With Python 3, you now have access to the many tools that can help you write your Python apps.
In this article, we’ll walk you through the basic tools you’ll need for building your first Python app, and we’ll go over the various types of features that are available to you to help you get your Python program up and running quickly.
This is an important topic, so let’s take a closer look at the most popular Python language features.
Type in a command to launch your first python app and see what you get: You’ll see a new list of the most common Python commands available, along with a list of commands that you can use to start your app.
For instance, typing python app would open up the app editor for you.
There are also many other tools that are more specific to a particular app, like installing a package, using a shell command, or editing a database table.
Here’s a list: >>> import sys >>> sys.argv = ‘__main__’ >>> app = sys.exec(sys.argc, 1, ‘app’) >>> app.run() (The ‘__name__’ is the command that you typed.)
>>> app (app.py, __name__=’my_app’) app.py(__name __main__) Python is great for writing small and quick Python apps, but it’s often difficult to get Python apps to run reliably.
That’s where PyInstaller comes in.
PyInstallers is a package manager that offers a number of different ways to manage Python dependencies and libraries, as well as to download and install dependencies.
The easiest way to install a Python package is through a command-line tool called pip: pip install -r requirements.txt .
A few Python commands provide a better way to do that, and they’re the ones that you’ll use most often.
>>> import os >>> os.path.join(__dirname, ‘requirements.txt’) >>> os import pyinstaller >>> import PyInstallera >>> os,app = os.environ[‘PY_PYTHON_VERSION’] >>> os app(__version__=’3.2.6′) >>> import pyInstaller >>> os os.pip install -l requirements.py The next option to look at is to use the pip install command.
The -l option tells pip that it should install dependencies on a specific target.
This can be useful if you want to install dependencies only for the py installation, or if you need to install some dependencies that aren’t currently required.
>>> os x64(os.path, ‘pyinstaller-1.5.4.tar.gz’, os.listdir(‘requirements’))) >>> osx64(__builtin__, os.builddir=’requirements’, os) >>> os python app(osx64, __builtin __builtins__) The last command is the PyInstallerate command.
This tells pip to download the required files from the Python source code.
There’s a lot of information in the PyPackaging format that PyInstallable provides, so it’s important to check the Python Package Index (python.pypackage) if you’re unsure how to find a specific file.
Python packages are typically listed in the INSTALLED_APPS section of the PyPI site, and the PyPip module lists all the Py packages that you’re likely to need.
PyPackage is a very useful tool for quickly finding Python packages.
You can also download a copy of the Python code from GitHub.
PyPIP is useful because it’s also available as a module in the Python standard library.
The PyPipe module is available in Python 2.7 and later.
This means that you don’t have to download a new PyPI repository each time you want a Python-specific PyPiper version.
You could even run PyPiped directly from your favorite shell, like bash: pyinstall pip pip install pyPipe Note that Python doesn’t support pip install on the command line, so you’ll have to explicitly call pip install .
You can install Python packages using pip install –no-install .
This is particularly useful if your Python code is a bit complicated.
The Python Package Manager Python Package Managers are tools that let you install Python dependencies, like the ones in pip or pip install.
They are very powerful tools, and if you run your Python programs through them, they’re usually very easy to manage.
Python Package Management has a wide variety of options, but they all have the same basic idea: you can download Python dependencies from GitHub, or you can specify them in a Python Package List.
To install dependencies, you just need to enter the exact path to the Python files in the dependencies list.
Then you can just run the package manager command with the exact filename and the exact package name you want.
You just type the command, and pip