The new format is called a Python wheel , which we will look at in the next chapter. An egg file is basically a zip file with a different extension. Python can import directly from an egg. You will need the SetupTools package to work with eggs.
SetupTools is the original mainstream method of downloading and installing Python packages from PyPI and other sources via the command line, kind of like apt-get for Python. The question ask "How to run Python egg files directly without installing them? Adham - the Java example in the question is from the command line not from in Java — mmmmmm. Mark You are inferring what the question is asking based on the example. There is no mention of "command line" in the question.
Adham - which is the only useful interpretation - jar files are run from the command line — mmmmmm. Interpretation is not required when the question is explicitly asking "How to run Python egg files directly without installing them? Python Egg file direct execution steps Suppose if you have egg file and driver file to run through below command.
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Install python. Install Python Launcher for Windows. Installs Python Launcher for Windows for all users. For example, to silently install a default, system-wide Python installation, you could use the following command from an elevated command prompt :.
To allow users to easily install a personal copy of Python without the test suite, you could provide a shortcut with the following command. This will display a simplified initial page and disallow customization:.
Note that omitting the launcher also omits file associations, and is only recommended for per-user installs when there is also a system-wide installation that included the launcher. The options listed above can also be provided in a file named unattend. This file specifies a list of options and values. When a value is provided as an attribute, it will be converted to a number if possible. Values provided as element text are always left as strings. This example file sets the same options as the previous example:.
As some features of Python are not included in the initial installer download, selecting those features may require an internet connection. To avoid this need, all possible components may be downloaded on-demand to create a complete layout that will no longer require an internet connection regardless of the selected features. Note that this download may be bigger than required, but where a large number of installations are going to be performed it is very useful to have a locally cached copy.
Execute the following command from Command Prompt to download all possible required files. Remember to substitute python Once Python has been installed, you can add or remove features through the Programs and Features tool that is part of Windows.
Some options cannot be changed in this mode, such as the install directory; to modify these, you will need to remove and then reinstall Python completely. The Microsoft Store package is an easily installable Python interpreter that is intended mainly for interactive use, for example, by students. Ensure that the app you select is published by the Python Software Foundation, and install it. Python will always be available for free on the Microsoft Store. If you are asked to pay for it, you have not selected the correct package.
After installation, Python may be launched by finding it in Start. Alternatively, it will be available from any Command Prompt or PowerShell session by typing python. Further, pip and IDLE may be used by typing pip or idle. IDLE can also be found in Start.
All three commands are also available with version number suffixes, for example, as python3. It is recommended to make sure that pip and idle are consistent with whichever version of python is selected. Virtual environments can be created with python -m venv and activated and used as normal. If you have installed another version of Python and added it to your PATH variable, it will be available as python. To access the new installation, use python3.
The py. Uninstalling will remove all packages you installed directly into this Python installation, but will not remove any virtual environments.
Because of restrictions on Microsoft Store apps, Python scripts may not have full write access to shared locations such as TEMP and the registry. Instead, it will write to a private copy. If your scripts must modify the shared locations, you will need to install the full installer. Visit nuget. What follows is a summary that is sufficient for Python developers.
With the tool, the latest version of Python for bit or bit machines is installed using:. To select a particular version, add a -Version 3.
The output directory may be changed from. By default, the subdirectory is named the same as the package, and without the -ExcludeVersion option this name will include the specific version installed. Inside the subdirectory is a tools directory that contains the Python installation:.
In general, nuget packages are not upgradeable, and newer versions should be installed side-by-side and referenced using the full path.
Alternatively, delete the package directory manually and install it again. Many CI systems will do this automatically if they do not preserve files between builds. This contains a MSBuild properties file python. Including the settings will automatically use the headers and import libraries in your build.
The package information pages on nuget. The embedded distribution is a ZIP file containing a minimal Python environment.
It is intended for acting as part of another application, rather than being directly accessed by end-users. The standard library is included as pre-compiled and optimized.
The embedded distribution does not include the Microsoft C Runtime and it is the responsibility of the application installer to provide this. Third-party packages should be installed by the application installer alongside the embedded distribution. Using pip to manage dependencies as for a regular Python installation is not supported with this distribution, though with some care it may be possible to include and use pip for automatic updates.
