Permanently adding a file path to sys path in Python

Question

I had a file called example file py  which I wanted to use from various other files  so I decided to add example file py to sys path and import this file in another file to use the file  To do so  I ran the following in IPython   import sys sys path sys path append   path to the example file py   print sys path    I could see the path I had just added  and when I tried to import this file from another directory path like this   import example file   it worked just fine  but once I came out of IPython  entered it again  and checked the sys path  I saw that the path which I had added was not present  so how do I add a path to sys path permanently in Python

User · Accepted Answer

There are a few ways   One of the simplest is to create a my-paths pth file  as described here    This is just a file with the extension  pth that you put into your system site-packages directory   On each line of the file you put one directory name  so you can put a line in there with  path to the  and it will add that directory to the path   You could also use the PYTHONPATH environment variable  which is like the system PATH variable but contains directories that will be added to sys path   See the documentation   Note that no matter what you do  sys path contains directories not files   You can t  add a file to sys path    You always add its directory and then you can import the file

User · Answer

This way worked for me   adding the path that you like   export PYTHONPATH  PYTHONPATH  path you want to add   checking  you can run  export  cmd and check the output or you can check it using this cmd   python -c  import sys  print sys path

[python] Permanently adding a file path to sys.path in Python

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