Python 呼呼声无法成功搜索关键字

1.我正在写一个非常简单的嗖嗖项目。首先，我读取一个txt文件，并使用read（）方法获取txt文件中的所有内容。然后为该内容建立索引

2.以下是实施代码：

对于txt文件内容：

#import functions from whoosh
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)
ix = create_in(".", schema)
writer = ix.writer()
i = 0
f = open("read.txt", "r")
print(f.read())
writer.add_document(title=u"document "+str(i), path=u".",content=f.read()) #python iterator i starting from 0
writer.commit(optimize=True)
searcher = ix.searcher()


parser = QueryParser("content", ix.schema)
stringquery = parser.parse("Hello")
results = searcher.search(stringquery)
print ("search 1 result:")
print (results)
for r in results:
    print (r)

Hello this is the test 
I hope you are doing well
I think you can do it without problem 
This is so cool without funciton

对于txt文件内容：

#import functions from whoosh
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)
ix = create_in(".", schema)
writer = ix.writer()
i = 0
f = open("read.txt", "r")
print(f.read())
writer.add_document(title=u"document "+str(i), path=u".",content=f.read()) #python iterator i starting from 0
writer.commit(optimize=True)
searcher = ix.searcher()


parser = QueryParser("content", ix.schema)
stringquery = parser.parse("Hello")
results = searcher.search(stringquery)
print ("search 1 result:")
print (results)
for r in results:
    print (r)

Hello this is the test 
I hope you are doing well
I think you can do it without problem 
This is so cool without funciton

“Hello”假设存储在索引中，但当我尝试搜索Hello时，它不会返回任何内容

search 1 result:
<Top 0 Results for Term('content', 'hello') runtime=7.878600001731684e-05>

搜索1结果：

第一次调用

f.read（）

打印文件中的文本，下一次调用

f.read（）

没有要读取的内容，也没有返回任何内容。存储文本

file_content = f.read()
print(file_content)
writer.add_document(title=u"document "+str(i), path=u".", content=file_content)

进一步证明,

$ cat test.txt
Hello this is the test
I hope you are doing well
I think you can do it without problem
This is so cool without funciton
$ ipython
Python 3.9.0 (default, Dec  2 2020, 10:34:08)
Type 'copyright', 'credits' or 'license' for more information
IPython 7.19.0 -- An enhanced Interactive Python. Type '?' for help.

In [1]: f = open("test.txt", "r")

In [2]: print(f.read())
Hello this is the test
I hope you are doing well
I think you can do it without problem
This is so cool without funciton


In [3]: print(f.read())


In [4]: quit

---

你的意思是f.read（）什么都不读，所以内容也将是空的吗？我是否应该更改您在注释中键入的代码？您当前调用

f.read（）

两次。第一次读取文件内容。第二次什么也不读。