuser == 'admin' and password == '12345':
    print('身份验证成功！')
else:
    print('身份验证失败！')

"""
f(x) = 3 * x - 5 (x > 1)
f(x) = x + 2 (-1 < x <= 1)
f(x) = 5 * x + 3 (x <-1) 
"""

x = float(input('x = '))
if x > 1:
    y = 3 * x - 5
else:
    if x > -1:
        y = x + 2
    else:
        y = 5 * x + 3
print('f(%.2f) = %.2f' % (x, y))

value = float(input('输入长度：'))
unit = input('输入单位：')
if unit == 'in' or unit == '英寸':
    print('%f 英寸 = %f 厘米' % (value, value * 2.54))
elif unit == 'cm' or unit == '厘米':
    print('%f 厘米 = %f 英寸' % (value, value / 2.54))
else:
    print('输入有效单位！')

from random import randint


face = randint(1, 6)
if face == 1:
    result = '唱歌'
elif face == 2:
    result = '跳舞'
elif face == 3:
    result = '学狗叫'
elif face == 4:
    result = '俯卧撑'
elif face == 5:
    result = '绕口令'
else:
    result = '讲笑话'
print(result)