$ brew update Step 3: Install Python. It’s bad form to use the system Python as your main interpreter. And this is especially true if you intend on using virtualenv. Before we go any further, let’s install Python via brew: $ brew install python Step 4: Installing boost. But now it’s time to install boost. Mac OS X has a copy of Python preinstalled, but this makes sure you get the newest version. Brew install python Two Ways to Install Cassandra. A Using Homebrew (This led to connection refused and compilatoin errors during cassandra and cqlsh startups for me) B Using Binaries. A Using Homebrew Install cql.
- Brew Install Python 3.5
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- Brew Install Python 3.5 Online
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Warning: This is an old version. The latest stable version is Version 2.0.x.
Brew Install Python 3.5
We recommend using the latest version of Python 3. Flask supports Python 3.5and newer, Python 2.7, and PyPy.
These distributions will be installed automatically when installing Flask.
Werkzeug implements WSGI, the standard Python interface betweenapplications and servers.
Jinja is a template language that renders the pages your applicationserves.
MarkupSafe comes with Jinja. It escapes untrusted input when renderingtemplates to avoid injection attacks.
ItsDangerous securely signs data to ensure its integrity. This is usedto protect Flask’s session cookie.
Click is a framework for writing command line applications. It providesthe
flaskcommand and allows adding custom management commands.
These distributions will not be installed automatically. Flask will detect anduse them if you install them.
Blinker provides support for Signals.
SimpleJSON is a fast JSON implementation that is compatible withPython’s
jsonmodule. It is preferred for JSON operations if it isinstalled.
python-dotenv enables support for Environment Variables From dotenv when running
Watchdog provides a faster, more efficient reloader for the developmentserver.
Use a virtual environment to manage the dependencies for your project, both indevelopment and in production.
What problem does a virtual environment solve? The more Python projects youhave, the more likely it is that you need to work with different versions ofPython libraries, or even Python itself. Newer versions of libraries for oneproject can break compatibility in another project.
Virtual environments are independent groups of Python libraries, one for eachproject. Packages installed for one project will not affect other projects orthe operating system’s packages.
Python 3 comes bundled with the
venv module to create virtualenvironments. If you’re using a modern version of Python, you can continue onto the next section.
If you’re using Python 2, see Install virtualenv first.
Create an environment¶
Create a project folder and a
venv folder within:
If you needed to install virtualenv because you are using Python 2, usethe following command instead:
Activate the environment¶
Before you work on your project, activate the corresponding environment:
Your shell prompt will change to show the name of the activated environment.
Within the activated environment, use the following command to install Flask:
Flask is now installed. Check out the Quickstart or go to theDocumentation Overview.
Living on the edge¶
Brew Install Python 3.5 Download
If you want to work with the latest Flask code before it’s released, install orupdate the code from the master branch:
If you are using Python 2, the venv module is not available. Instead,install virtualenv.
On Linux, virtualenv is provided by your package manager:
If you are on Mac OS X or Windows, download get-pip.py, then:
Brew Install Python 3.5 Online
On Windows, as an administrator:
Brew Install Python 3.5 Free
Now you can return above and Create an environment.