详谈python中冒号与逗号的区别
注意if\while\for等(或函数定义)语句在结尾处包含一个冒号——我们通过它告诉python下面跟着一个语句块。
--------------冒号的用法
if guess == number: print 'Congratulations, you guessed it.' # New block starts here print "(but you do not win any prizes!)" # New block ends here elif guess < color="#ff0000">: print 'No, it is a little higher than that' # Another block # You can do whatever you want in a block ... else: print 'No, it is a little lower than that' -------------- def printMax(x, y): '''输出最大的2个数. 2个数值必需是整数.''' x = int(x) # convert to integers, if possible y = int(y) if x > y: print x, 'is maximum' else: print y, 'is maximum' ========逗号的特殊用途 for item in shoplist: print item,
我们在print语句的结尾使用了一个 逗号 来消除每个print语句自动打印的换行符。这样做有点难看，不过确实简单有效。
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