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Install NumPy, SciPy, Matplotlib with Python 3 on Windows Posted on February 25, 2017 by Paul. Updated 17 February 2019. This is a short tutorial about installing Python 3 with NumPy, SciPy and Matplotlib on Windows.

• Click the Windows link (two lines below the Download Python 3.7.4 button). The following page will appear in your browser. Click on the Download Windows x86-64 executable installer link under the top-left Stable Releases. The following pop-up window titled Opening python-3.74-amd64.exe will appear. Click the Save File button. The file named python-3.7.4-amd64.exe should start downloading into your.
• How to Install Python Packages on Windows 7: For the complete and utter noob (put your new skills to the test over at my simpleTweet01python instructable.) You want to use Python on a Windows 7 machine but you don't know what you're doing.
• Click the Windows link (two lines below the Download Python 3.7.4 button). The following page will appear in your browser. Click on the Download Windows x86-64 executable installer link under the top-left Stable Releases. The following pop-up window titled Opening python-3.74-amd64.exe will appear. Click the Save File button. The file named python-3.7.4-amd64.exe should start downloading into your standard download folder. This file is about 30 Mb so it might take a while to download fully.
• OpenPGP Public Keys. His key id EA5BBD71 was used to sign all other Python 2.6 and 3.0 releases. His key id ED9D77D5 is a v3 key and was used to sign older releases; because it is an old MD5 key and rejected by more recent implementations, ED9D77D5 is no longer included in the public key file.
• If you have Windows 7/8/8.1, you should have no problem downloading and installing Python 3.7.4 To download and install Python latest version on your desktop/laptop, simply go to.

Introduction

Python is a versatile programming language that can be used for many different programming projects. First published in 1991 with a name inspired by the British comedy group Monty Python, the development team wanted to make Python a language that was fun to use. Easy to set up, and written in a relatively straightforward style with immediate feedback on errors, Python is a great choice for beginners and experienced developers alike. Python 3 is the most current version of the language and is considered to be the future of Python.

This tutorial will guide you through installing Python 3 on your local Windows 10 machine and setting up a programming environment via the command line.

Prerequisites

You will need a Windows 10 computer with administrative access that is connected to the internet.

Step 1 — Opening and Configuring PowerShell

We’ll be completing most of our installation and setup on a command-line interface, which is a non-graphical way to interact with your computer. That is, instead of clicking on buttons, you’ll be typing in text and receiving feedback from your computer through text as well. The command line, also known as a shell, can help you modify and automate many of the tasks you do on a computer every day, and is an essential tool for software developers.

PowerShell is a program from Microsoft that provides a command-line shell interface. Administrative tasks are performed by running cmdlets, which are pronounced command-lets My inner fish pdf. , specialized classes of the .NET software framework that can carry out operations. Open-sourced in August 2016, PowerShell is now available across platforms, for both Windows and UNIX systems (including Mac and Linux).

To find Windows PowerShell, you can right-click on the Start menu icon on the lower left-hand corner of your screen. When the menu pops up, you should click on “Search,” then type “PowerShell” into the search bar. When you are presented with options, right-click on “Windows PowerShell,” the Desktop app. For our purposes, we’ll select “Run as Administrator.” When you are prompted with a dialogue box that asks “Do you want to allow this app to make changes to your PC?” click on “Yes.”

Once you do this, you’ll see a text-based interface that has a string of words that looks like this:

We can switch out of the system folder by typing the following command:

Then we’ll be in a directory such as PS C:UsersSammy.

To continue with our installation process, we are going to set up some permissions through PowerShell. Configured to run in the most secure mode by default, there are a few levels of permissions that you can set up as an administrator:

• Restricted is the default execution policy, under this mode you will not be able to run scripts, and PowerShell will work only as an interactive shell.
• AllSigned will enable you to run all scripts and configuration files that are signed by a trusted publisher, meaning that you could potentially open your machine up to the risk of running malicious scripts that happen to be signed by a trusted publisher.
• RemoteSigned will let you run scripts and configuration files downloaded from the internet signed by trusted publishers, again opening your machine up to vulnerabilities if these trusted scripts are actually malicious.
• Unrestricted will run all scripts and configuration files downloaded from the internet as soon as you confirm that you understand that the file was downloaded from the internet. In this case no digital signature is required so you could be opening your machine up to the risk of running unsigned and potentially malicious scripts downloaded from the internet.

