How was the package originally installed? If it was via apt, you could just be able to do apt-get remove python-m2crypto

If you installed it via easy_install, I’m pretty sure the only way is to just trash the files under lib, shared, etc..

My recommendation in the future? Use something like pip to install your packages. Furthermore, you could look up into something called virtualenv so your packages are stored on a per-environment basis, rather than solely on root.

With pip, it’s pretty easy:

pip install m2crypto

But you can also install from git, svn, etc repos with the right address. This is all explained in the pip documentation

The best way I’ve found is to run this command from terminal

sudo pip install [package_name] --upgrade

sudo will ask to enter your root password to confirm the action.

Note: Some users may have pip3 installed instead. In that case, use

sudo pip3 install [package_name] --upgrade

1. Via windows command prompt, run: pip list --outdated
   You will get the list of outdated packages.
2. Run: pip install [package] --upgrade
   It will upgrade the [package] and uninstall the previous version.

To update pip:

pip install --upgrade pip

Again, this will uninstall the previous version of pip and will install the latest version of pip.

To automatically upgrade all the outdated packages (that were installed using pip), just run the script bellow,

pip install $(pip list --outdated | awk '{ print $1 }') --upgrade

Here, pip list --outdated will list all the out dated packages and then we pipe it to awk, so it will print only the names.
Then, the $(...) will make it a variable and then, everything is done auto matically. Make sure you have the permissions. (Just put sudo before pip if you’re confused)
I would write a script named, pip-upgrade
The code is bellow,

#!/bin/bash
sudo pip install $(pip list --outdated | awk '{ print $1 }') --upgrade

Then use the following lines of script to prepare it:

sudo chmod +x pip-upgrade
sudo cp pip-upgrade /usr/bin/

Then, just hit pip-upgrade and voila!

Get all the outdated packages and create a batch file with the following
commands
pip install xxx –upgrade for each outdated packages

I think the best one-liner is:

pip install --upgrade <package>==<version>

• Method 1: Upgrade manually one by one

pip install package_name -U

• Method 2: Upgrade all at once (high chance rollback if some package fail to upgrade

pip install $(pip list --outdated --format=columns |tail -n +3|cut -d" " -f1) --upgrade

• Method 3: Upgrade one by one using loop

for i in  $(pip list --outdated --format=columns |tail -n +3|cut -d" " -f1); do pip install $i --upgrade; done

pip install -U $(pip list --outdated | awk 'NR>2 {print $1}')

In Juptyer notebook, a very simple way is

!pip install <package_name> --upgrade

So, you just need to replace with the actual package name.

Open Command prompt or terminal and use below syntax

pip install --upgrade [package]==[specific version or latest version]

For Example

pip install --upgrade numpy==1.19.1

How can I completely uninstall version 0.19.1 from my system before
installing 0.20.2?

In order to uninstall M2Crypto use

pip uninstall M2Crypto

I need to download, build and install the latest version of the
M2Crypto package (0.20.2).

In order to install the latest version, one can use PyPi

pip install M2Crypto 

To install the version 20.2 (an outdated one), run

pip install M2Crypto==0.20.2

Assuming one just wants to upgrade

pip install M2Crypto --upgrade # Or pip install M2Crypto -U

Notes:

• Depending on one’s Python version (here’s how to find the version) one may use a different pip command. Let’s say one is working with Python 3.7, instead of just using pip, one might use pip3.7.

• Using sudo is considered unsafe.

• Nowadays there are better practices to manage the development system, such as: virtual environments or development containers. The development containers allow one to put the entire development environment (be it modules, VS Code extensions, npm libraries,…) inside a Docker container. When the project comes to an end, one closes the container. There’s no need to keep all of those requirements around in the computer for no reason. If you feel like reading more about it: Visual Studio Docs, Github.

I.e.:

python -m pip install --proxy <proxyserver_name>:<port#> <pkg_name> 

Remember to export the variables after setting them, to make them available to the outer shell session.

Windows:

Add to environment variables:

set HTTP_PROXY=<proxyserver_name>:<port#>

You might have to install the full python package first