I'm new to using python modules.
I'm currently working on a python 2.7 script that will be deployed to many remote computers (which have python 2.7 on them). The problem is that the script needs to use a module, which I am not allowed to install on those computers.
I'm wondering if it is possible to include the module files in the same package as my script (possibly have them compiled first), and then have the script import the library from that local folder, thus achieving a "portable" script.
If that is possible, how would I go about doing that?
Specifics: I'm running 2.7.11 on Windows needing to use Paramiko.
I'm asking this question because the similar questions that I can find either do not answer mine, or expect me to be familiar with core python structures with which I am not. I also DON'T want to include the entirety of python and then install the module onto that, something I see is often called Portable Python. I just want to send my script and the module and nothing more.
Many thanks!
To install modules in a specific directory, you can try pip install module --target=.
By default python search for those modules in same directory as the script first, then, if not available, it will search for python install lib files.
Related
I try to write a simple plugin with gimpfu in python and I tried following those instructions.
1.2. Installation
Gimp-python consists of a Python module written in C and some native python support modules. You can build pygimp with the commands:
./configure
make
make install
This will build and install gimpmodule and its supporting modules, and install the sample plugins in gimp's plugin directory.
Where do I have to execute those commands?
I tried adding my script to the plugins folder but it seems like there is no python module called gimpfu. I believe I have to enable or install it in some way, but I can't find a solutio to do it.
EDIT: It seems like gimpfu is availible in the gimpfy-console insode gimp. It just doesn't seem to be availible for my plugin scripts.
No need to install anything. In the Windows versions Python support is built-in, and the gimpfu import is available when your code is executed by Gimp.
If you don't see the plugin in the menu it is likely a syntax error that doesn't let it run its registration code. See here for some debugging techniques.
However, since you mention PyCharm, you may have another Python interpreter installed and this makes things complicated because there can be conflicts depending on order of installation (and remember, Gimp uses Python 2.7)
Now it all depends if you are really doing a plugin (called from the Gimp menu) or a batch (where Gimp is called from a shell script), which is somewhat different. If you are writing a batch, see this answer for an example.
you don't need to install anything, on windows gimp comes with a python interpreter along with the libraries inside of it.
if you want to run your script from inside GIMP then you should check this answer and you should add the path to gimp to your system PATH environment variable (which is C:\Program Files\GIMP 2\bin on my system) , and instead of calling gimp-console.exe you should replace that with whatever gimp-console is currently available in that folder, the one on my system is gimp-console-2.10.exe.
I want to distribute a python program on, say, Windows and/or Mac, but I don't want to give the user the headache of ensuring there is an appropriate python runtime installed on their machine. And i don't want to interfere with their machine's configuration by, let's say, requesting root privileges and installing a system-wide python runtime on their system that suits my program specifically because it's too invasive and might cause compatibility collisions with other installed versions of the runtime.
I would much rather have a self-contained executable that could be, for example, stored on a USB flash-drive, inserted into the system, and then maybe with a stepping-stone binary executable that just invokes the device-portable runtime on a python script that I provide, I could then run the program as if it were a self-contained binary executable (with only standard-library dependencies).
A link to this binary executable could be published into main-menu program lists, docks, or desktops. And it could be invoked by shell scripts or other executed-by-proxy mechanisms. Such a no-install/self-contained python program could potentially be a first-class user-invokable application. This is what I want to achieve.
I googled around for projects that provided a device-portable/mobile python installation and so far I've only found portablepython.com. Unfortunately it says the project is discontinued and no download link for the project is provided. it listed some similar projects but they all seemed defunkt or with a very different focus.
Does anyone know of an active project that is or includes such an independent/portable/mobile/no-install distribution for python?
or is there some way i could configure python's build system to build a noinstall-friendly product?
any ideas welcome. thanks for your input!
After more searching I found that Python.org publishes its own standalone-python distribution called the embeddable zip file.