We are going to use the RemoteSigned execution policy to set the permission for the current user that allows the PowerShell to accept downloaded scripts that we trust without making the permissions as broad as they would be with an Unrestricted permission. In the PowerShell, let’s type:

PowerShell will then prompt us to provide an execution policy, and since we want to use RemoteSigned, we’ll type:

Once we press enter we’ll be asked if we do want to change the execution policy. Type the letter y for “yes,” and allow the changes to take effect. We can confirm that this worked by asking for the current permissions across the machine by typing:

You should receive output that looks something like this:

This confirms that the current user can run trusted scripts downloaded from the internet. We can now move on to downloading the files we will need to set up our Python programming environment.

Step 2 — Installing the Package Manager Chocolatey

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A package manager is a collection of software tools that work to automate installation processes that include the initial installation, upgrading and configuring of software, and removing software as needed. They keep software installations in a central location and can maintain all software packages on the system in formats that are commonly used.

Chocolatey is a command-line package manager built for Windows that works like apt-get does on Linux. Available in an open-source version, Chocolatey will help you quickly install applications and tools, and we will be using it to download what we need for our development environment.

Before we install the script, let’s read it to confirm that we are happy with the changes it will make to our machine. To do this, we will use the .NET scripting framework to download and display the Chocolatey script within the terminal window. We’ll create a WebClient object called $script (you can call it whatever you want as long as you use $ as the first character), that shares Internet connection settings with Internet Explorer:

Let’s look at the options that we have available to us by piping the object to the Get-Member class to return all members (properties and methods) of this WebClient object:

Looking over the output, we can identify the DownloadString method that we can use to display the script and signature in the PowerShell window. Let’s implement this method:

After we inspect the script, we can install Chocolatey by typing the following into PowerShell:

The cmdlet iwr or Invoke-WebRequest allows us to extract data from the web. This will pass the script to the iex or Invoke-Expression cmdlet, which will execute the contents of the script, running the installation script for the Chocolatey package manager.

Allow PowerShell to install Chocolatey. Once it is fully installed, we can begin installing additional tools with the choco command.

If we need to upgrade Chocolatey at any time in the future, we can run the following command:

With our package manager installed, we can go on to install the rest of what we need for our Python 3 programming environment.

Step 3 — Installing the Text Editor nano (Optional)

We are now going to install nano, a text editor that uses a command line interface, which we can use to write programs directly within PowerShell. This is not a compulsory step, as you can alternatively use a text editor with a graphical user interface such as Notepad, but nano will get us more accustomed to using PowerShell.

Let’s use Chocolatey to install nano:

Here we used the -y flag so that we confirm automatically that we want to run the script without being prompted.

Once nano is installed, we will be able to use the nano command to create new text files and will eventually use it to write our first Python program.

Step 4 — Installing Python 3

Just like we did with nano above, we will use Chocolatey to install Python 3:

PowerShell will now install Python 3, generating output within PowerShell during that process.

Once the process is completed, you should see the following output:

With the installation finished, you’ll want to confirm that Python is installed and ready to go. To see the changes, use the command refreshenv or close and re-open PowerShell as an Administrator, then check the version of Python available to you on your local machine:

You should get output such as:

Alongside Python, pip will be installed, which will manage software packages for Python. Let’s ensure that pip is up-to-date by upgrading it:

With Chocolatey, we can call Python 3 with the python command. We will use the -m flag to run the library module as a script, terminating the option list, and from there use pip to install its upgrade.

Once Python is installed and pip updated, we can set up a virtual environment for our development projects.

Step 5 — Setting Up a Virtual Environment

Now that we have Chocolatey, nano, and Python installed, we can go on to create our programming environment with the venv module.

Virtual environments enable you to have an isolated space on your computer for Python projects, ensuring that each of your projects can have its own set of dependencies that won’t disrupt any of your other projects.

Setting up a programming environment provides us with greater control over our Python projects and over how different versions of packages are handled. This is especially important when working with third-party packages.

You can set up as many Python programming environments as you want. Each environment is basically a directory or folder in your computer that has a few scripts in it to make it act as an environment.

Choose which directory you would like to put your Python programming environments in, or create a new directory with mkdir, as in:

Once you are in the directory where you would like the environments to live, you can create an environment by running the following command:

Using the python command, we will run the venv library module to create the virtual environment that in this case we have called my_env.

Essentially, venv sets up a new directory that contains a few items which we can view with the ls command:

Together, these files work to make sure that your projects are isolated from the broader context of your local machine, so that system files and project files don’t mix. This is good practice for version control and to ensure that each of your projects has access to the particular packages that it needs.

