save project

1.py

+i=3
+n='qqq'
+s=123456
+while True:
+    if i>0:
+        n1=input('用户名')
+        s1=int(input('用户密码'))
+        i-=1
+        if n1==n and s1==s:
+            print('密码正确')
+            break
+        if n1!=n:
+            print('用户名错误')
+        if s1!=s:
+            print('密码错误')
+exit()
+print('欢迎')
\ No newline at end of file

2.py

+h=['red','green','orange','yellow']
+import turtle
+pen=turtle.Pen()
+i=1
+for i in range(300):
+    pen.forward(i)
+    pen.pencolor(h[i%4])
+    pen.right(91)
+    i+=1
+turtle.done()
\ No newline at end of file

3.py

+for a in range(1,10):
+    for j in range(1,a+1):
+        print(j,'*',a,'=',(j*a),end='  ')
+    print()
\ No newline at end of file