Question

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：

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

我在互联网上搜索后发现此Troubleshooting "TypeError: ord() expected string of length 1, but int found" 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？

试图更改pdf文件，但效果很好。那是怎么回事：pdf文件或PyPDF2无法处理？我知道根据文档这种方法不太可靠：

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

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

Answer 1

我知道了。这只是PyPDF2的局限性。我使用tika和BeautifulSoup解析并提取了文本，效果很好。尽管只需要做更多的工作。

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)

获取TypeError：ord（）期望的字符串长度为1，但int发现错误

1 个答案: