python文件操作

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1、文件遍历、查找，移动
2、删除指定后缀文件
3、判断文件是否存在
4、文件夹创建

def produce_time_desc():

#取到当前时间localtime = time.localtime(time.time())str_time = time.strftime('-%Y%m%d-%H%M%S',localtime)return str_time

遍历某文件夹，获取全部文件名，形成数组。文件夹滤掉。

def find_file_ori_imei():
print ‘start to find file from ori dir’
file_array = os.listdir(ori_imei_dir)
imei_ary = []
for file_name in file_array:

    if not os.path.isdir(ori_imei_dir+'/'+file_name):        if len(file_name) > 10:            imei_ary.append(file_name)            pass        passreturn imei_ary

查找指定后缀的文件名.x

def delete_file_in_license_dir_with_x(name):

file_will_delete_dir=license_imei_dir+'/'+namefor root, dirs, files in os.walk(file_will_delete_dir, True):    for name in files:        print name        pathname = os.path.splitext(os.path.join(root, name))        print pathname[1]        if (not ".xxx" != pathname[1]):            os.remove(os.path.join(root, name))            print 'license active file has deleted:'+os.path.join(root,name)pass

def delete_active_file():
print ‘begin to dele_active_file’

imei_ary = find_file_ori_imei()for name in imei_ary:    print('will deal with file :'+name)    delete_file_in_license_dir_with_x(name)    shutil.move(ori_imei_dir+'/'+name, ori_imei_dir+'/'+'backup/'+name+produce_time_desc())    print ('move finish:'+name)pass

主函数

if name==’main‘:

backup_dir=ori_imei_dir+'/backup'if not os.path.exists(backup_dir):    os.mkdir(backup_dir)    print 'create backup dir'delete_active_file()print 'main function finish'# time.sleep(10)pass

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