在 python 中使用管道

发布于 2024-11-16 01:40:22 字数 751 浏览 5 评论 0原文

import re
import subprocess

sub = subprocess.Popen(['/home/karthik/Downloads/stanford-parser-2011-06-   08/lexparser.csh'], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr = subprocess.PIPE)

sub.stdin.write("i am a fan of ac milan which is the best club in the world")

relns = []

while(True):
    rel = sub.stdout.readline()
        m = re.search("Sentence skipped", rel)

    if m != None:
            print 'stop'
            sys.exit(0)

        if rel == '\n':
                break
        relns.append(rel) 

print relns

sub.terminate()

所以我想要斯坦福解析器并使用 lexparser.csh 来解析这行文本。但是当我运行这段代码时，我得到了默认文本的输出。给出的实际文本没有被解析。那么我是否以正确的方式使用管道？我在很多例子中看到过 - '-' 与命令一起使用。为什么要使用它？因为当我使用该脚本时，脚本只是停在 sub.stdout.readline() 处

原文

import re
import subprocess

sub = subprocess.Popen(['/home/karthik/Downloads/stanford-parser-2011-06-   08/lexparser.csh'], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr = subprocess.PIPE)

sub.stdin.write("i am a fan of ac milan which is the best club in the world")

relns = []

while(True):
    rel = sub.stdout.readline()
        m = re.search("Sentence skipped", rel)

    if m != None:
            print 'stop'
            sys.exit(0)

        if rel == '\n':
                break
        relns.append(rel) 

print relns

sub.terminate()

So i want to the stanford parser and using the lexparser.csh to parse this line of text . But when i run this piece of code i am a getting the output of the default of text. The actual text given in is not being parsed. So am i using pipes the right way ?And i've seen in a lot of examples - a '-' is used along with the command . Why is that being used ? Cos when i use that the script just stalls at sub.stdout.readline()

分享到QQ

分享到微博