I'm new to Python so this may sound silly.
I want to use a Python library I've found on Github, lets say on https://github.com/praw-dev/praw, and I want to be able to do git pull in the future to pull the latest commits.
Question: Should I git clone <git url> in the project directory and delete everything except the praw directory, then in my python script do a import praw?
In iPython,
import praw
gives the error ImportError: No module named praw
Directory Structure
~\myProject\
praw\
myNotebook.ipynb
Actually, if given package is not on PyPI (or you want a specific branch) you can still install it through pip from GitHub with:
pip install git+https://github.com/[repo owner]/[repo]#[branch name]
And for your problem it would be (although #pandita's answer is correct for normal usage case):
pip install git+https://github.com/praw-dev/praw.git
For more information check this answer.
Experimental Python module finder/loader from github, like in golang.
So, in golang we can import like:
import "github.com/parnurzeal/gorequest"
But in python we should install package by our hands:
pip install requests
And import it like:
import requests
But with this magic package and power of PEP-0302 we can do it automatically:
from github_com.kennethreitz import requests
assert requests.get('https://github.com/nvbn/import_from_github_com').status_code == 200
Installation
You should have git, Python 3.2+ and pip:
pip install import_from_github_com
Reference: https://github.com/nvbn/import_from_github_com
Just clone the files in any dir on your python path and then build the lib typically with python setup.py install from the command line.
I typically clone a libray form git in my site_libraries folder ( the folder that holds all of your pip installed packages ). From there you can pull and then build the libraries from git just like any other git repo. Having the files there is nice because all of your libs are in once place on your python path.
You might want to consider using pip instead of git to install and upgrade the package (that is unless you have a pressing reason to use git).
pip install praw
to update the package you can do
pip install --upgrade praw
Also have a look here for further information on how to use pip.
Related
i've installed a python project, and it imports modules(Like almost every project). The problem is when i want to install them(because i haven't got the modules), for example: In the project is imported a module called "a" but when i go and install "a" with pip install a, it says ERROR: Could not find a version that satisfies the requirement a (from versions: none) ERROR: No matching distribution found for a. How could i know the name of the module that is imported in that python project?
Edit:
btw i just found out the module that the project uses comes in the zip where the python project is. How could i install it so it works?
All pip packages are listed here. If you want to import a module called a inside a python script, the command to install it could be sometimes pip install b. Because the name of the stored package can varied from the python import name. To find how to install it the best is to get the pypi url of your package. You can googling the python error ModuleNotFoundError: No module named 'dgvd', it always show you the pypi url in top links.
The good practice in a project is to have a txt file called requirement.txt that you create in bash using this command:
pip freeze > requirement.txt
Then install all packages in once using:
pip install -r requirement.txt
For installing from zip simply use:
pip install *.zip
or specify the path directly:
pip install <path to .zip>
pip install ./my-archive.zip
Same applies for a tarball or any other format. It can be even a folder. However, it has to include a proper setup.py or other mechanism for pip to install it and pip has to support the packaging format (be it archive, networking protocol, version control system (git prefix), etc).
pip install ./my-folder
pip install ./
pip install .
pip install ..
etc
If, however, there is no setup.py present, you'll need to simply copy-paste the files somewhere where your project/module resides (or set PYTHONPATH or sys.path to that folder) to be able to import them. See this or this question for more.
I am learning how to use venv here: https://packaging.python.org/guides/installing-using-pip-and-virtual-environments/#installing-from-source
And it says I can install a source package by:
python3 -m pip install .
Which works, but now if I do pip freeze then I see:
my-package # file:///Users/joesmith/my-package
The problem is if I export this to a requirements.txt and try to install this environment on another machine then it won't work cause the path to source changed obviously.
What is the proper way to use a source package locally like i did but also export it afterwards so that another person can recreate the environment/run the code on another machine?
Pip has support for VCS like git. You can upload your code to git (e.g. Github, Gitlab, ..) for example and then use the requirements.txt. like this:
git+http://git.example.com/MyProject#egg=MyProject
https://pip.pypa.io/en/stable/cli/pip_install/#vcs-support
You would install package from PyPI rather than from source.
i.e. pip install requests
In this way other developers will also easily run your project.
I am extremely new in python so i cant figure out a way to install a standalone python module hosted by a third party. Ex https://github.com/cvangysel/gitexd-drupalorg/tree/master/drupalorg
How to install this specific python module DrupalHash . Should i use pip ? I tried to read the documentation Installing Python Modules but i could not quite get it.
Any help ?
Seeing as the linked repo doesn't contain a setup.py, which would be required to install it with pip or easy_install, and the last commit was over 4 years ago, I'd just copy the drupalpass.py file into your local project and use it with a simple from drupalpass import DrupalHash.
The module you are linking doesn't seem to be available on PyPI, you will need to clone the repository to use the library.
For packages that may be available on PyPI, you can install pip:
easy_install pip
Then, you will be able to install your packages:
pip install *package name*
I am trying to fix some bugs of an open source package on Github. So I git clone the fork to my local directory. The question is that how I can override the installed version with the version that I am developing.
Note:
1. This particular package does not support the setup.py develop command
2. This particular package is managed by Anaconda's conda. I have other packages in the same situation that is managed by pip
When you install a package it resides in <env dir>lib/python3.4/site-packages/<Any package> or you can place it in your app and import it in code.
If you have mongoengine code in your my_lib directory you can import it like
from my_lib import mongoengine
I figured this out. Just use:
pip install -e
I'm trying to install the module mockupbase in order to import HTMLParser for my Flask Web App. Mockupbase is not a package/module within the Python Package Index, so pip install doesn't work in my visual studio development environment. The only resource I could find online about installing third party libraries was http://flask.pocoo.org/docs/0.10/extensiondev/, but this link says extensions must be registered under the python package index. I feel like there should be an alternative route to installing third party packages without registering them on python package index. I'm familiar with installing packages on my local computer, but am not sure how to implement this on my flask web project.
How do I install a third party python module/library not registered on Python Package Index for my flask web application
It seems that we cannot install module mockupbase on VS using pip and easy_install.
However, I have ever install custom module as following steps, you can try it.
For example, I create a Hello.py file and store it into C:/Python folder.
Then, I can use it via this method:
import sys
sys.path.append('c:/python')
import hello
hello.hello() # hello,world
For this issue, I recommend you refer to this documents:The module-search-path
And you can see this post.
You can specify url, local file path, ... instead of package name. By specifying url, file path, pip will try to download it, unpack it and install it.
According to Installing Packages - User Guide - pip documentation,
pip supports installing from PyPI, version control, local projects,
and directly from distribution files.
If you have multiple packages, you can follow Fast & Local Installs:
Often, you will want a fast install from local archives, without
probing PyPI.
First, download the archives that fulfill your requirements:
$ pip install --download <DIR> -r requirements.txt
Then, install using --find-links and --no-index:
$ pip install --no-index --find-links=[file://]<DIR> -r requirements.txt