I'm running Ubuntu 9:10 and a package called M2Crypto is installed (version is 0.19.1). I need to download, build and install the latest version of the M2Crypto package (0.20.2).
The 0.19.1 package has files in a number of locations including (/usr/share/pyshared and /usr/lib/pymodules.python2.6).
How can I completely uninstall version 0.19.1 from my system before installing 0.20.2?
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
You might want to look into a Python package manager like pip. If you don't want to use a Python package manager, you should be able to download M2Crypto and build/compile/install over the old installation.
To automatically upgrade all the outdated packages (that were installed using pip), just run the script bellow,
pip install $(pip list --outdated | awk '{ print $1 }') --upgrade
Here, pip list --outdated will list all the out dated packages and then we pipe it to awk, so it will print only the names.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sudo pip install $(pip list --outdated | awk '{ print $1 }') --upgrade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!
Via windows command prompt, run: pip list --outdated
You will get the list of outdated packages.
Run: pip install [package] --upgrade
It will upgrade the [package] and uninstall the previous version.
To update pip:
py -m pip install --upgrade pip
Again, this will uninstall the previous version of pip and will install the latest version of pip.
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pip install $(pip list --outdated --format=columns |tail -n +3|cut -d" " -f1) --upgrade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for i in $(pip list --outdated --format=columns |tail -n +3|cut -d" " -f1); do pip install $i --upgrade; done
I think the best one-liner is:
pip install --upgrade <package>==<version>
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 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
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.
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.
Get all the outdated packages and create a batch file with the following
commands
pip install xxx --upgrade for each outdated packages
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
Related
how to uninstall pycrypto?
I got an error "ModuleNotFoundError: No module named 'Crypto' so I searched on Stack Overflow and someone said
"WARNING: Don't use pycrypto anymore!
Use pycryptodome instead, via pip3 install pycryptodome.
But make sure that you don't have pycrypto installed, because both packages install under the same folder Crypto."
So I'm looking to uninstall pycrypto
use pip list or conda list to see your installed packages.
From their you should be able to see the correct name of the package.
Afterwards you can use pip / conda uninstall *packagename*.
You can use the following commands to uninstall pycrypto:
pip freeze | grep pycrypto
# copy the output say, pycrypto==2.6.1 and run uninstall command.
pip uninstall pycrypto==2.6.1
Note: pip freeze will list all the installed python packages and grep will narrow it down to only pycrypto package
You can go in your python site-packages folder (or wherever your packages are installed) and simply delete them. pip uninstall should work too.
you can easily uninstall every pip package by using
python3 -m pip uninstall <package name>
or if pip shortcut is setup (most commonly)
pip uninstall <package name>
to get a package name you can run
pip list |grep <some filter>
the <some filter> is a query you want to search e.g. crypto
for your package it should be
pip uninstall pycrypto
I am having some problems with pip when trying to install a python application.
It says its not able to find pip3, but its installed
Digging deeper I think I have locations where pip3 is installed.
While trying to uninstall, even that is not working since it referring to the other pip3
How to I go about keeping only one copy of pip3 and uninstall one copy of it
$which pip3
/home/frappeuser/.local/bin/pip3
$ sudo pip3 uninstall pip
sudo: unable to execute /usr/local/bin/pip3: No such file or directory
You can unninstall it using python in cmd using the following:
python3 -m pip uninstall pip
In case you are using python 2.0
python -m pip uninstall pip
python - refers to the python version that you are working with
-m - refers to the option module
pip - specifies the module name that you want to use
uninstall - the operation you want to do
pip - the module that you want to uninstall
/local/ means you have it installed not via package manager, so to uninstall it you have to provide the full path:
sudo /home/frappeuser/.local/bin/pip3 uninstall pip
I am trying to run a webpage using python flask and connecting it with the database of MySQL and while installing MySQL packages I'm receiving this error.
I'm doing this on ec2 Linux AWS.
TL;DR
The 'ideal' solution (Ubuntu/Debian way):
$ python -m pip uninstall pip to uninstall the new pip 10 and retain your Ubuntu/Debian-provided patched pip 8. For a system-wide installation of modules use apt wherever possible (unless you are in a virtualenv), more on it below. In older Ubuntu/Debian versions, always add --user flag when using pip outside of virtualenvs (installs into ~/.local/, default in python-pip and python3-pip since 2016).
