获取TypeError:ord()预期的字符串长度为1，但int发现错误 [英] Getting TypeError: ord() expected string of length 1, but int found error

问题描述

代码为

from PyPDF2 import PdfFileReader
with open('HTTP_Book.pdf','rb') as file:
    pdf=PdfFileReader(file)
    pagedd=pdf.getPage(0)
    print(pagedd.extractText())

此代码引发如下所示的错误:

This code raises the error shown below:

TypeError: ord() expected string of length 1, but int found

我在互联网上搜索后发现此故障排除"TypeError:ord()预期的长度为1的字符串，但找到整数" 但这并没有太大帮助.我知道此错误的背景是什么，但不确定在这里与它有什么关系?

I searched on internet and found this Troubleshooting "TypeError: ord() expected string of length 1, but int found" but it doesn't help much. I am aware of what is the background of this error but not sure how is it related here?

试图更改pdf文件，但效果很好.那是什么问题:pdf文件或PyPDF2无法处理?我知道根据文档这种方法不太可靠:

Tried changing the pdf file and it works fine. Then what is wrong: pdf file or PyPDF2 is not able to handle it? I know this method is not much reliable as per documentation:

这对于某些PDF文件效果很好，但对于其他PDF文件效果不佳，具体取决于所使用的生成器

This works well for some PDF files, but poorly for others, depending on the generator used

应如何处理?

跟踪:

Traceback (most recent call last):
  File "pdf_reader.py", line 71, in <module>
    print(pagedd.extractText())
  File "C:\Users\Jeet\AppData\Local\Programs\Python\Python37\lib\site-packages\PyPDF2\pdf.py", line 2595, in ex
tractText
    content = ContentStream(content, self.pdf)
  File "C:\Users\Jeet\AppData\Local\Programs\Python\Python37\lib\site-packages\PyPDF2\pdf.py", line 2673, in __
init__
    stream = BytesIO(b_(stream.getData()))
  File "C:\Users\Jeet\AppData\Local\Programs\Python\Python37\lib\site-packages\PyPDF2\generic.py", line 841, in
 getData
    decoded._data = filters.decodeStreamData(self)
  File "C:\Users\Jeet\AppData\Local\Programs\Python\Python37\lib\site-packages\PyPDF2\filters.py", line 350, in
 decodeStreamData
    data = LZWDecode.decode(data, stream.get("/DecodeParms"))
  File "C:\Users\Jeet\AppData\Local\Programs\Python\Python37\lib\site-packages\PyPDF2\filters.py", line 255, in
 decode
    return LZWDecode.decoder(data).decode()
  File "C:\Users\Jeet\AppData\Local\Programs\Python\Python37\lib\site-packages\PyPDF2\filters.py", line 228, in
 decode
    cW = self.nextCode();
  File "C:\Users\Jeet\AppData\Local\Programs\Python\Python37\lib\site-packages\PyPDF2\filters.py", line 205, in
 nextCode
    nextbits=ord(self.data[self.bytepos])
TypeError: ord() expected string of length 1, but int found

推荐答案

我遇到了问题.这只是PyPDF2的局限性.我使用了tika和BeautifulSoup来解析和提取文本，效果很好.尽管它只需要做更多的工作.

I got the issue. This is just a limitation of PyPDF2. I used tika and BeautifulSoup to parse and extract the text, it worked fine. Although it needs little more work.

from tika import parser 
from bs4 import BeautifulSoup
raw=parser.from_file('HTTP_Book.pdf',xmlContent=True)['content']
data=BeautifulSoup(raw,'lxml')
message=data.find(class_='page') # for first page
print(message.text)

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