How to get the PYTHONPATH in shell?
PythonLinuxPythonpathPython Problem Overview
debian@debian:~$ echo $PYTHONPATH
/home/qiime/lib/:
debian@debian:~$ python
Python 2.7.3 (default, Jan 2 2013, 16:53:07)
[GCC 4.7.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> sys.path
['', '/usr/local/lib/python2.7/dist-packages/feedparser-5.1.3-py2.7.egg',
'/usr/local/lib/python2.7/dist-packages/stripogram-1.5-py2.7.egg', '/home/qiime/lib',
'/home/debian', '/usr/lib/python2.7', '/usr/lib/python2.7/plat-linux2',
'/usr/lib/python2.7/lib-tk', '/usr/lib/python2.7/lib-old', '/usr/lib/python2.7/lib-
dynload', '/usr/local/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages',
'/usr/lib/python2.7/dist-packages/PIL', '/usr/lib/python2.7/dist-packages/gst-0.10',
'/usr/lib/python2.7/dist-packages/gtk-2.0', '/usr/lib/pymodules/python2.7']
How can I get all of PYTHONPATH
output in bash?
Why echo $PYTHONPATH
can not get all of them?
Python Solutions
Solution 1 - Python
The environment variable PYTHONPATH
is actually only added to the list of locations Python searches for modules. You can print out the full list in the terminal like this:
python -c "import sys; print(sys.path)"
Or if want the output in the UNIX directory list style (separated by :
) you can do this:
python -c "import sys; print(':'.join(x for x in sys.path if x))"
Which will output something like this:
/usr/local/lib/python2.7/dist-packages/feedparser-5.1.3-py2.7.egg:/usr/local/lib/ python2.7/dist-packages/stripogram-1.5-py2.7.egg:/home/qiime/lib:/home/debian:/us r/lib/python2.7:/usr/lib/python2.7/plat-linux2:/usr/lib/python2.7/lib-tk:/usr/lib /python2.7/lib-old:/usr/lib/python2.7/lib- dynload:/usr/local/lib/python2.7/dist- packages:/usr/lib/python2.7/dist-packages:/usr/lib/python2.7/dist-packages/PIL:/u sr/lib/python2.7/dist-packages/gst-0.10:/usr/lib/python2.7/dist-packages/gtk-2.0: /usr/lib/pymodules/python2.7
Solution 2 - Python
Just write:
just write which python
in your terminal and you will see the python path you are using.
Solution 3 - Python
Those of us using Python 3.x should do this:
python -c "import sys; print(sys.path)"
Solution 4 - Python
Python, at startup, loads a bunch of values into sys.path
(which is "implemented" via a list of strings), including:
- various hardcoded places
- the value of
$PYTHONPATH
- probably some stuff from startup files (I'm not sure if Python has
rcfiles
)
$PYTHONPATH
is only one part of the eventual value of sys.path
.
If you're after the value of sys.path
, the best way would be to ask Python (thanks @Codemonkey):
python -c "import sys; print sys.path"
Solution 5 - Python
You can also try this:
Python 2.x:
python -c "import sys; print '\n'.join(sys.path)"
Python 3.x:
python3 -c "import sys; print('\n'.join(sys.path))"
The output will be more readable and clean, like so:
> /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python27.zip /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7 /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload /Library/Python/2.7/site-packages /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/PyObjC
Solution 6 - Python
Adding to @zzzzzzz answer, I ran the command:python3 -c "import sys; print(sys.path)"
and it provided me with different paths comparing to the same command with python
. The paths that were displayed with python3
were "python3 oriented".
See the output of the two different commands:
python -c "import sys; print(sys.path)"
> ['', '/usr/lib/python2.7', '/usr/lib/python2.7/plat-x86_64-linux-gnu', '/usr/lib/python2.7/lib-tk', '/usr/lib/python2.7/lib-old', '/usr/lib/python2.7/lib-dynload', '/usr/local/lib/python2.7/dist-packages', '/usr/local/lib/python2.7/dist-packages/setuptools-39.1.0-py2.7.egg', '/usr/lib/python2.7/dist-packages']
python3 -c "import sys; print(sys.path)"
> ['', '/usr/lib/python36.zip', '/usr/lib/python3.6', '/usr/lib/python3.6/lib-dynload', '/usr/local/lib/python3.6/dist-packages', '/usr/lib/python3/dist-packages']
Both commands were executed on my Ubuntu 18.04 machine.