1 a=0
2 while a<3:
3 j=0
4 while j<3:
5 print("*",end="")#行end取消默认换号
6 j+=1
7 print()#列
8 a+=1
9 a=0
10 while a<4:
11 b=0
12 while b <= a:
13 print("*",end="")
14 b+=1
15 print()
16 a+=1
17
18
19 # 1到100所有偶数的和
20 i=0
21 sum1=0
22 while i<=100:
23 if i%2==0:
24 sum1+=i
25 i+=1
26 print(sum1)
27
28 # for 变量 in 集合
29 # 语句
30 # i =0
31 # while i<5:
32 # print(i)
33 # i+=1;
34
35 list=[0,1,2,3,4]
36 for i in list:
37 print(i)
38
39
40 for i in "abfasf":
41 print(i)
42 #range()函数列表生成器
43
44
45 lis1 = range(5)
46 print(lis1)
47 print(lis1[0])
48
49 for i in range(5):
50 print(i)
51
52
53 print("****************")
54 for i in range(3,5,10):
55 print(i)
56
57 for i in range(5,10):
58 print(i)
59
60 print("*-*-*-*-*-*-*-*-*-*-*-*")
61 for i in range(1,10):
62 for j in range(1,10):
63 print(i*j," ",end="")
64 print()
65 # for j in range(1,10):
66 # print(i+"*"+j+"="+i*j)
