如何关闭pyPDF"PdfFileReader"类文件句柄 [英] How to close pyPDF "PdfFileReader" Class file handle

问题描述

这应该是一个非常简单的问题，我无法通过Google搜索找到答案:如何关闭由pyPDF"PdfFileReader"类打开的文件句柄

this should be very simple question, for which I couldn't find answer by Google search: How to close file handle opened by pyPDF "PdfFileReader" Class

以下是代码段:

import os.path
from pyPdf import PdfFileReader

fname = 'my.pdf'
input = PdfFileReader(file(fname, "rb"))

os.rename(fname, 'my_renamed.pdf')

这会引发错误[32]

which raises error [32]

谢谢

推荐答案

在其他文件打开的情况下，操作系统阻止文件重命名.这是一件好事(tm).

The operating system is preventing a file from being re-named while something else has it open. This is a Good Thing (tm).

Python的 with 语句将在您关闭后自动关闭文件阅读/操作完毕.

Python's with statement will automatically close the file after you're done reading/manipulating it.

with open(fname, "rb") as f:
  input = PdfFileReader(f, "rb"))

os.rename(fname, 'my_renamed.pdf')

如果您仍在使用Python 2.5，则必须进行特殊导入:

If you're still on Python 2.5, you'll have to do a special import:

from __future__ import with_statement

Python 2.6及更高版本已默认启用.

Python 2.6 and above have with enabled by default.

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