Question

我试图获取一个包含10个句子（所有单词）的txt文件，并将其作为命令行参数传递给python脚本。我想打印包含dic中列出的单词的句子。下面的脚本找到匹配的句子，但它会在找到匹配的单词时多次打印句子。

我可以使用另一种方法来执行此操作吗？另外，我不希望输出由一行（\ n）

分隔

import sys

dic=["april","aprils","ask","aug","augee","august","bid","bonds","brent","buy","call","callroll","calls","chance","checking","close","collar","condor","cover"]

f=open(sys.argv[1])

for i in range(0,10):
line=f.readline()    
words=line.split()
if len(words) > 3:
    for j in words:
        if j in dic:
            print(line)

输出：

eighty two is what i am bidding on the brent

eighty two is what i am bidding on the brent

eighty two is what i am bidding on the brent

call on sixty five to sixty seventy

call on sixty five to sixty seventy

call on sixty five to sixty seventy

call on sixty five to sixty seventy

call on sixty five to sixty seventy

no nothing is going on double

i am bidding on the option for eighty five

i am bidding on the option for eighty five

recross sell seller selling sept

recross sell seller selling sept

recross sell seller selling sept

recross sell seller selling sept

recross sell seller selling sept

blah blah blah blah close

必需输出：

eighty two is what i am bidding on the brent
call on sixty five to sixty seventy
no nothing is going on double
i am bidding on the option for eighty five
recross sell seller selling sept
blah blah blah blah close

Answer 1

抑制输出中的重复行

在break语句后添加print(line)，以便字典字词上的for循环中断
抑制换行符

额外的换行符由f.readline()引起，因为它会在返回的字符串末尾包含\n。您可以使用line.strip()删除此内容，但最好使用for line in f语法。

以下是代码：

for line in f:    
    words=line.split()
    if len(words) > 3:
        for j in words:
            if j in dic:
                print(line)
                break

Answer 2

我建议为您的单词词典创建一个set，并为包含文件每行的单词set创建一个&。然后，您可以使用import sys dic=set(["april","aprils","ask","aug","augee","august","bid","bonds","brent","buy","call","callroll","calls","chance","checking","close","collar","condor","cover"]) filename = sys.argv[1] with open(filename) as f: for line in f: s = set(line.split()) if s & dic: print(line.strip())比较集合以获取它们的交集，或两者共有的单词。这比循环遍历列表找到类似的单词更有效。

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Python：我需要print才能返回唯一的句子

2 个答案: