Here is what I do on my projects in jupyter notebook, import sys sys.path.append(“../”) # go to parent dir from customFunctions import * Then, to affect changes in customFunctions.py, %load_ext autoreload %autoreload 2
http://docs.python.org/3/tutorial/modules.html#the-module-search-path 6.1.2. The Module Search Path When a module named spam is imported, the interpreter first searches for a built-in module with that name. If not found, it then searches for a file named spam.py in a list of directories given by the variable sys.path. sys.path is initialized from these locations: The directory containing the … Read more
You would probably also want this: import sys print(sys.path) Or as a one liner from the terminal: python -c “import sys; print(‘\n’.join(sys.path))” Caveat: If you have multiple versions of Python installed you should use a corresponding command python2 or python3.
If you really need to use sys.path.insert, consider leaving sys.path[0] as it is: sys.path.insert(1, path_to_dev_pyworkbooks) This could be important since 3rd party code may rely on sys.path documentation conformance: As initialized upon program startup, the first item of this list, path[0], is the directory containing the script that was used to invoke the Python interpreter.
For PyCharm 5 (or 2016.1), you can: select Preferences > Project Interpreter to the right of interpreter selector there is a “…” button, click it select “more…” pop up a new “Project Interpreters” window select the rightest button (named “show paths for the selected interpreter”) pop up a “Interpreter Paths” window click the “+” buttom … Read more
1) PYTHONPATH is an environment variable which you can set to add additional directories where python will look for modules and packages. e.g.: # make python look in the foo subdirectory of your home directory for # modules and packages export PYTHONPATH=${PYTHONPATH}:${HOME}/foo Here I use the sh syntax. For other shells (e.g. csh,tcsh), the syntax … Read more
For Mac/Linux; PYTHONPATH=/foo/bar/baz python somescript.py somecommand For Windows, setup a wrapper pythonpath.bat; @ECHO OFF setlocal set PYTHONPATH=%1 python %2 %3 endlocal and call pythonpath.bat script file like; pythonpath.bat /foo/bar/baz somescript.py somecommand
Modifications to sys.path only apply for the life of that Python interpreter. If you want to do it permanently you need to modify the PYTHONPATH environment variable: PYTHONPATH=”/Me/Documents/mydir:$PYTHONPATH” export PYTHONPATH Note that PATH is the system path for executables, which is completely separate. **You can write the above in ~/.bash_profile and the source it using … Read more
If the only reason to modify the path is for developers working from their working tree, then you should use an installation tool to set up your environment for you. virtualenv is very popular, and if you are using setuptools, you can simply run setup.py develop to semi-install the working tree in your current Python … Read more
This is working as documented. Any paths specified in PYTHONPATH are documented as normally coming after the working directory but before the standard interpreter-supplied paths. sys.path.append() appends to the existing path. See here and here. If you want a particular directory to come first, simply insert it at the head of sys.path: import sys sys.path.insert(0,’/path/to/mod_directory’) … Read more