python2中的子進程返回錯誤

Question

我試圖在Ubuntu上輸入文本到ots summerizer。我正在使用python2 subprocess庫。但一直得到以下錯誤：

text = "the shards that cut me the deepest were the ones that intended to cut , obama to melania trump as first lady 's largest public appearance since the 2016 election - speaking in front of more than 8,000 people at the women 's foundation of colorado 's 30th anniversary celebration - and she touched on personal attacks that she faced again and again" 
>>> sum = subprocess.check_output('ots --ratio=30 <' + text) 
Traceback (most recent call last): 
    File "<stdin>", line 1, in <module> 
    File "/usr/lib/python2.7/subprocess.py", line 567, in check_output 
    process = Popen(stdout=PIPE, *popenargs, **kwargs) 
    File "/usr/lib/python2.7/subprocess.py", line 711, in __init__ 
    errread, errwrite) 
    File "/usr/lib/python2.7/subprocess.py", line 1343, in _execute_child 
    raise child_exception 
OSError: [Errno 36] File name too long 

即使我已經閱讀了ots需要從文件或stdin輸入。因此，我試圖把輸入爲：

sum = subprocess.check_output(['echo',text,'> stdin']) 

但得到以下的輸出：

"the shards that cut me the deepest were the ones that intended to cut , obama to melania trump as first lady 's largest public appearance since the 2016 election - speaking in front of more than 8,000 people at the women 's foundation of colorado 's 30th anniversary celebration - and she touched on personal attacks that she faced again and again > stdin\n" 

但它不是我想要的目的。我只是想使用python的subprocess將文本輸入到ots庫。這是否是一種方法，並從ots快速獲得摘要？請幫助我。

Answer 1

我相信你需要|管道運營商。

sum = subprocess.check_output('echo {} | ots --ratio=30'.format(text), shell=True) 

bash中的<符號用於從另一個流中獲取輸入。