If you still want to use the new pip 10 exclusively, there are 3 quick workarounds:
simply re-open a new bash session (a new terminal tab, or type bash) - and pip 10 becomes available (see pip -V). debian's pip 8 remains installed but is broken; or
$ hash -d pip && pip -V to refresh pip pathname in the $PATH. debian's pip 8 remains installed but is broken; or
$ sudo apt remove python-pip && hash -d pip (for Python 3 it's python3-pip) -- to uninstall debian's pip 8 completely, in favor of your new pip 10.
Note: You will always need to add --user flag to non-debian-provided pip 10, unless you are in a virtualenv! Your use of pip 10 system-wide, outside of virtualenv, is not really supported by Ubuntu/Debian. Never sudo pip!
Details:
https://github.com/pypa/pip/issues/5221#issuecomment-382069604
https://github.com/pypa/pip/issues/5240#issuecomment-381673100
So, here we have Python 2.7.12 in Ubuntu 16.04 ec2 machine, and get ImportError: cannot import name main when trying to use pip. It's caused by the pip install --upgrade pip command: that installs the latest pip version 10 alongside Ubuntu's default pip version from python-pip debian package from OS distribution (the system Python installation), completely bypassing Ubuntu apt subsystem. It breaks the Ubuntu's default pip: the debian-patched launcher script from python-pip (system-installed to /usr/bin/pip*) tries to do import main() from your newly installed pip 10 library, but with a different import path, so it fails.
This error is discussed in more detail in a developer thread of the pip issue tracker, including a few proposed solutions, such as:
The $ hash -d pip command: when hash is invoked, the full pathname of pip is determined by searching the directories in $PATH and remembered. Any previously-remembered pathname is discarded. The -d option causes the shell to "forget" the remembered location of the given package name; or
Similarly, you can simply re-open a new bash session (a new terminal tab) to refresh pip pathname in $PATH; or
You could just use a versioned pip2 command (or pip3 for Python 3) instead of pip to invoke the older system-installed launcher /usr/bin/pip2 , whereas any pip script located in $HOME/.local/bin dir (pip, pip2, pip2.7) will invoke your new user-installed pip 10 version;
You can also use the versioned Python commands in combination with the -m switch to run the appropriate copy of pip, for example:
$ python2 -m pip install --user SomePackage # default Python 2
$ python2.7 -m pip install --user SomePackage # specifically Python 2.7
That is handy if you have several versions of Python and need an extension from PyPI, such as your MySQL-python module (MySQLdb) or a Flask-MySQL, for a specific Python version. The --user switch is only required outside of virtualenv.
Or, uninstall one of the two pips – either user-installed or system-installed – to resolve the conflict:
$ python -m pip uninstall pip – to remove your manually-installed pip in favour of the previously installed Ubuntu-shipped version from python-pip debian package (python3-pip for Python 3); it is slightly older, but it finds and installs latest modules from PyPI just fine, and has a working pip command in the $PATH by default; or
$ sudo apt-get remove python-pip – to uninstall Ubuntu-provided pip in favour of your latest pip 10; if it is not accessible via the short pip command, just add your $HOME/.local/bin directory to your $PATH environment variable to use pip command (see above).
Note: Ubuntu 16.04 pip v8.1.1 and the latest pip v10.0.1 produce exactly the same PyPI index search results and can pull the same module versions;
Finally, you could ignore both pips altogether in favor of APT, and install Python packages system-wide from Ubuntu repo with:
$ apt search <python-package> # or apt-cache search in older Ubuntu
$ apt show <python-package> # e.g. python-flask
$ sudo apt install <python-package> # or sudo apt-get install
Packages prefixed with python- are for Python 2; with python3- are for Python 3.
Standard apt-get installation method may be what you need. For example, in your case:
python-mysqldb - Python interface to MySQL <- a fork of MySQLdb == MySQL-python
python-flask-sqlalchemy - SQL Alchemy support
python-pymysql - pure Python MySQL driver
In fact, python-packages from Ubuntu repository are preferred whenever possible, particularly in case of heavy system dependencies or when used system-wide.
Of course, the amount of Python packages in Ubuntu repository (few thousand!) is relatively smaller compared to PyPI (and have only one version of them), because any OS repository is lagging slightly behind PyPI versions. But the upside of APT is that all the Ubuntu-provided packages underwent integration testing within Ubuntu, plus apt-get quickly resolves heavy dependencies like C extensions automatically. You will always get the system libraries you need as part of the apt install, but with pip you have no such guarantees.
