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diy1.py

-students = ["悟空", "小贝", "八戒", "波奇"]
-
-# 八戒因为要回老家，转学了，请将八戒从班级列表名单中删除
-students.pop(2)
-print(students)
-# 班上来了一个新同学，名叫"诺依n"，请将"诺依"加入到班级名单里面
-students.extend(["诺依"])
-print(students)
-# 班上准备开始辩论赛，分为红（red）、蓝(blue)组，
-# 请用切片将班级列表的前2名加入到红组，后2名加入到蓝组
-red = students[0:2]
-blue = students[2:4]
-print(red)
-print(blue)
+# import turtle
+# screen=turtle.Screen()
+# screen.bgcolor("blue")
+#pen=turtle.Pen()
+#pen.penup()
+#pen.goto(100,-100)
+#pen.pendown()
+#pen.write("春晓\n春眠不觉晓\n处处闻啼鸟\n夜来风雨声\n花落知多少",font=("Times",20,"normal"))
+#pen.hideturtle()
+# pen1=turtle.Pen()
+# pen1.pensize(5)
+# pen1.pencolor("red")
+# len=screen.textinput("提示","你需要多大的爱心?")
+# lovesize=int(len)
+# pen1.left(45)
+# pen1.forward(2*lovesize)
+# pen1.circle(lovesize,180)
+# pen1.right(90)
+# pen1.circle(lovesize,180)
+# pen1.forward(2*lovesize)
+# pen1.hideturtle()
+# turtle.done()
+username = "qwe"
+userpassword = 123456
+while True:
+    c = input("请输入账号：") 
+    d = input("请输入密码：")
+    if username==c and userpassword==d:
+        print("登陆成功")
+        break
+    if username !=c:
+        print("账号错误")
+        continue
+    if userpassword !=d:    
+        print("密码错误")
+print("欢迎来到贝尔编程")
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twenty.py

+# username = "qwe"
+# userpassword = 123456
+# while True:
+#     if i = 3:
+#         c = input("请输入账号：") 
+#         d = input("请输入密码：")
+#         i-=1
+#         if username==c and userpassword==d:
+#             print("登陆成功")
+#             break
+#         if username !=c: str
+#             print("账号错误")
+#             print("你还有"+str(i)+"次机会")
+#             continue 
+#         if userpassword !=d:    
+#             print("密码错误")
+#             print("你还有"+str(i)+"次机会")
+#     else:
+#         print("输入错误，机会已用完，请带身份证来我司解锁")
+#         exit()
+# print("欢迎来到贝尔编程")
+
+# import turtle
+# pen=turtle.Pen()
+# screen=turtle.Screen()
+# colrs=["red","orange","yellow","green"]
+# for i in range(1,300):
+#     screen.colr(black)
+#     pen.colrs(i%4)
+#     pen.forward(i)
+#     pen.right(91)
+#     i+=1  
+# pen.hideturtle()
+# turtle.done()
+
+j=1
+i=1
+print(j,'*',i,'=',(j*i))
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