Using Python s os path how do I go up one directory

Question

I recently upgrade Django from v1 3 1 to v1 4   In my old settings py I have   TEMPLATE DIRS         os path join os path dirname    file       templates   replace                   Put strings here  like   home html django templates  or  C  www django templates         Always use forward slashes  even on Windows        Don t forget to use absolute paths  not relative paths      This will point to  Users hobbes3 Sites mysite templates  but because Django v1 4 moved the project folder to the same level as the app folders  my settings py file is now in  Users hobbes3 Sites mysite mysite  instead of  Users hobbes3 Sites mysite    So actually my question is now twofold    How do I use os path to look at a directory one level above from   file    In other words  I want  Users hobbes3 Sites mysite mysite settings py to find  Users hobbes3 Sites mysite templates using relative paths  Should I be keeping the template folder  which has cross-app templates  like admin  registration  etc   at the project  User hobbes3 Sites mysite level or at  User hobbes3 Sites mysite mysite

User · Answer

You want exactly this   BASE DIR   os path join  os path dirname    file

User · Answer

From the current file path you could use  os path join os path dirname   file          img   banner png

User · Answer

I think the easiest thing to do is just to reuse dirname   So you can call   os path dirname os path dirname    file        if you file is at  Users hobbes3 Sites mysite templates method py   This will return   Users hobbes3 Sites mysite

User · Answer

Go up a level from the work directory import os os path dirname os getcwd     or from the current directory import os os path dirname  current path

User · Answer

If you are using Python 3 4 or newer  a convenient way to move up multiple directories is pathlib   from pathlib import Path  full path    path to directory  str Path full path  parents 0       path to  str Path full path  parents 1       path  str Path full path  parents 2

User · Answer

from os path import dirname  realpath  join join dirname realpath dirname   file        templates     Update   If you happen to  copy  settings py through symlinking   forivall s answer is better    user      project1            mysite              settings py         templates              wrong html      project2          mysite              settings py - gt   user project1 settings py         templates              right html   The method above will  see  wrong html while  forivall s method will see right html  In the absense of symlinks the two answers are identical

User · Answer

Of course  simply use os chdir

User · Answer

To get the folder of a file just use   os path dirname path     To get a folder up just use os path dirname again  os path dirname os path dirname path     You might want to check if   file   is a symlink    if os path islink   file     path   os readlink    file

User · Answer

Personally  I d go for the function approach  def get parent dir directory       import os     return os path dirname directory   current dirs parent   get parent dir os getcwd

User · Answer

This might be useful for other cases where you want to go x folders up  Just run walk up folder path  6  to go up 6 folders    def walk up folder path  depth 1        cur depth   1             while  cur depth  lt  depth          path   os path dirname path           cur depth    1     return path

User · Answer

For a paranoid like me  I d prefer this one  TEMPLATE DIRS           file   rsplit      2  0      templates

User · Answer

To go n folders up    run up n   import os  def up n  nth dir os getcwd         while n    0          nth dir   os path dirname nth dir          n -  1     return nth dir

User · Answer

With using os path we can go one directory up like that  one directory up path   os path dirname        also after finding the directory you want you can join with other file directory path  other image path   os path join one directory up path   other jpg

User · Answer

os path abspath os path join os path dirname    file             templates      As far as where the templates folder should go  I don t know since Django 1 4 just came out and I haven t looked at it yet  You should probably ask another question on SE to solve that issue   You can also use normpath to clean up the path  rather than abspath  However  in this situation  Django expects an absolute path rather than a relative path   For cross platform compatability  use os pardir instead of

[python] Using Python's os.path, how do I go up one directory?

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