11/23/2021»»Tuesday

Pip Install Python 3.7 Mac

Someone may be curious about whether Intel-based Python apps can work well on Apple M1 Mac. I recently did a test with Dynamsoft Python Barcode SDK, which is built with native x86_64 libraries and CPython. It turned out that there was no issue using pip to install the wheel package and running my Python barcode reader app.

Python 3 Pip Install Mac Operating System Note that in order to avoid potential conflicts with other packages it isstrongly recommended to use a virtual environment (venv) or a conda environment. Using such an isolated environment makes it possible to install a specificversion of scikit-learn with pip or conda and its dependencies independently. $ brew switch python 3.7 Error: python does not have a version '3.7' in the Cellar. Python's installed versions: 3.7.61 and restarted the computer, but without success. So how to install python 3.7 as the standard-python-installation on a mac? (Could be also python3.8 by all means). Install Python 3.7 & Python 3.9. Go to python download page and click the related link to download.; After download, double click the installer to install it follow the wizard ( you can refer Install Python Linux And MacOS Version Tutorial). May 12, 2019 Python 3.7.0a4 - Jan. Download Mac OS X 64-bit/32-bit installer; Python 3.6.4rc1 - Dec. Download Mac OS X 64-bit/32-bit installer; Python 3.7.0a3 - Dec. Download Mac OS X 64-bit/32-bit installer; Python 3.7.0a2 - Oct. Download Mac OS X 64-bit/32-bit installer; Python 3.7.0a1 - Sept.

Installing Pip and Python Barcode Wheel Package

When you open the terminal app and type in Python3 the first time, a prompt dialog will pop up for installing the command line developer tools.

Click Install and wait a while for installing the relevant tools. After that, you can run python3 successfully in the terminal.

The next step is to install pip:

Once pip is ready, you can try to install Dynamsoft Python Barcode SDK:

Don’t be surprised if you see the failure message.

You are trying to install an x86_64 wheel package on ARM64 architecture. However, don’t be frustrated because Rosetta 2 can make it work. Let’s take a look at the Python3 architecture:

As you can see the Python 3 is a universal app, supporting x86_64. Therefore, we can install the x86_64 wheel package by specifying the arch:

Congratulations! You have installed Dynamsoft Python Barcode SDK. From now on, you can get started to create a barcode scanning app with a webcam.

Python

Building Webcam-based Python Barcode Reader on Apple M1 Mac

Install OpenCV-Python for capturing webcam video stream:

Open a camera and display the video stream in real-time:

Since scanning barcode is a CPU-intensive task, we should run it in Python Process rather than Python thread:

Note: you need a valid SDK license as well.

In the main process, create two queues for continuously sending image frames and receiving barcode scanning results:

Now, we can test the Python barcode program:

One more thing, you may fail to run the app due to the camera permission restriction. Instead of the terminal app, you can install iTerm2 to request the camera access.

Finally, we can do barcode scanning on Apple M1 Mac.

Source Code

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As a popular open source development project, Python has an activesupporting community of contributors and users that also make their softwareavailable for other Python developers to use under open source license terms.

This allows Python users to share and collaborate effectively, benefitingfrom the solutions others have already created to common (and sometimeseven rare!) problems, as well as potentially contributing their ownsolutions to the common pool.

This guide covers the installation part of the process. For a guide tocreating and sharing your own Python projects, refer to thedistribution guide.

Note

For corporate and other institutional users, be aware that manyorganisations have their own policies around using and contributing toopen source software. Please take such policies into account when makinguse of the distribution and installation tools provided with Python.

Key terms¶

  • pip is the preferred installer program. Starting with Python 3.4, itis included by default with the Python binary installers.

  • A virtual environment is a semi-isolated Python environment that allowspackages to be installed for use by a particular application, rather thanbeing installed system wide.

  • venv is the standard tool for creating virtual environments, and hasbeen part of Python since Python 3.3. Starting with Python 3.4, itdefaults to installing pip into all created virtual environments.

