Module is a code segment available packaged, Py suffix, can be introduced into another program # use import
OS module: operting system OS #import os
| os.chdir(path) | Change the current working directory |
| os.getcwd() | Returns the current working directory |
| os.listdir(path) |
List the name of the file or return path designated folder containing the folder. |
| os.mkdir(path[, mode]) | Digital mode to mode to create a file called path of the folder. The default mode is 0777 (octal) |
| os.makedirs(path[, mode]) | Recursive folder creation function. Like mkdir (), but all intermediate-level folders that you create needs to include subfolders. |
| os.open(file, flags[, mode]) | Open a file, and set the desired options open, mode parameter is optional |
| os.remove(path) | Delete the path for the path of the file. If the path is a folder, will throw OSError; see below rmdir () deletes a directory. |
| os.removedirs(path) | Recursively delete the directory in which the directory is empty, can not contain files |
| os.rename(src, dst) | Rename the file or directory from src to dst |
| os.renames(old, new) |
Recursively renaming directories, files can be renamed. |
| os.rmdir(path) | Delete empty directory path specified, if the directory is not empty, an exception is thrown a OSError |
| os.utime(path, times) | Return to access and modify the file path specified time. |
os.path modules:
| os.path.abspath(path) | Returns the absolute path |
| os.path.basename(path) | Returns the file name |
| os.path.dirname(path) | Returns the file path |
| os.path.exists(path) | If the path path exists, returns True; path if the path does not exist, returns False |
| os.path.getatime(path) | Returns the last access time (floating-point number of seconds), you can instead use local time localtime time module () |
| os.path.getmtime(path) | Returns last file modification time |
| os.path.getctime(path) | Returns the file path creation time |
| os.path.getsize(path) | Returns the file size, file does not exist if it returns an error |
| os.path.isabs(path) | Determine whether the absolute path |
| os.path.isfile(path) | Determine whether the file path |
| os.path.isdir(path) | Determine whether the directory path |
| os.path.islink(path) | Determine whether the link path |
| os.path.ismount(path) | Determine whether the path to the mount point # mount point directory entry is actually a disk file system in linux, similar to windows in C used to access different partitions:, D:, E: and so on letter |
| os.path.join(path1[, path2[, ...]]) | The synthesis of a directory and file name path |
| Oskpthksmefaile (Pthl, Pth2) | Determine whether the same file or directory |
| os.path.sameopenfile(fp1, fp2) | Fp1 and fp2 point to determine whether the same file |
| os.path.samestat (stat1, stat2) | Judgment stat tuple stat1 and stat2 point to the same file |
| os.path.split(path) | The path is divided into dirname and basename, returns a tuple |
| os.path.splitdrive(path) | Generally used in the windows, the drive and path returns a tuple |
| os.path.splitext(path) | Split path, return path and file name extensions tuple |
| os.path.splitunc(path) | The route into a mount point and file |
pickle模块：将内容====>二进制====>保存（文件格式没有定性要求，一般为pkl)用来永久储存
存放：pickling
读取：unpickling
写入：pickle.dump(内容，文件(目的地))#打开文件，wb
读取：pickle.load(文件)#打开文件，rb
#字典操作分离，将字典存在硬盘上，而不是源码中