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Python字符遍历的艺术

WBOY
WBOYOriginal
2016-06-06 11:26:331180browse

比如,将一个字符串转换为一个字符数组:

theList = list(theString)
同时,我们可以方便的通过for语句进行遍历:

for c in theString:
do_something_with(c)

甚者,使用这样的语句:

result = [do_something_with(c) for c in theString if c == 'x']

同时,还可以使用map语句,下面,我们开始上菜吧!传说中有一个神奇的字符串,被病毒感染了,被病毒附上了许多x字符,你将设计一个引擎,把病毒x出去,把我们神奇的字符串输出来。程序如下:

theString = 'Ix lixkxex xpxytxhxonx !'
def PrintEngine(c):
if c != 'x':
print c,
map(PrintEngine, theString)
输出结果:
I like python !

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