An application written in Python does not necessarily require users to be aware of that fact. The embedded distribution may be used in this case to include a private version of Python in an install package. Depending on how transparent it should be or conversely, how professional it should appear , there are two options. Using a specialized executable as a launcher requires some coding, but provides the most transparent experience for users. With a customized launcher, there are no obvious indications that the program is running on Python: icons can be customized, company and version information can be specified, and file associations behave properly.
The simpler approach is to provide a batch file or generated shortcut that directly calls the python. In this case, the application will appear to be Python and not its actual name, and users may have trouble distinguishing it from other running Python processes or file associations.
With the latter approach, packages should be installed as directories alongside the Python executable to ensure they are available on the path.
With the specialized launcher, packages can be located in other locations as there is an opportunity to specify the search path before launching the application. Applications written in native code often require some form of scripting language, and the embedded Python distribution can be used for this purpose. In general, the majority of the application is in native code, and some part will either invoke python. For either case, extracting the embedded distribution to a subdirectory of the application installation is sufficient to provide a loadable Python interpreter.
For more information, see also the current Python documentation on the use and location of distutils configuration files. The standalone command will not use that file. Install all packages as zip files, even if they are marked as unsafe for running as a zipfile. Changed in 0. This can be useful if a package does something unsafe, but not in a way that EasyInstall can easily detect.
This can be as simple as:. You must always explicitly use this option if you want it to be active. However, if you supply the --upgrade or -U flag, EasyInstall will always check the package index and --find-links URLs before selecting a version to install.
In this way, you can force EasyInstall to use the latest available version of any package it installs subject to any version requirements that might exclude such later versions. Set the installation directory. It is up to you to ensure that this directory is on sys. Set the script installation directory. Otherwise, this setting defaults to the location where the distutils would normally install scripts, taking any distutils configuration file settings into account.
This is useful if you need to install multiple versions of a package, but do not want to reset the version that will be run by scripts that are already installed.
Use the user-site-packages as specified in PEP instead of the global site-packages. Copy all needed distributions to the installation directory, even if they are already present in a directory on sys. In older versions of EasyInstall, this was the default behavior, but now you must explicitly request it. By default, EasyInstall will no longer copy such distributions from other sys. Note that as of 0. You will see warning messages for any eggs that EasyInstall skips, before it falls back to an older version or attempts to download a fresh copy.
Eggs and archives found by way of --find-links are only downloaded if they are needed to meet a requirement specified on the command line; links to unneeded packages are ignored. If all requested packages can be found using links on the specified download pages, the Python Package Index will not be consulted unless you also specified the --upgrade or -U option. Note: if you want to refer to a local HTML file containing links, you must use a file: URL, as filenames that do not refer to a directory, egg, or archive are ignored.
Note that on the command line, you will probably have to surround the URL list with quotes, so that it is recognized as a single option value. When used, --find-links is ignored. When a package is requested that is not locally available or linked from a --find-links download page, the package index will be searched for download pages for the needed package, and those download pages will be searched for links to download an egg or source distribution.
Only find and download source distributions for the specified projects, unpacking them to subdirectories of the specified --build-directory.
EasyInstall will not actually build or install the requested projects or their dependencies; it will just find and extract them for you. See Editing and Viewing Source Packages above for more details. Set the directory used to build source packages. If a package is built from a source distribution or checkout, it will be extracted to a subdirectory of the specified directory. If a file or directory of that name already exists in the given directory, a warning will be printed to the console, and the build will take place in a temporary directory instead.
This option is most useful in combination with the --editable option, which forces EasyInstall to only find and extract but not build and install source distributions. See Editing and Viewing Source Packages , above, for more information.
Using -v or --verbose increases the detail level to include individual file-level operations, link analysis messages, and distutils messages from any setup scripts that get run. If you include the -v option more than once, the second and subsequent uses are passed down to any setup scripts, increasing the verbosity of their reporting as well. This option is passed down to any setup scripts run, so packages should not actually build either. If you are installing from a source distribution, and are not using the --zip-ok option, this option controls the optimization level for compiling installed.
It does not affect the compilation of modules contained in. As of 0. This is intended as a convenience for tools that wrap eggs in a platform-specific packaging system. Restrict downloading and spidering to hosts matching the specified glob patterns. Multiple patterns can be specified by separating them with commas. EasyInstall displays all blocked URLs, so that you can adjust your --allow-hosts setting if it is more strict than you intended.
Some sites may wish to define a restrictive default setting for this option in their configuration files , and then manually override the setting on the command line as needed. Use the specified directory as a base for computing the default installation and script directories.
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