APT may not be an option, however, if you really need only the latest (or certain older) package version, or when it can only be found at PyPI, or when modules need to be isolated; then pip is indeed more appropriate tool. If you have to use pip install command on Ubuntu instead of apt-get install, please ensure it runs in an isolated virtual development environment, such as with virtualenv (sudo apt-get install python-virtualenv), or using a built-in venv module (available in python3 only), or at a per-user level (pip install --user command option), but not system-wide (never sudo pip!).
Note: Using sudo pip command (with root access) on Ubuntu/Debian should be avoided, because it interferes with the operation of the system package manager (apt) and may affect Ubuntu OS components when a system-used python module is unexpectedly upgraded, particularly by dependencies on another pip package. It is advised to never use Pip to change system-wide Python packages, as these are managed by apt-get on Ubuntu.
These steps worked for me.
1- Uninstall the pip update from python.
2- Uninstall pip package from your Ubuntu.
3- Check that pip binary is not longer in your system.
python -m pip uninstall pip
apt remove python-pip
whereis pip
4- Download and install pip. (credits for VanDragt.com)
wget https://bootstrap.pypa.io/get-pip.py -O /tmp/get-pip.py
sudo python3 /tmp/get-pip.py
pip install --user pipenv
pip3 install --user pipenv
echo "PATH=$HOME/.local/bin:$PATH" >> ~/.profile
source ~/.profile
whereis pip
Now you should be able to install any pip package you want.
My cent, I had the same ImportError: cannot import name main.
My system is a Linux Ubuntu distro, I have executed this command:
python -m pip uninstall pip
This has removed one local (for the user) pip version.
I had already an older pip/pip2 system executable (apt-get installed in ancient times) that worked like a charm.
As suggested in pip's github issue
The temporary fix is -
Edit your /usr/bin/pip file and comment the line importing main and edit it
#from pip import main
from pip._internal import main as main
Worked perfectly for me.
Note - this is a temporary fix. Wait for team pip to fix this.
OR
from pip import main
if __name__ == '__main__':
sys.exit(main())
to this:
from pip import __main__
if __name__ == '__main__':
sys.exit(__main__._main())
As suggested in this SO answer.
Try this
Check the python version you use
# Python --version
and try installing for eg if your version is 2.7
#python2.7 <package name>
Will work fine......
I have faced the similar issue after pip 19 upgrade. So I did the following to fix the problem.
pip install --upgrade pip==9.0.3
instead of
pip install -U pip
I'm looking for a method to use pip or similiar to install a list of python packages to a custom target directory (ex./mypath/python/pkgs/ ), but also exclude/blacklist specific dependencies.
I want to exclude specific dependencies since they are already met from a different install path (e.g. an anaconda install). I don't have the privilege of adding packages to the default python installation (nor do I want to).
I'm currently use the -r and -t options of pip. But have not found a way to exclude specific packages.
A pip command like this is would be ideal:
pip install --log pip.log -r req.txt -t /mypath/pypkgs/ --exclude exclude.txt
--no-deps is not an option since I need some of the dependencies.
I'm currently pursuing a python script to do pip installs that include dependencies I don't need via:
pip install --log pip.log -r req.txt -t /mypath/python/pkgs/
and then (automatically) remove the unneeded dependencies after the pip install finishes.
I hoping some combination of pip commands can achieve what I'm looking for some straightforward away. I'm using pip 7.1.2. Thanks!
Similar, yet I'm not upgrading and want to specify a target path:
pip: upgrade package without upgrading particular dependency
Faced with a similar problem, and using a running bash shell I managed to exclude specific packages with
pip install $(grep -ivE "pkg1|pkg2|pkg3" requirements.txt)
where pkg1 and so on are the names of the packages to exclude.
I think this essentially can be achieved in several steps, assuming you're using virtualenv or similar...
If you first do a normal pip freeze > requirements.txt you'll get all of the transitive dependencies (e.g. not excluding anything.)
Now edit requirements.txt, remove the packages you want to exclude...
Finally, in a new environment do pip install -r requirements.txt -t ... --no-deps. Voila: you've installed the dependencies you wanted while excluding specific ones.
You can use pip install --no-deps with pip check to exclude specific packages.