To use this environment, you need to activate it, which you can do by typing the following command that calls the activate script in the Scripts directory:

Your prompt will now be prefixed with the name of your environment, in this case it is called my_env:

This prefix lets us know that the environment my_env is currently active, meaning that when we create programs here they will use only this particular environment’s settings and packages.

Step 6 — Creating a Simple Program

Now that we have our virtual environment set up, let’s create a simple “Hello, World!” program. This will make sure that our environment is working and gives us the opportunity to become more familiar with Python if we aren’t already.

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To do this, we’ll open up nano and create a new file:

Once the text file opens up in Terminal we’ll type out our program:

Exit nano by typing the control and x keys, and when prompted to save the file press y then the enter key.

Once you exit out of nano and return to your shell, let’s run the program:

The hello.py program that you just created should cause Terminal to produce the following output:

To leave the environment, simply type the command deactivate and you will return to your original directory.

Conclusion

Congratulations! At this point you should have a Python 3 programming environment set up on your local Windows 10 machine and can begin a coding project!

To set up Python 3 on another computer, follow the local programming environment guides for Ubuntu 16.04, Debian 8, CentOS 7, or macOS. You can also read about installing Python and setting up a programming environment on an Ubuntu 16.04 server, which is especially useful when working on development teams.

With your local machine ready for software development, you can continue to learn more about coding in Python by following “Understanding Data Types in Python 3” and “How To Use Variables in Python 3”.

I download the get-pip.py from https://pip.pypa.io/en/stable/installing/ . Then i changed path in: system-variable environment into : C:Python27ArcGIS10.3Libsite-packagesafter that i tried to run in from the cmd and this is the result:

8 Answers

For New versions

Older versions of python may not have pip installed and get-pip will throw errors. Please update your python (2.7.15 as of Aug 12, 2018).

All current versions have an option to install pip and add it to the path.

Steps:

1. Open Powershell as admin. (win+x then a)
2. Type python -m pip install <package>.

If python is not in PATH, it'll throw an error saying unrecognized cmd. To fix, simply add it to the path as mentioned below.

[OLD Answer]

Python 2.7 must be having pip pre-installed.

Try installing your package by:

1. Open cmd as admin. (win+x then a)
2. Go to scripts folder: C:Python27Scripts
3. Type pip install 'package name'.

Note: Else reinstall python: https://www.python.org/downloads/

Also note: You must be in C:Python27Scripts in order to use pip command, Else add it to your path by typing:[Environment]::SetEnvironmentVariable('Path','$env:Path;C:Python27;C:Python27Scripts', 'User')

Ganesh KGanesh K

Download pip script from https://bootstrap.pypa.io/get-pip.py and then run using python as:-

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or you can use python to install modules directly

This is one way of installing pip on a Windows system.

1. Download the 'get-pip' python script from here: https://bootstrap.pypa.io/get-pip.py

2. Save the file as getpip.py

3. Run it from cmd: python getpip.py install

EricaShashaank SivakumarShashaank Sivakumar

It is possible that in python 2.7 pip is installed by default. if it is not then you can execute

python -m ensurepip --default-pip

This worked for me.

Source: https://docs.python.org/2/installing/

Add the following to you environment variable PATH.

This path will contain the pip executable file. Make sure it exist. If it doesn't then you'll need to install it using the get-pip.py script.

Additonally, you can read the following link to get a better understanding.

JRodDynamiteJRodDynamite

pip is installed by default when we install Python in windows.After setting up the environment variables path for python executables, we can run python interpreter from the command line on windows CMDAfter that, we can directly use the python command with pip option to install further packages as following:-

This will install the module using pip.

Rohit Poudelnandalnandal

you have to first download the get-pip.py and then run the command :

python get-pip.py

I've seen this issue before with 2.7.14. Fixed it by :

1. Re-install python 2.7.14
2. During the installation, select default path and put a check mark in the installation options to add python to windows path i.e. environmental variables.
3. After installation is complete, go to System from the Control Panel, select Advanced system settings, and clicking Environment Variables.
4. Verify that the system variable 'path' has 'C:Python;C:PythonScripts;' added to the list.

5. In cmd, run 'where python' and then 'where pip'. Which will show for example:

6. Run pip, then it should show different pip run command options.

Installing Python On Windows 7 Windows 10

Erica

Python For Windows 7

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