Run binary file in python
Python is one of my favorite programming languages. That being said, if you've ever had to deploy an application written in Python then you know just how painful it can be. Fortunately, there are some pretty awesome open-source tools that can be used to package a Python program into a standalone binary executable that contains everything needed to run binary file in python the application i.
Python interpreter, program code, libraries, data, etc. In this article, I'll show you how to create a binary executable version of a graphical "Hello World" application using PyInstaller on Windows. Of course, make sure that you already have Python 2. The demo app in this article uses the wxPython library, so you run binary file in python need to install that if you plan to follow along, but it is not necessary for using PyInstaller.
This app will be a simple "Hello World" graphical app. Save the source code below as app. The source code shown above run binary file in python taken from the wxPython Getting Started guide, which you may be interested in reading if you want to create graphical Python applications.
PyInstaller can be installed using Pipthe Python package manager. If the build was successful, the final executable, app.
See the PyInstaller Manual for more configuration information. You do not need to specify additional modules in the command as they will be automatically pulled via import statements. On my system the final executable is a sizable 8. The executable is relatively large because the Python interpreter, the application code, and all the required libraries are all packaged in as specified by the --onefile option.
Though convenient, there are some implications with this approach which you should be aware of before releasing using this method. See the PyInstaller Manual for more information on run binary file in python. After the build, an app.
This file contains all of the options used to run PyInstaller, and can be fed back into PyInstaller for future builds in place of the command line options, if desired.
IconEden offers some nice royalty-free icons, so I'll use one of theirs for this demo. This is an example of what run binary file in python icon looks like when added to the application and viewed through Windows Explorer:.
The following file taken from the PyInstaller test suite is used by PyInstaller to add version information to the executable. Run binary file in python this file as version. When you have your version. Of course, I glossed over some of the complicated bits like runtime libraries, 3rd party modules, spec files, and program data files. The PyInstaller Manual covers all of this, so give it a read. Creating an Executable from a Python Script Python is one of my favorite programming languages.
First Things First Of course, make sure that you already have Python 2. You will need to install PyInstaller as well, but I will get to that in a second. The App This app will be a simple "Hello World" graphical app. Now, fire up your console and run the app as usual. It's not very exciting, but this is just a demo.
Let me briefly describe the options that are being used: If you do not specify this option, the libraries, etc. If you're releasing a non-graphical application i. The basename of this script will be used to name of the executable, however you may specify an alternative executable name using the --name option.
Adding an Icon IconEden offers some nice royalty-free icons, so I'll use one of theirs for this demo. Adding Version Information The following file taken from the PyInstaller test suite is used by PyInstaller to add version information to the executable. Look at the Properties to see more information. Final Thoughts So that's run binary file in python it. If PyInstaller isn't what you're looking for, here are some alternatives:
Python, being a general purpose programming language, lets you run external programs from your script and capture their output. This is useful run binary file in python many machine learning tasks where one would like to use a command line application in a Python-driven pipeline. Some people seem to stick to the native Python tools like scikit-learnbecause they offer a comfort of end-to-end solution. On the other hand, command line binaries might be faster and provide functionality not available in Python.
Fortunately the language has utilities for integrating such tools. On Unix there is a way to remedy this: The option controls the size of the hash table, and typically higher is betteras small table sizes result in hash collisions. This command makes VW read the given cache file as input. Then we read it. Particularly the split between output and error streams is what interests us. Sometimes one would like to combine stdout and stderr into a single stream. The standard streams have their numbers, respectively 0, 1 and 2 for input, output and error.
Therefore, to redirect stderr to stdout as we did above in a Unix shell you would write:. Note the ampersand in front of 1 - without it, the shell would treat 1 as a file name. On Unix, it is possible to refer to the streams by their filesystem names: In the example above we use a little trick: The shell argument causes the function to execute a given command using a shell. Once we have the output, we can extract the information we want from it. This can be done with regular expressions.
They are a language unto themselves, but even a bit of pattern matching gets you a long way. In short, parentheses in the run binary file in python define a sub run binary file in python which we would like to capture. The rest works the same. We tested a range of 7 to 29 bits on the KDD10B dataset using one pass and no quadratic features:. Average log loss for KDD10b, one pass, run binary file in python quadratic features. It run binary file in python that for this case the optimal number of bits is Average log loss for Amazon Access Control dataset, using quadratic features and many passes with early stopping.
The code is available at GitHub. Check out the plumbum library, which attempts to make running shell commands from Python easy. Motivation Run binary file in python people seem to stick to the native Python tools like scikit-learnbecause they offer a comfort of end-to-end solution. Therefore, to redirect stderr to stdout as we did above in a Unix shell you would write: Processing the output Once we have the output, we can extract the information we want from it.
The thing is, in VW output there is a line with info about average loss, which run binary file in python like this: When performing multiple passes, VW will indicate using the holdout set for calculating loss: We tested a range of 7 to 29 bits on the KDD10B dataset using one pass and no quadratic features: Average log loss for KDD10b, one pass, no quadratic features It seems that for this case the optimal number of bits is Average log loss for Amazon Access Control dataset, using quadratic features and many passes with early stopping The code is available at GitHub.