如何解决为什么会出现错误消息异常:此文件已关闭
1.我试图编写一个python代码来获取每个子文件夹中文件的所有内容,并为每个内容(文件内容)创建一个索引。可以成功获取每个文件的所有内容。但是,当我运行代码时,它总是显示错误消息异常:此文件已关闭。
2.这是为每个内容建立索引的代码,有人可以向我解释为什么会发生这种事情吗? 回溯:
python-input-49-38a47b2f8c0c> in <module>
39 print(searcher)
40
---> 41 writers.commit(optimize=True)
42
43 # from whoosh.query import *
~/.local/lib/python3.8/site-packages/whoosh/writing.py in commit(self,mergetype,optimize,merge)
928 else:
929 # Close segment files
--> 930 self._close_segment()
931 # Write TOC
932 self._commit_toc(finalsegments)
~/.local/lib/python3.8/site-packages/whoosh/writing.py in _close_segment(self)
841 def _close_segment(self):
842 if not self.perdocwriter.is_closed:
--> 843 self.perdocwriter.close()
844 if not self.fieldwriter.is_closed:
845 self.fieldwriter.close()
~/.local/lib/python3.8/site-packages/whoosh/codec/whoosh3.py in close(self)
265 for writer in self._colwriters.values():
266 writer.finish(self._doccount)
--> 267 self._cols.save_as_files(self._storage,self._column_filename)
268
269 # If vectors were written,close the vector writers
~/.local/lib/python3.8/site-packages/whoosh/filedb/compound.py in save_as_files(self,storage,name_fn)
295
296 def save_as_files(self,name_fn):
--> 297 for name,blocks in self._readback():
298 f = storage.create_file(name_fn(name))
299 for block in blocks():
~/.local/lib/python3.8/site-packages/whoosh/filedb/compound.py in _readback(self)
276
277 yield (name,gen)
--> 278 temp.close()
279 self._tempstorage.delete_file(self._tempname)
280
~/.local/lib/python3.8/site-packages/whoosh/filedb/structfile.py in close(self)
121
122 if self.is_closed:
--> 123 raise Exception("This file is already closed")
124 if self.onclose:
125 self.onclose(self)
import os
import codecs
import whoosh
from whoosh.index import create_in
from whoosh.fields import *
from whoosh.qparser import QueryParser
schema = Schema(title=TEXT(stored=True),path=ID(stored=True),content=TEXT,textdata=TEXT(stored=True))
ix = create_in("folder",schema)
filelist = []
for root,dirs,files in os.walk("./test_result"):
for file in files:
#append the file name to the list
filelist.append(os.path.join(root,file))
#print all the file names
writer = ix.writer()
i = 0
for name in filelist:
i = i +1
with codecs.open (name,"r",encoding='utf-8',errors='ignore') as myfile:
text=myfile.read()
# print ("adding document "+name)
writer.add_document(title="document "+name,path="folder",content=text,textdata=text)
myfile.close()
print(text)
searcher = ix.searcher()
print(searcher)
writers.commit(optimize=True)
解决方法
with
语句处理资源管理,包括文件关闭。您可以阅读更多相关信息here。
此代码:
f = open(file)
f.write("blablabla")
f.close
相当于:
with open(file) as f
f.write("blablabla")
此异常是由于您尝试关闭已被 with
语句隐式关闭的文件所致。
你只需要删除这一行:
myfile.close()
编辑:
我只是解释了代码中的错误,但没有注意到注释中的更新。请更新问题本身,删除提到的行。
顺便说一句,我看到您使用了 writers.commit(
) 而不是 writer.commit()
,请确保这不是一个错字,如果您的代码仍然无法正常工作,请更新您的问题。
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