Develop Reference

How to prevent pip install the latest version package if the package has installed [duplicate]

Is there any way to force install a pip python package ignoring all it's dependencies that cannot be satisfied?
(I don't care how "wrong" it is to do so, I just need to do it, any logic and reasoning aside...)

pip has a --no-dependencies switch. You should use that.
For more information, run pip install -h, where you'll see this line:
--no-deps, --no-dependencies
Ignore package dependencies

Try the following:
pip install --no-deps <LIB_NAME>
or
pip install --no-dependencies <LIB_NAME>
or
pip install --no-deps -r requirements.txt
or
pip install --no-dependencies -r requirements.txt

When I was trying install librosa package with pip (pip install librosa), this error appeared:
ERROR: Cannot uninstall 'llvmlite'. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.
I tried to remove llvmlite, but pip uninstall could not remove it. So, I used capability of ignore of pip by this code:
pip install librosa --ignore-installed llvmlite
Indeed, you can use this rule for ignoring a package you don't want to consider:
pip install {package you want to install} --ignore-installed {installed package you don't want to consider}

I'm unable to install some specific libraries via pip install

I've been trying to install the gym library via pip install gym
I get the following error
WARNING: Discarding https://files.pythonhosted.org/packages/87/86/3f5467531428b6ce6f3c12d3121b4304d2ea1536a50775a4df036add37b8/gym-0.23.1.tar.gz#sha256=d0f9b9da34edbdace421c9442fc9205d03b8d15d0fb451053c766cde706d40e0 (from https://pypi.org/simple/gym/) (requires-python:>=3.7). Requested gym==0.23.1 from https://files.pythonhosted.org/packages/87/86/3f5467531428b6ce6f3c12d3121b4304d2ea1536a50775a4df036add37b8/gym-0.23.1.tar.gz#sha256=d0f9b9da34edbdace421c9442fc9205d03b8d15d0fb451053c766cde706d40e0 has inconsistent version: filename has '0.23.1', but metadata has '0.23.1'
ERROR: Could not find a version that satisfies the requirement gym==0.23.1
ERROR: No matching distribution found for gym==0.23.1
pip then defaults to trying to install previous versions 0.23.0, 0.22.0 and so on.
I get the following warning for all versions and none installs.
request gym from <link> has inconsistent version: filename has '0.9.0', but metadata has '0.9.0'
After some Googling for similar errors, I tried updating pip python3 -m pip install --upgrade pip setuptools wheel
but I get the same problem with version mismatch, and it tries to install old versions of pip and fails.
I'm on Python 3.10.4 and pip 21.0 under Arch Linux.
edit: The same problem happens to any package I try to install with pip.

I found a solution here.
The problem seems to be caused by the python-pip package under Arch Linux.
One possible way to fix it:
sudo pacman -Rncs python-pip
python -m ensurepip

If you cannot figure out pip use git
git clone https://github.com/openai/gym
cd gym
pip install -e .

Try to install with an upgrade option to install the latest without cache since looks that the latest version is stable:
pip install gym -U --no-cache-dir
-U, --upgrade Upgrade all packages to the newest available version
--no-cache-dir Disable the cache
If this won't help you can try to install using legacy version resolver (as per https://github.com/pypa/pip/issues/9203):
pip install gym -U --no-cache-dir --use-deprecated=legacy-resolver

How do I solve "incompatible numba" error while installing Scanpy?

I tried installing the Scanpy package on Jupyter with "pip install Scanpy" but I got the the errors below;
ERROR: pynndescent 0.5.2 has requirement numba>=0.51.2, but you'll have numba 0.48.0 which is incompatible. ERROR: umap-learn 0.5.1 has requirement numba>=0.49, but you'll have numba 0.48.0 which is incompatible
When I tried to separately install an upgraded version of numba, I got the error below;
ERROR: Cannot uninstall 'llvmlite'. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.

Run pip install --upgrade numba
Run pip install scanpy

you can try install with pip install -c numba numba=0.51.2.1rc1 if it doesn't work for you alternativly install RUN pip install llvmlite --ignore installed before pip install numba.
HAVE A GOOD DAY:)

ERROR: Could not build wheels for cryptography which use PEP 517 and cannot be installed directly

I get an error when pip builds wheels for the cryptography package.
Error:
LINK : fatal error LNK1181: cannot open input file 'libssl.lib'
error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2017\\BuildTools\\VC\\Tools\\MSVC\\14.16.27023\\bin\\HostX86\\x86\\link.exe' failed with exit status 1181
----------------------------------------
ERROR: Failed building wheel for cryptography
Running setup.py clean for cryptography
Failed to build cryptography
ERROR: Could not build wheels for cryptography which use PEP 517 and cannot be installed directly
I have already installed OpenSSL and set the environment variables as suggested in this post yet the problem persists. My setup details:
System - Windows 10
Python - 3.8
Pip - 19.3.1

In my case (windows 10 + conda) updating pip fixed the problem:
python -m pip install --upgrade pip

Setting cryptography to version 2.8 in requirements.txt fixed the issue.

