企业官网建设流程全解析

每次写代码，LZ感觉还是得自己手敲一遍。。。一遍？一遍哪够？看着别人现成的代码觉得自己都能看的懂，等到自己上手解决自己任务的时候，才发现根本不是这么一回事。看了很多大神的博客，基本上都有一颗强大的内心，为啥？码了那么久的代码，结果一个bug就可能前功尽弃，从头再来，也是只能默默鼓励下自己：每天进步一点点！

"""Count words."""defcount_words(s,n):"""Return the n most frequently occuring words in s."""# TODO: Count the number of occurences of each word in simportre listOfTokens=re.split(r'\W*',s)# print (listOfTokens)ss=set(listOfTokens)# print (ss)bow=[0]*len(ss)ll=list(ss)forwordinlistOfTokens:ifwordinss:bow[ll.index(word)]+=1dd={}foriinrange(len(ss)):dd[ll[i]]=bow[i]# sort_dd = sorted(dd.items(), key = lambda asd:asd[1], reverse = True)sort_dd=sorted(dd.items(),key=lambdaasd:(-asd[1],asd[0]))top_ll=dict(sort_dd[0:n])top_n=top_ll.keys()# TODO: Return the top n most frequent words.returntop_ndeftest_run():"""Test count_words() with some inputs."""print(count_words("cat bat mat cat bat cat",3))print(count_words("betty bought a bit of butter but the butter was bitter",3))if__name__=='__main__':test_run()test_run()

代码量不大，但是对于python入门的新手任务来说还是有挑战的O(∩_∩)O