Install Python and Create local environment

Python Installation

Install Python and Create local environment
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Some basic Commands to note i your memory

check selenium is installed or not.
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$ python3 -c "import selenium; print(selenium.__version__)"


Also to check the selenium installed or not 
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$ python3
>>> import selenium
>>> help (selenium)


To check the brew is installed or not
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brew list


To check the pip is installed or not
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pip list



For installing python3 and setup local programing environment in local.
https://www.digitalocean.com/community/tutorials/how-to-install-python-3-and-set-up-a-local-programming-environment-on-macos


To check xcode is installed or not
xcode-select -p

then we will get 
/Library/Developer/CommandLineTools


To install Home brew package manager
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

To check home brew installed or not
brew doctor

Then you will get success message as given below.
Your system is ready to brew.

The below command will search list of python available.
brew search python

Then you can install python 3 from there.
brew install python3


Along with Python 3, Homebrew will install pip, setuptools and wheel.

we will use pip to install and manage programming packages we may want to use in our development projects
pip3 install package_name

To check python is ready to use, use this command
python3 --version

To update your version of Python 3, you can first update Homebrew and then update Python:
brew update
brew upgrade python3



To create virtual environment
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Create new directoty and move to this directory
mkdir Environments
cd Environments


Create a virtual environment in that directory
python3.7 -m venv my_env


activate the virtual directory
source my_env/bin/activate


Now you will get the virtual environment with python steup. Now you can run your program.
Then run the python program:

python hello.py