TLDR;
Try using cryptography==3.1.1
Details:
This happened on Python 3.9.0 on Windows 10 PC.
I had the following in requirements.txt
cryptography==2.8
I removed the version and kept only cryptography in requirements.txt file like below
cryptography
Saved the requirements.txt and then I ran
pip install -r requirements.txt
It installed successfully.
Then I freeze the requirements.txt by running the following command
pip freeze > requirements.txt
Then the requirements.txt got updated with cryptography==3.1.1

Had also this issue. If you're using alpine, make sure that all dependencies for cryptography are installed.
In my case the cargo package was missing and causing the issue.
sudo apk add gcc musl-dev python3-dev libffi-dev openssl-dev cargo
https://cryptography.io/en/latest/installation.html#building-cryptography-on-linux

Ran into this issue, and the solution is actually in the message when pip attempts to install openssl before cryptography:
generating cffi module 'build/temp.linux-x86_64-3.7/_openssl.c'
running build_rust
=============================DEBUG ASSISTANCE=============================
If you are seeing a compilation error please try the following steps to
successfully install cryptography:
1) Upgrade to the latest pip and try again. This will fix errors for most
users. See: https://pip.pypa.io/en/stable/installing/#upgrading-pip
2) Read https://cryptography.io/en/latest/installation.html for specific
instructions for your platform.
3) Check our frequently asked questions for more information:
https://cryptography.io/en/latest/faq.html
4) Ensure you have a recent Rust toolchain installed:
https://cryptography.io/en/latest/installation.html#rust
5) If you are experiencing issues with Rust for *this release only* you may
set the environment variable `CRYPTOGRAPHY_DONT_BUILD_RUST=1`.
=============================DEBUG ASSISTANCE=============================
Simply running the pip update command appeared to work for me:
pip install -U pip
Which updated pip from version 18.0 to version 21.0.1

I faced this issue on macOS Monterey (version 12.2.1) Apple M1 Pro. I followed Cryptography installation documentation and it helped me resolve the issue.
brew install openssl#1.1 rust
env CRYPTOGRAPHY_SUPPRESS_LINK_FLAGS=1 LDFLAGS="$(brew --prefix openssl#1.1)/lib/libssl.a $(brew --prefix openssl#1.1)/lib/libcrypto.a" CFLAGS="-I$(brew --prefix openssl#1.1)/include" pip3 install cryptography

You can use the lastest version with
python3 -m pip install --no-use-pep517 cryptography
worked for me with ubuntu:18.04 on arm32v7
(instead as suggested by the error message install the full rust compiler and build-essentials, or upgrading pip (what had no effect on ubuntu:18.04 on my armbian))

pip install --upgrade pip
Try to upgrade pip of your environment working fine for me.

I got this error trying to install Scrapy with Python 3.8.1 on Windows 10, but its solved installing the last version of pip (19.3.1 in my case) and all works using pip in this way:
python -m pip install scrapy --user

I have faced same issue and tried to install openssl with mentioned step but still was not able to proceed for windows 10. Later I upgraded pip to latest version and tried again and it worked without any issue.
I would recommend to upgrade pip to latest version and give a try before proceeding for installing openssl

I had the same issue. pip3 version was 19.* after upgrade it works
sudo -H pip3 install --upgrade pip

You can try to install cryptography==3.1.1 package instead of cryptography 35 version.
pip install cryptography==3.1.1
If still you are facing challenges in cryptography package integration.
You can resolve that by the following steps.
python -m pip install --upgrade pip
sudo pip install -U pip setuptools

I had this problem and i just installed rust and problem fixed for me
You can install end version of cryptography after installing rust programming languege(dont try pip install rust, its not python package)
https://www.rust-lang.org/tools/install

Just updating pip
python -m pip install --upgrade pip

I did not install the latest version of Scrapy, then it worked for me. Instead of installing version 2.6.3, I installed 2.6.2:
pip install Scrapy==2.6.2
I use PyCharm 2022.2.3 (Professional Edition) on Windows.

Problem when installing google-cloud-speech python API in raspberry pi 3 (Jessie) via pip

I'm trying to install the google-cloud-speech python API for raspberry pi 3 (raspbian Jessie) using pip (1.5.6). I follow the instructions given by:
https://cloud.google.com/speech-to-text/docs/reference/libraries?authuser=1#client-libraries-install-python
but when installing the library using pip:
pip install --upgrade google-cloud-speech
I get this error:
error in grpcio setup command: 'install_requires' must be a string or list of strings containing valid project/version requirement specifiers
and the installation doesn't finish. The same job worked for me some months ago, so I guess some changes was made. Any ideas?
I've already tried upgrading pip

Start with upgrading installation tools:
pip install --upgrade setuptools pip

Upgrade your setup tools/ pip
pip install setuptools -U

Thank you all! now it is working. I'm pretty sure I tried before one of:
pip install --upgrade setuptools pip
pip install setuptools -U
But the thing is that executing both of them the installation finished correctly.