九九乘法表及其语法基础

 1 #倒三角形
 2 line=4
 3 while line>0:
 4     tmp=line
 5     while tmp>0:
 6         print("*",end=" ")
 7         tmp-=1
 8     print()
 9     line-=1
10 
11 
12 #正三角形
13 line=1
14 while line<5:
15     tmp=1
16     while tmp<line:
17         print("*",end=" ")
18         tmp+=1
19     print()
20     line+=1
21 
22 
23 #正方形
24 line=1
25 while line<5:
26     tmp=1
27     while tmp<5:
28         print("*",end=" ")
29         tmp+=1
30     print()
31     line+=1
32 
33 
34 #九九乘法表    
35 first=1
36 while first<=9:
37     sec=1
38     while sec<=first:
39         print(str(sec)+"*"+str(first)+"*"+str(sec*first),end="\t")
40         sec+=1
41     print()
42     first+=1