Python2.7中的for迴圈、while迴圈示例
print "\nFFFFFFFFFFfor迴圈 FFFFFFFFFF"
# for-loop列印九九乘法表,金字塔形狀rows = range(1,10)
cols = range(1,10)
row, col = 1,1
for row in rows:
for col in cols:
if col <= row:
print "%s * %s = %s\t"% (row, col, row * col),
print #列印一個空行
# ----------------------
print "\nfor迴圈中的continue
i = 3
for x in range(10):
if x == i:
continue #不執行當次,直接執行下一次elif x ==
8:
break #退出整個for迴圈else:
print x, #加個逗號，列印時不換行
print "\n\nwwwwwwww python中的while迴圈 wwwwwwwwww"
# while-loop列印九九乘法表,金字塔形狀r = 1
while r <=
len(rows): #注意：同一個縮排的語句屬於同一個程式碼段
c = 1
print "%s * %s = %s\t"% (r, c, r * c),
c += 1
r += 1
print
程式輸出結果：
FFFFFFFFFF for迴圈 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迴圈中的continue和break使用
0 1 2 4 5 6 7
wwwwwwww python中的while迴圈 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