python 实验技巧：自动保存每次修改的文件

python 实验技巧：自动保存每次修改的文件

在调试代码的时候，我们很多时候都忘记我们上次做了哪些改进，这样在做ablation实验的时候很乱，没有条理。这里借鉴python中的report包（可能python3.x以后就没法用了）来自动将每次实验的代码保存下来方便比较。

我们这里使用的是port_sources函数：

#  Copyright (c) 2016, NVIDIA Corporation
#  All rights reserved.
#
#  Redistribution and use in source and binary forms, with or without
#  modification, are permitted provided that the following conditions are met:
#      * Redistributions of source code must retain the above copyright
#        notice, this list of conditions and the following disclaimer.
#      * Redistributions in binary form must reproduce the above copyright
#        notice, this list of conditions and the following disclaimer in the
#        documentation and/or other materials provided with the distribution.
#      * Neither the name of NVIDIA Corporation nor the
#        names of its contributors may be used to endorse or promote products
#        derived from this software without specific prior written permission.
#
#  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
#  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
#  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
#  DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
#  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
#  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
#  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
#  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
#  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
#  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.def export_sources(target_dir):os.makedirs(target_dir)for ext in ('py', 'pyproj', 'sln'):for fn in glob.glob('*.' + ext):py2(fn, target_dir)if os.path.isdir('src'):for fn in glob.glob(os.path.join('src', '*.' + ext)):py2(fn, target_dir)

注意，在使用这个函数的时候需要引用几个包：

import glob
import shutil
import os

比如我们可以这样用：

export_sources(os.path.join(log_dir, 'src'))

这样就可以在你指定的文件夹下面看到你之前做了修改的文件。以后可以放心的改代码，每次跑的时候都会保存下来你改过的文件。

声明

本代码段copy自python官方的report包。代码段最开始的注释为了声明NVIDIA的版权。