This is exactly what I was searching for. It's a basic python standalone runtime that requires relatively few megabytes of storage.
I started with this embeddable distro and then cajoled a standalone copy of pip to work with it. Problem solved.
Improving upon #oreus2020's answer, you can download the embeddable zip file from here. Then, unzip the compressed file to a folder of your choice. Go to the root of your install and find python._pth file and open it in a text editor. Remove the "#" before import site(This file is the one which manages the environment of the portable install. If you want anything to be recognized by the portable python interpreter, just throw the path in here and that's it!). If you want pip, go to this page and save it in the root of your portable install and run it using the portable python interpreter like ./python get-pip.py from a commandline opened at the root of your install. Pip installed! To use the pip, do ./python -m pip <commands> from the commandline opened at the root of your install and then open the python._pth file and insert the following below the "." ./Lib/site-packages ./Scripts. Voila, you got yourself a python portable install!
My python._pth file looks like:
python39.zip
.
# Uncomment to run site.main() automatically
./Repo
./Repo/Code
./Repo/Code/cogs
./Lib/site-packages
./Scripts
import site
If you are still wondering, here is the link to the one I made for myself.
P.S. Pardon my bad English
I'm new to Python, so I think my question is very fundamental and is asked a few times before but I cannot really find something (maybe because I do not really know how to search for that problem).
I installed a module in Python (reportlab). Now I wanted to modify a python script in that module but it seems that the python interpreter does not notice the updates in the script. Ironically the import is successful although Python actually should not find that package because I deleted it before. Does Python uses something like a Cache or any other storage for the modules? How can I edit modules and use those updated scripts?
From what you are saying, you downloaded a package and installed it using either a local pip or setup.py. When you do so, it copies all the files into your python package directory. So after an install, you can delete the source folder because python is not looking here.
If you want to be able to modify, edit, something and see changes, you have to install it in editable mode. Inside the main folder do:
python setup.py develop
or
pip install -e .
This will create a symbolic link to you python package repository. You will be able to modify sources.
Careful for the changes to be effective, you have to restart your python interpreter. You cannot just import again the module or whatever else.
I am developing a plugin for a multi-platform Python program (Deluge). My plugin needs to import some modules which aren't available by default (in my case, the requests module).
On Linux, everything works flawlessly assuming the required modules are installed beforehand (e.g. via pip).
On Windows, the program makes use of python27.dll which comes as part of the installer, so importing modules - even those available on the local Python installation (verified via interpreter) - yields an import error.
I've seen the answers to this question, but I'd like to know if there is a proper way of adding module search paths for Python on Windows specifically. Is it safe to assume C:\Python27\Lib\site-packages will point me to the local Python installation's modules?
EDIT: Is there a different method I could incorporate for using "external" modules? Could I perhaps package other modules into my final .egg file? Not just plain Python, but more sophisticated modules like requests which need to be properly built and may even rely on other modules.
My question seems somewhat inane, but I cannot seem to find any resources for what I need to do.
Essentially I'm using my work computer to write python applications in my spare time. I'm using Python Portable (syntax version 3.2) because I do not have administrative access and can't do things with path variables etc.
How (if possible) do I install or import selenium so I can use it in Python Portable?
Thanks all!
Based on answer found Importing modules on portable python
and How to install external libraries with Portable Python?
Check for what import sys; print sys.path says?
It displays the list of directories and zipfiles where portable python looks for modules to import. Just copy your modules into one of those directories or zipfiles, or sys.path.append('/whatever/dir') if you have your modules in /whatever/dir and want to keep them there (the latter approach will last only for the current session, be it interactive or a script's execution).
Also on their FAQs
You don’t have package I need, can I add it?
For simpler packages you can use easy install or even extract them in site-packages folder of
the Portable Python distribution. However some packages are installing additional dependencies
in windows system folders - in this case your Portable Python distribution will not work once
you move it to some other workstation. Make sure to do proper testing !