print "\nFFFFFFFFFFfor循环 FFFFFFFFFF"
# for-loop打印九九乘法表,金字塔形状 rows = range(1,10) cols = range(1,10) row, col = 1,1for row in rows: for col in cols: if col <= row: print "%s * %s = %s\t"% (row, col, row * col), print #打印一个空行# ----------------------print "\nfor循环中的continue和break使用" i = 3for x in range(10): if x == i: continue #不执行当次,直接执行下一次 elif x == 8: break #退出整个for循环 else: print x, #加个逗号，打印时不换行print "\n\nwwwwwwww python中的while循环 wwwwwwwwww"# while-loop打印九九乘法表,金字塔形状 r = 1while r <= len(rows): #注意：同一个缩进的语句属于同一个代码段 c = 1 while c <= r: print "%s * %s = %s\t"% (r, c, r * c), c += 1 r += 1 print
程序输出结果：
FFFFFFFFFF for循环 FFFFFFFFFF
1 * 1 = 1
2 * 1 = 2 2* 2 = 4
3 * 1 = 3 3* 2 = 6 3 * 3 = 9
4 * 1 = 4 4* 2 = 8 4 * 3 = 12 4 * 4 = 16
5 * 1 = 5 5* 2 = 10 5 * 3 = 15 5 * 4 = 20 5* 5 = 25
6 * 1 = 6 6* 2 = 12 6 * 3 = 18 6 * 4 = 24 6* 5 = 30 6 * 6 = 36
7 * 1 = 7 7* 2 = 14 7 * 3 = 21 7 * 4 = 28 7* 5 = 35 7 * 6 = 42 7 * 7 = 49
8 * 1 = 8 8* 2 = 16 8 * 3 = 24 8 * 4 = 32 8* 5 = 40 8 * 6 = 48 8 * 7 = 56 8* 8 = 64
9 * 1 = 9 9* 2 = 18 9 * 3 = 27 9 * 4 = 36 9* 5 = 45 9 * 6 = 54 9 * 7 = 63 9* 8 = 72 9 * 9 = 81
for循环中的continue和break使用
0 1 2 4 5 6 7
wwwwwwww python中的while循环 wwwwwwwwww
1 * 1 = 1
2 * 1 = 2 2* 2 = 4
3 * 1 = 3 3* 2 = 6 3 * 3 = 9
4 * 1 = 4 4* 2 = 8 4 * 3 = 12 4 * 4 = 16
5 * 1 = 5 5* 2 = 10 5 * 3 = 15 5 * 4 = 20 5* 5 = 25
6 * 1 = 6 6* 2 = 12 6 * 3 = 18 6 * 4 = 24 6* 5 = 30 6 * 6 = 36
7 * 1 = 7 7* 2 = 14 7 * 3 = 21 7 * 4 = 28 7* 5 = 35 7 * 6 = 42 7 * 7 = 49
8 * 1 = 8 8* 2 = 16 8 * 3 = 24 8 * 4 = 32 8* 5 = 40 8 * 6 = 48 8 * 7 = 56 8* 8 = 64
9 * 1 = 9 9* 2 = 18 9 * 3 = 27 9 * 4 = 36 9* 5 = 45 9 * 6 = 54 9 * 7 = 63 9* 8 = 72 9 * 9 = 81
