前段时间买了一个kindle 电子书阅读器、我想用它来读的pdf文档、当然最主要是用来读python标准库&mysql的官方文档。
问题就来了、这两个都是大头书、之前用mac看还好、用kindle就真的不方便了；主要是kindle对pdf的支持不太好、不能
目录导航；于是我就想把大的pdf文件按章节分解成小的pdf文件
一、安装PyPDF2这个python包：
pip3 install PyPDF2
二、从源pdf文件中抽取页面：
#/usr/local/python/bin/python3 from PyPDF2 import PdfFileReader,PdfFileWriter
"""
抽取pdf页面
""" if __name__=="__main__":
reader=PdfFileReader('/Users/jianglexing/Documents/linux/python/python-3.6/library.pdf')
writer=PdfFileWriter()
#开始的页面号
start=108
#结束的页面号
stop=126
with open('/Users/jianglexing/Documents/python-std-re.pdf','wb') as wstream:
for page in range(start,stop):
temp=reader.getPage(page)
writer.addPage(temp)
writer.write(wstream)
print("对抽取完成了")
三、功能我们已经实现了、但是还太友好、下面对代码进行改进：
#/usr/local/python/bin/python3 from PyPDF2 import PdfFileReader,PdfFileWriter
import argparse """
抽取pdf页面
""" if __name__=="__main__":
parser=argparse.ArgumentParser()
parser.add_argument('--source-file',default=r'/Users/jianglexing/Documents/linux/python/python-3.6/library.pdf',help='源文件全路径')
parser.add_argument('--target-file',default=r'/tmp/target.pdf',help='目标路径的全路径')
parser.add_argument('--start-page',default=,type=int,help='开始的页号')
parser.add_argument('--stop-page',default=,type=int,help='结束的页号')
args=parser.parse_args()
reader=PdfFileReader(args.source_file)
writer=PdfFileWriter()
with open(args.target_file,'wb') as wstream:
for page in range(args.start_page,args.stop_page):
temp=reader.getPage(page)
writer.addPage(temp)
writer.write(wstream)
print("对抽取完成了")
四、还有一些没有解决的问题、如果源文件太大的话会报错、由于还没有看PyPDF2的源码、所以目前还不知道怎么解决：
JianglexingdeMacBook-Pro:Desktop jianglexing$ python3 splitpdf.py --source-file='/Users/jianglexing/Desktop/refman-5.7.18-en.a4.pdf' --target-file=/Users/jianglexing/Desktop/temp.pdf --start-page= --stop-page=
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/PyPDF2/generic.py", line , in __new__
return decimal.Decimal.__new__(cls, utils.str_(value), context)
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/PyPDF2/utils.py", line , in str_
if sys.version_info[] < :
RecursionError: maximum recursion depth exceeded in comparison During handling of the above exception, another exception occurred: Traceback (most recent call last):
File "splitpdf.py", line , in <module>
writer.write(wstream)
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/PyPDF2/pdf.py", line , in write
self._sweepIndirectReferences(externalReferenceMap, self._root)
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/PyPDF2/pdf.py", line , in _sweepIndirectReferences
self._sweepIndirectReferences(externMap, realdata)
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/PyPDF2/pdf.py", line , in _sweepIndirectReferences
value = self._sweepIndirectReferences(externMap, value)
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/PyPDF2/pdf.py", line , in _sweepIndirectReferences
self._sweepIndirectReferences(externMap, realdata)
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/PyPDF2/pdf.py", line , in _sweepIndirectReferences
value = self._sweepIndirectReferences(externMap, value)
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/PyPDF2/pdf.py", line , in _sweepIndirectReferences
value = self._sweepIndirectReferences(externMap, data[i])
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/PyPDF2/pdf.py", line , in _sweepIndirectReferences
self._sweepIndirectReferences(externMap, realdata)
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