python一些常用的函数

python 复制文件：

import os
import shutil

srcFile = os.path.join(workdir, file)
if not os.path.exists(targetdir):
    os.makedirs(targetdir)

targetFile = os.path.join(targetdir, img_name)
# print('targetFile:%s' % targetFile)

shutil.copyfile(srcFile, targetFile)

 遍历文件夹下所有文件：

'''
遍历文件夹，读取文件，并把文件路径写入txt
'''
import os
def static_dir(dir):
    fl=open('./copy_list.txt','w')
    count=0
    for paths,sub_dirs,filenames in os.walk(dir):
        sorted(filenames)
        for file in filenames:
            # print(path)
            print(os.path.join(paths,file))
            fl.write(os.path.join(paths,file)+'\n')
            count+=1
            print(count)

    # files=os.listdir(dir)
    # for file in files:
    #     print(file)