  • virtualenv is a third party alternative (and predecessor) tovenv. It allows virtual environments to be used on versions ofPython prior to 3.4, which either don’t provide venv at all, oraren’t able to automatically install pip into created environments.

  • The Python Package Index is a publicrepository of open source licensed packages made available for use byother Python users.

  • the Python Packaging Authority is the group ofdevelopers and documentation authors responsible for the maintenance andevolution of the standard packaging tools and the associated metadata andfile format standards. They maintain a variety of tools, documentation,and issue trackers on both GitHub andBitbucket.

  • distutils is the original build and distribution system first added tothe Python standard library in 1998. While direct use of distutils isbeing phased out, it still laid the foundation for the current packagingand distribution infrastructure, and it not only remains part of thestandard library, but its name lives on in other ways (such as the nameof the mailing list used to coordinate Python packaging standardsdevelopment).

Pip Install Python 3.7 Mac

Changed in version 3.5: The use of venv is now recommended for creating virtual environments.

See also

Basic usage¶

The standard packaging tools are all designed to be used from the commandline.

The following command will install the latest version of a module and itsdependencies from the Python Package Index:

Note

For POSIX users (including macOS and Linux users), the examples inthis guide assume the use of a virtual environment.

For Windows users, the examples in this guide assume that the option toadjust the system PATH environment variable was selected when installingPython.

It’s also possible to specify an exact or minimum version directly on thecommand line. When using comparator operators such as >, < or some otherspecial character which get interpreted by shell, the package name and theversion should be enclosed within double quotes:

Normally, if a suitable module is already installed, attempting to installit again will have no effect. Upgrading existing modules must be requestedexplicitly:

More information and resources regarding pip and its capabilities can befound in the Python Packaging User Guide.

Creation of virtual environments is done through the venv module.Installing packages into an active virtual environment uses the commands shownabove.

See also

How do I …?¶

These are quick answers or links for some common tasks.

… install pip in versions of Python prior to Python 3.4?¶

Python only started bundling pip with Python 3.4. For earlier versions,pip needs to be “bootstrapped” as described in the Python PackagingUser Guide.

See also

… install packages just for the current user?¶

Passing the --user option to python-mpipinstall will install apackage just for the current user, rather than for all users of the system.

… install scientific Python packages?¶

A number of scientific Python packages have complex binary dependencies, andaren’t currently easy to install using pip directly. At this point intime, it will often be easier for users to install these packages byother meansrather than attempting to install them with pip.

See also

… work with multiple versions of Python installed in parallel?¶

On Linux, macOS, and other POSIX systems, use the versioned Python commandsin combination with the -m switch to run the appropriate copy ofpip:

Appropriately versioned pip commands may also be available.

On Windows, use the py Python launcher in combination with the -mswitch:

Common installation issues¶

Installing into the system Python on Linux¶

On Linux systems, a Python installation will typically be included as partof the distribution. Installing into this Python installation requiresroot access to the system, and may interfere with the operation of thesystem package manager and other components of the system if a componentis unexpectedly upgraded using pip.

Pip Install Requests Python 3.7 Mac

On such systems, it is often better to use a virtual environment or aper-user installation when installing packages with pip.

Pip not installed¶

It is possible that pip does not get installed by default. One potential fix is:

There are also additional resources for installing pip.

Installing binary extensions¶

Python has typically relied heavily on source based distribution, with endusers being expected to compile extension modules from source as part ofthe installation process.

With the introduction of support for the binary wheel format, and theability to publish wheels for at least Windows and macOS through thePython Package Index, this problem is expected to diminish over time,as users are more regularly able to install pre-built extensions ratherthan needing to build them themselves.

Some of the solutions for installing scientific softwarethat are not yet available as pre-built wheel files may also help withobtaining other binary extensions without needing to build them locally.

See also

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