python的几个小实例

• 有参函数

  def login(username, password):
name = input("请输入您的姓名").strip()
pwd = input("请输入您的密码").strip()
if name == username and pwd == password:
print("登录成功")
else:
print("登录失败")
username = 'zhanyafeng'
password = '123456'
login(username, password)




• 七段数码管数字

  # import turtle
# import time
# #先完成一个数字的显示
# t = turtle.Pen()
# t.shape('turtle')
#
# def drawline(flag):
# if flag:
# t.down()
# else:
# t.up()
# t.fd(40)
# t.right(90)
#
# def drawdigit(num):
# drawline(True) if num in [2,3,4,5,6,8,9] else drawline(False)
# drawline(True) if num in [0, 1, 3, 4, 5, 6, 7, 8, 9] else drawline(False)
# drawline(True) if num in [0, 2, 3, 5, 6, 8, 9] else drawline(False)
# drawline(True) if num in [0, 2, 6, 8] else drawline(False)
# t.left(90)
# drawline(True) if num in [0, 4, 5, 6, 8, 9] else drawline(False)
# drawline(True) if num in [0, 2, 3, 5, 6, 7, 8, 9] else drawline(False)
# drawline(True) if num in [0, 1, 2, 3, 4, 6, 8, 9] else drawline(False)
#
# drawdigit(2)
# turtle.done()
# 到此一个数字的绘画就完成了
# 接下来绘画多个数字
# import turtle
# import time
#
# t = turtle.Pen()
# t.shape('turtle')
# t.color('red')
# t.pensize(5)
# t.speed(0)#加快小乌龟绘画速度
# t.up()
# t.backward(250)
# t.down()
#
# def drawgap():#想把显示的数字更加美观一点，想添加空格
# t.up()
# t.fd(5)
#
# def drawline(flag):
# drawgap()#在开始落笔前就开始插入空格
# if flag:
# t.down()
# else:
# t.up()
# t.fd(40)
# drawgap()#同理前进后也要间隔
# t.right(90)
#
#
# def drawdigit(num):
# drawline(True) if num in [2,3,4,5,6,8,9] else drawline(False)
# drawline(True) if num in [0, 1, 3, 4, 5, 6, 7, 8, 9] else drawline(False)
# drawline(True) if num in [0, 2, 3, 5, 6, 8, 9] else drawline(False)
# drawline(True) if num in [0, 2, 6, 8] else drawline(False)
# t.left(90)
# drawline(True) if num in [0, 4, 5, 6, 8, 9] else drawline(False)
# drawline(True) if num in [0, 2, 3, 5, 6, 7, 8, 9] else drawline(False)
# drawline(True) if num in [0, 1, 2, 3, 4, 6, 8, 9] else drawline(False)
# t.up()#这三步小乌龟向前移动
# t.left(180)
# t.forward(20)
#
#
#
# def get_data(data):#现在想把例如20191024绘画出来
# for i in data:
# drawdigit(eval(i))
#
# get_data("20191024")#若此时不修改小乌龟会在原地绘画20191024，所以把小乌龟位置向前移动
# turtle.done()
# 到此绘画20191024已经完成
# 接下来想添加年月日
import turtle
import time
turtle.setup(800,600)
t = turtle.Pen()
t.shape('turtle')
t.color('red')
t.pensize(5)
t.speed(0) # 加快小乌龟绘画速度
t.up()
t.backward(300)
t.down()
def drawgap(): # 想把显示的数字更加美观一点，想添加空格
t.up()
t.fd(5)
def drawline(flag):
drawgap() # 在开始落笔前就开始插入空格
if flag:
t.down()
else:
t.up()
t.fd(40)
drawgap() # 同理前进后也要间隔
t.right(90)
def drawdigit(num):
drawline(True) if num in [2, 3, 4, 5, 6, 8, 9] else drawline(False)
drawline(True) if num in [0, 1, 3, 4, 5, 6, 7, 8, 9] else drawline(False)
drawline(True) if num in [0, 2, 3, 5, 6, 8, 9] else drawline(False)
drawline(True) if num in [0, 2, 6, 8] else drawline(False)
t.left(90)
drawline(True) if num in [0, 4, 5, 6, 8, 9] else drawline(False)
drawline(True) if num in [0, 2, 3, 5, 6, 7, 8, 9] else drawline(False)
drawline(True) if num in [0, 1, 2, 3, 4, 6, 8, 9] else drawline(False)
t.up() # 这三步小乌龟向前移动
t.left(180)
t.forward(20)
def drawdate(date): # 为了方便区分，我们把日期格式设为%Y-%m=%d+,此时要利用到time.gmtime()以及time.strftime()
t.color('red')
for i in date:
if i == "-":
t.write('年', fOnt=("Arial", 25, "normal"))
t.color('blue')
t.fd(40)
elif i == "/":
t.write('月', fOnt=("Arial", 25, "normal"))
t.color('black')
t.fd(40)
elif i == "+":
t.write('日', fOnt=("Arial", 25, "normal"))
else:
drawdigit(eval(i))
def programmer():
t.up()
t.goto(-280, 100)
t.down()
t.color('black')
t.write('广大程序员节日快乐，占亚峰真牛皮！！！', fOnt=("Arial", 25, "normal"))
t.up()
t.goto(0, 0)
t.down()#将画笔返回原位
programmer()
def main():
t.color('red')
t.pensize(5)
t.speed(0) # 加快小乌龟绘画速度
t.up()
t.backward(300)
t.down()
drawdate(time.strftime("%Y-%m/%d+", time.gmtime()))
t.hideturtle()
main()
turtle.done()
#实现完成