A real example of mine is when I installed paddleocr on Jetson Nano, pip kept installing python-opencv for me, which has already installed by myself without using pip, but pip cannot detect it. To stop pip installing python-opencv for me, here are the steps
use pip install --no-deps paddleocr to install paddleocr without its dependencies
use pip check to list unresolved dependencies, reformat the output so that it can be read by pip install -r, then remove the packages you don't want to install (it is python-opencv in my case), and save it to a file named fix-deps.txt
use pip install --no-deps -r fix-deps.txt to install unresolved dependencies
repeat steps 2 and 3 until the output of pip check only contains the packages you don't want to install.
pip install --no-deps and pip check are very useful commands that allow you to resolve the dependencies by yourself when pip cannot do it right for you. The shortcoming of this solution is the output of pip check is designed for humans, it cannot be used by pip install -r directly, so you have to reformat the output manually or use the awk command.
PR and issue have been created for the pip community to make the output of pip check suitable for the pip install to read, but for some reason, they don't think it is a good idea. so I guess this is the best we can do now.
Refs:
https://github.com/pypa/pip/pull/10108
https://github.com/pypa/pip/issues/10066#issuecomment-872638361
An approach that takes into account sub-dependencies is to first install the exclude.txt environment, then the req.txt environment, then check the diff and finally install that into the target directory.
Example using virtualenv that will work on GNU/Linux:
virtualenv tmpenv
source tmpenv/bin/activate
pip install -r exclude.txt
pip freeze > exclude-with-deps.txt
pip install -r req.txt
pip freeze > req-with-deps.txt
comm -13 exclude-with-deps.txt req-with-deps.txt > final-req.txt
pip install -r final-req.txt --no-deps -t pypkgs
Quick Answer:
pip freeze | grep -vFxf pip_ignore.txt > requirements.txt
Will ignore whatever you save in pip_ignore.txt
This is good if you already know what you're going to ignore. However if you're about to install something that you know you'll want to ignore, you're going to want to be able to handle things a bit more easily. In that scenario what I do is pip freeze > before.txt then I install whatever packages it is, and then pip freeze | grep -vFxf before.txt > new_stuff_to_ignore.txt. You now have a list of the stuff you just installed. You can add it to your pip_ignore.txt and then finally do pip freeze | grep -vFxf pip_ignore.txt > requirements.txt
Be mindfudl that some packages in your requirements may share dependencies with packages you want to ignore. These dependencies might end up in your pip_ignore.txt.
I have ubuntu 11.10. I apt-get installed pypy from this launchpad repository: https://launchpad.net/~pypy the computer already has python on it, and python has its own pip. How can I install pip for pypy and how can I use it differently from that of python?
Quoting (with minor changes) from here the pypy website:
If you want to install 3rd party libraries, the most convenient way is
to install pip:
$ curl -O https://bootstrap.pypa.io/get-pip.py
$ ./pypy-2.1/bin/pypy get-pip.py
$ ./pypy-2.1/bin/pip install pygments # for example
In order to use it nicely, you might want to add an alias into e.g. ~/.bashrc:
alias pypy_pip='./pypy-2.1/bin/pip'
Where the actual pip executable is located has to be taken from the output of pypy get-pip.py
To keep a separate installation, you might want to create a virtualenv for PyPy. Within the virtualenv, you can then just run pip install whatever and it will install it for PyPy. When you create a virtualenv, it automatically installs pip for you.
Otherwise, you will need to work out where PyPy will import from and install distribute and pip in one of those locations. pip's installer should do this automatically when run with PyPy. Be careful with this option - if it decides to install in your system Python directories, it could break other things.
if you want to use pip with pypy:
pypy -m pip install [package]
pip is included with pypy so just target pip with the -m flag
The problem with pip installing from the pypy (at least when installing pypy via apt-get) is that it is installed into the system path:
$ whereis pip
pip: /usr/local/bin/pip /usr/bin/pip
So after such install, pypy pip is executed by default (/usr/local/bin/pip) instead of the python pip (/usr/bin/pip) which may break subsequent updates of the whole Ubuntu.
The problem with virtualenv is that you should remember where and what env you created.
Convenient alternative solution is conda (miniconda), which manages not only python deployments: http://conda.pydata.org/miniconda.html.
Comparison of conda, pip and virtualenv:
http://conda.pydata.org/docs/_downloads/conda-pip-virtualenv-translator.html