编译较大程序库的时候会产生大量目标文件，如Qt，有一半的空间被目标文件占据，然而编译完后，这些文件往往就没什么用了。
下面的python程序就是用来批量删除目标文件的，使用的时候将root_path修改为需要处理的路径，另外默认删除.obj，.o，.pch文件。
import os
import shutil
FILE_COUNT = 0
def list_obj_file(f, path):
(name, ext) = os.path.splitext(f)
if ext == ".obj" or ext == ".o" or ext == ".pch":
global FILE_COUNT
FILE_COUNT = FILE_COUNT + 1
full_file_name = os.path.join(path, f)
print("delete: ", full_file_name)
os.remove(full_file_name)
#new_file_name = full_file_name + ".obj"
#shutil.move(full_file_name,new_file_name)
def traverse_dir(dir):
for f in os.listdir(dir):
if os.path.isdir(os.path.join(dir, f)):
print("dir", os.path.join(root_path, f))
traverse_dir(os.path.join(dir, f))
else:
list_obj_file(f, dir)
root_path = "K:/qt-everywhere-opensource-src-4.7.1"
for f in os.listdir(root_path):
if os.path.isdir(os.path.join(root_path, f)):
print("dir:", os.path.join(root_path, f))
traverse_dir(os.path.join(root_path, f))
else:
list_obj_file(f, root_path)
print("DELETE OBJ FILES COUNT: ", FILE_COUNT)
