Question

我正在编写一个需要合并许多单页pdf文件的小脚本。我希望脚本能够与Python3一起运行，并尽可能减少依赖关系。

对于PDF合并部分，我尝试使用PyPdf。但是，Python 3的支持似乎是错误的;它无法处理inkscape生成的PDF文件（我需要）。我安装了当前的Git版本的PyPdf，并且以下测试脚本不起作用：

import PyPDF2

output_pdf = PyPDF2.PdfFileWriter()

with open("testI.pdf", "rb") as input:
    input_pdf = PyPDF2.PdfFileReader(input)
    output_pdf.addPage(input_pdf.getPage(0))

with open("test.pdf", "wb") as output:
    output_pdf.write(output)

它抛出以下堆栈跟踪：

Traceback (most recent call last):
  File "test.py", line 7, in <module>
    output.addPage(input.getPage(0))
  File "/usr/lib/python3.3/site-packages/pyPdf/pdf.py", line 420, in getPage
    self._flatten()
  File "/usr/lib/python3.3/site-packages/pyPdf/pdf.py", line 574, in _flatten
    self._flatten(page.getObject(), inherit)
  File "/usr/lib/python3.3/site-packages/pyPdf/generic.py", line 165, in getObject
    return self.pdf.getObject(self).getObject()
  File "/usr/lib/python3.3/site-packages/pyPdf/pdf.py", line 616, in getObject
    retval = readObject(self.stream, self)
  File "/usr/lib/python3.3/site-packages/pyPdf/generic.py", line 66, in readObject
    return DictionaryObject.readFromStream(stream, pdf)
  File "/usr/lib/python3.3/site-packages/pyPdf/generic.py", line 526, in readFromStream
    value = readObject(stream, pdf)
  File "/usr/lib/python3.3/site-packages/pyPdf/generic.py", line 57, in readObject
    return ArrayObject.readFromStream(stream, pdf)
  File "/usr/lib/python3.3/site-packages/pyPdf/generic.py", line 152, in readFromStream
    obj = readObject(stream, pdf)
  File "/usr/lib/python3.3/site-packages/pyPdf/generic.py", line 86, in readObject
    return NumberObject.readFromStream(stream)
  File "/usr/lib/python3.3/site-packages/pyPdf/generic.py", line 231, in readFromStream
    return FloatObject(name.decode("ascii"))
  File "/usr/lib/python3.3/site-packages/pyPdf/generic.py", line 207, in __new__
    return decimal.Decimal.__new__(cls, str(value), context)
TypeError: optional argument must be a context

然而，相同的脚本与Python 2.7完美配合。

我在这里做错了什么？这是库中的错误吗？我可以在不触及PyPDF库的情况下解决它吗？

Answer 1

所以我找到了答案。 Python3.3中的decimal.Decimal模块显示了一些奇怪的行为。这是相应的StackOverflow问题：Instantiate Decimal class我向PyPDF2库添加了一些解决方法并提交了拉取请求。

Answer 2

只是为了确保您了解已经存在的工具：

PDFtk
PDFjam（我最喜欢的，需要LaTeX）
直接与GhostScript：
gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -sOutputFile=finished.pdf file1.pdf file2.pdf

将PDF文件与Python3合并

2 个答案: