Question

我正在尝试运行以下代码。但是我没有得到我对term_double_score（）函数调用的输出。我真的很感激为什么会发生这种情况以及如何查看函数调用的输出？

  def term_double_score(sent_file):
    scores_double = {} # initialize an empty dictionary with double phrases
    for line in sent_file:
        term, score  = line.split("\t")  # The file is tab-delimited. 
        if " " in term: 
            scores_double[term] = int(score)
    print "Len_double:",len(scores_double.items())



def term_single_score(sent_file):
    scores_single = {} # initialize an empty dictionary with single phrases
    for line in sent_file:
        term, score  = line.split("\t")  # The file is tab-delimited. 
        scores_single[term] = int(score) 
    print "Len_single:",len(scores_single.items()) 


sent_file = open("some.txt")


term_single_score(sent_file)
term_double_score(sent_file)

Answer 1

在@ jonrsharpe的解决方案中，代码为single_score读取并处理文件一次。在使用double_score进行第二次处理之前，请使用sent_file.seek(0)重置文件指针，以便代码可以重新读取该文件。
以下解决方案读取整个文件并对其进行缓冲。 Single_score基于文件数据的副本运行。然后再次在副本上运行double_score。

如果文件很小，后一种解决方案是好的;系统有足够的内存将其保存在内存中。对于巨大的文件，解决方案＃1是优越的。

源

def term_double_score(sent_file):
    scores_double = {} # initialize an empty dictionary with double phrases
    for line in sent_file:
        term, score  = line.split("\t")  # The file is tab-delimited. 
        if " " in term: 
            scores_double[term] = int(score)
    print "Len_double:",len(scores_double.items())



def term_single_score(sent_file):
    scores_single = {} # initialize an empty dictionary with single phrases
    for line in sent_file:
        term, score  = line.split("\t")  # The file is tab-delimited. 
        scores_single[term] = int(score) 
    print "Len_single:",len(scores_single.items()) 


# read file and buffer it
sent_file = list( open('zoot.dat') )

term_single_score(sent_file)
term_double_score(sent_file)

试图在两个函数中使用相同的文件，但无法看到两个函数的输出？

1 个答案:

源