标签：logs int input 换行 pre ack test style row
1. 获得输入内容 input
>>> age = input(‘how old are you?‘) how old are you?10 >>> age ‘10‘
2. print方法的使用，增加间隔，使用sep，换行方式为end
>>> print(‘jack‘,‘ate‘,‘no‘,‘fat‘,sep=‘.‘,end=‘‘) jack.ate.no.fat # test_print.py print(‘jack ate‘, end = ‘‘) print(‘no fat‘) result: jack ateno fat
3. 对结果求值 eval
>>> eval(input(‘? ‘)) ? 3 + 4 * 5 23
4. break 和 countinue的使用
break： 结束循环
i = 0 while i < 5: i=i+1 if i == 3: break print(i, end= ‘ ‘) resut：1 2
continue：跳过当前循环进入下一次迭代
i = 0 while i < 5: i=i+1 if i == 3: continue print(i, end= ‘ ‘) result： 1 2 4 5
如果是嵌套循环，则break和continue分别只针对当前循环内容
for row in range(1, 10): for col in range(1, 10): prod = row * col if prod < 10: print(‘ ‘, end = ‘‘) print(row * col, ‘ ‘, end= ‘‘) print() result： 1 2 3 4 5 6 7 8 9 2 4 6 8 10 12 14 16 18 3 6 9 12 15 18 21 24 27 4 8 12 16 20 24 28 32 36 5 10 15 20 25 30 35 40 45 6 12 18 24 30 36 42 48 54 7 14 21 28 35 42 49 56 63 8 16 24 32 40 48 56 64 72 9 18 27 36 45 54 63 72 81
break：
for row in range(1, 10): for col in range(1, 10): prod = row * col if col == 5: break if prod < 10: print(‘ ‘, end = ‘‘) print(row * col, ‘ ‘, end= ‘‘) print() result： 1 2 3 4 2 4 6 8 3 6 9 12 4 8 12 16 5 10 15 20 6 12 18 24 7 14 21 28 8 16 24 32 9 18 27 36
contiune
for row in range(1, 10): for col in range(1, 10): prod = row * col if col == 5: continue if prod < 10: print(‘ ‘, end = ‘‘) print(row * col, ‘ ‘, end= ‘‘) print() result： 1 2 3 4 6 7 8 9 2 4 6 8 12 14 16 18 3 6 9 12 18 21 24 27 4 8 12 16 24 28 32 36 5 10 15 20 30 35 40 45 6 12 18 24 36 42 48 54 7 14 21 28 42 49 56 63 8 16 24 32 48 56 64 72 9 18 27 36 54 63 72 81
标签：logs int input 换行 pre ack test style row
原文地址：http://www.cnblogs.com/yunmenzhe/p/7506279.html
