how to update version of python?

4. When the installation finishes, check whether the new version of Python has been installed successfully. Open Windows PowerShell and type:

python3--version

Install Python in the macOS terminal using the Homebrew package manager. If you do not have Homebrew, install it by typing the following script in the terminal:

/bin/bash - c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"

1. Update Homebrew by running:

brew update

If you already have a version of Python 3 installed, upgrade the package with the brew upgrade command:

brew upgrade python3

5. Finally, confirm that the new Python version has been successfully installed by typing the following in terminal:

python3--version

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Last Updated : 31 Aug, 2021,GATE CS 2021 Syllabus

To check the current version of python on your system, use the following command in the command prompt:

python - V

Now if you open up your cmd and use the below command:

python - V

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$ python3--version

python 3.6 .8

$ sudo apt update - y
$ sudo apt install python3 .7

$ sudo update - alternatives--install / usr / bin / python3 python3 / usr / bin / python3 .6 1
$ sudo update - alternatives--install / usr / bin / python3 python3 / usr / bin / python3 .7 2

$ sudo update - alternatives--config python3

user@ubuntu1804:~$ sudo update-alternatives --config python3
There are 2 choices for the alternative python3 (providing /usr/bin/python3).

Selection Path Priority Status
------------------------------------------------------------
* 0 /usr/bin/python3.6 2 auto mode
1 /usr/bin/python3.6 1 manual mode
2 /usr/bin/python3.7 2 manual mode

Press <enter> to keep the current choice[*], or type selection number: