I am creating a new Django project through PyCharm, I already have Virtualenv selected instead of conda, so do I have to create a virtual environment through the terminal and install all libraries? I am not planning to upload this site on domain or server, it's for my learning, will upload it on Heroku or similar thing to show my practice and work to people.
You don't have to install it again. Check in your PyCharm settings where the virtual environment has been installed, then all you have to do is:
. path/to/virtualenv/bin/activate
Related
I am setting up a new project. I have installed virtual environment. But Do I have to install django again in that directory??
Each project should have its own, separate virtual environment. Reusing the same virtual environment for multiple projects kind of defeats the whole point of virtual environments.
When you want to create a new project, you first create a new virtual environment for it.
A newly created virtual environment is empty, so you have to install Django into it before you can run django-admin startproject.
Everytime you want to run an existing project, e.g. with python manage.py runserver, you first have to activate the virtual environment.
No, you need not to install django again. You can invoke the virtual environment again.
If you have installed virtual environment in the project folder and have configured it that way, then you perhaps have to create a new virtual environment.
There are good tools available:
pyenv
virtualenvwrapper
A good reference point can be RealPython for managing different versions of django.
Yes, you should install Django with every project you start with.
I am trying to deploy my django app in to production on a centos server. I have an app running on my computer(not server) with a code repository that doesn't utilize a virtual environment, and i wish i had set that up to begin with. I would like the production stage of the django app be run with a virtual environment, and was wondering what was the best way to go about this.
I am very cloudy on how this would work out. Would i need to set up the django app on my computer with a virtual environment, and then move the code repository to the server and go about it that way?
My understanding is the purpose of the virtual environment is to keep tabs and easily install any dependecies and software updates need to run the django app.
So the question is: Should i not worry about setting up a virtual environment on my computer, but start one on my server and start from there? Or would i run into problems when i try to git clone my project to the server because there isnt a virtualenv setup from the repository.
And if i should have it setup up on my local django app on my computer, how to i go about setting it up on an existing webapp?
The app doesn't care whether it's running in a virtualenv or not. You can simply create a new virtualenv on the server and redeploy the app inside it, reinstall the dependencies, then point your web server at the new app.
I am a new to Django and have 0 experience with this framework.
I cloned a project from git it came with requirements.txt file, but I am not sure how to run it.
Do I need to create virtual environment first and clone the project into the directory of the virtual environment, and then install the requirements?
Do I need to clone the project first into some folder and then create the virtual environment inside this folder and then install the requirements?
Do I need to use any special IDE to run the project? I tried opening the project in PyCharm, without creating a virtual environment first, and it asked me if I want to install the requirements.
I would be glad if someone could explain what is the correct way to run an already existing project.
Let's come to your doubts one by one :
Cloning a repo has nothing to do with Django. You are just making a copy of the code on your disk. Now the copy can be kept anywhere you like(say in ~/Desktop). Also, the directory of a virtual envt. just contains the code of modules you might directly import(like Django), and has nothing to do with the code of the django project. So cloning can be done before or after activating the virtual envt.
You need not create a virtual envt., but you should. A virtual envt. just ensures that you can have different versions of the same module for your different projects. It keeps things organised. So, for example you can create two different virtual envt.'s one with Django=2.0 and another with Django=1.9, to test your website for the two different Django versions.
requirements.txt contains all the modules you will be needing to run the django application. So you first create a virtual envt, activate it and then in the virtual envt., install all the modules you will need. Generally do pip install -r requirements.txt
Now all the required modules are installed, To run the website on a local server( which Django will create for you ), do python manage.py runserver and open in the browser.
No, you don't need an IDE to run the django project. Editing the code on any text editor and running the server from terminal works just fine.
P.S: If you are completely new to python, I would recommend using the conda python distribution. You can create new virtual envt. using conda create as well.
1.Grab a copy of the project.
git clone new_project.git
2.Create a virtual environment and install dependencies.
mkvirtualenv new_project
pip install -r requirements.txt
3.Duplicate new_project/new_project/local_settings_example.py and save as local_settings.py.
4.Enter your database settings in local_settings.py.
5.Initialize your database.
python ./manage.py syncdb
python ./manage.py migrate
6.If your app has a custom user model, you'll need to create a new superuser for the admin.
python ./manage.py createsuperuser
7.Run the development server to verify everything is working.
python ./manage.py runserver
Assuming the django project repository is on github and I have had no interaction with it previously.
So: I cd to a new directory on my computer.
I clone the repository.
If the django project is using postgresql, do I have to have postgresql installed on my local machine?
Do I have to be running in a virtual environment to use a specific interpreter?
Thanks Peter
Database
You can actually use another database on your local copy if you choose, although in general it's a good idea to use the same database locally.
If you're going to be using postgres locally, yes you'll need to install it and then create your local database. Once you have your local database setup, you'll need to change some config values of your DATABASES property in settings.
Packages
Your project will also have some dependencies which should be listed in a requirements.txt file at the root directory. If it is not, you'll need to find out which packages need to be installed via pip freeze in the production console.
Virtual Env
You should use a virtual environment, but it's not completely necessary to get your project up and running. Virtualenvs allow you to have different installs and runtimes for different projects.
Other
Every project is different, and there will most likely be some other things that pop up. However, this should get you going in the right direction.
This is a Django and Python and maybe just a general web development question.
what's the difference between using virtualenv vs vagrant vs virtual box and etc... ?
I'm kinda confused as to when to use which one :/ I've been using virtual env this whole time and creating new virtual environments for different projects....
Is this the right way to do it?
One virtualenv per project?
I'm not really sure when and where vagrant comes into play...Am I supposed to set up vagrant and then use virtualenv?
This is probably a silly question but...if I were to be working on this project with other people. Would they too have to set up a virtual env? Just to collaborate?
Wouldn't it make more sense that we all work on our local machines and then push it into the main branch? I'm just kinda confused .... I feel like I'm doing it all wrong...
Thanks for the replies everybody!
Virtualenv sets up a local sandbox for you to install Python modules into.
Vagrant is an automation tool for creating Virtual Machines.
VirtualBox is a free, open source environment for running virtual machines, like those created by Vagrant.
Virtualenv is really about all you'll need to do sandboxed development on your local machine. We use Vagrant at my work to automate the creation of VMs. This way new developers coming on to a project have basically zero configuration to do in order to start working.
If you're collaborating with other devs, they don't need to do any of the above to work on your Django project, but if there's a lot of configuration involved that can't be done with pip and a requirements.txt, then you might look at Vagrant to ease some of that automation.
But you are correct in your assumption that you can all just work on a local branch and push back to the repo. Everything else is just icing.
Virtualenv is a python construct that holds a specific set of packages, separate from your system packages. The version of Python and its packages that came with your OS or that you installed separately is a "system package".
Virtualbox is totally different -- it's a VM, an entire operating system in a box.
I'm not familiar with Vagrant.
All you need is virtualenv. Create a new virtualenv for each project (they're very lightweight!) You need to do this because the whole point of virtualenv is to isolate the exact packages and versions of those packages you need for your project. Then activate the virtualenv and use pip install to install the packages you need, presumably starting with Django itself.
Once you have all the packages you need, use pip freeze > requirements.txt to create a file called requirements.txt that records all of the packages you've decided to use.
When other people collaborate on your project, they can start a virtualenv, pull your code into it, and run pip install -r requirements.txt to replicate your environment. They can even modify requirements.txt, push that back to you via your version control system, and you can run pip install -r requirements.txt yourself to modify your environment to match their changes.
This is all essential because without virtualenv, the problem of, for instance, having one project on your computer that requires Django 1.4 and one that requires Django 1.5 becomes very complicated.
Virtualenv is not an entire operating system in a box, just a python environment, so even if you are using it, you are still working on your local machine.
We use virtualenv and a Ubuntu virtual machine. Here's why:
virtualenv allows us to have isolated Python environments on a given operating system instance
Using Ubuntu dekstop in a virtual machine for our Python development mimics what it will look like when deployed on the server which is also Ubuntu. This means that we understand precisely the external OS package dependencies and configuration. You don't get this easily when you use OSX or Windows for development and Linux for deployment.
One important point is that a virtual machine is portable. You can take a snapshot and deploy it elsewhere easily. With Vagrant and Ansible combination you can automate a remote deployment.