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cannot install python3-libnvinfer on ubuntu

Hi I want to install python3-libnvinfer and python3-libnvinfer-dev package on Ubuntu20.04 with python3.8
my goal is install TensorRT-8 on ubuntu 20.04
I do the exact installaion steps on nvidia site.
bu when I try this command:
sudo apt-get install python3-libnvinfer
I'll get this Error:
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
python3-libnvinfer : Depends: python3 (< 3.7) but 3.8.2-0ubuntu2 is to be installed
E: Unable to correct problems, you have held broken packages.
I also try this with Python3.7 and don't fix...
I Can't Install Python3.10 because seems not compatible with Ubuntu 20.04.
I tried installing TensorRT on Ubuntu 20.04 and I expect it to install correctly with python 3.8 and also with Python3.7
I Try:
sudo apt-get install python3-libnvinfer-dev
and
sudo apt-get install python3-libnvinvfer
but I ran into an Error described above.

What has happened to python-serial?

I have had replace an old PI2B, Jessie, Python 2.7, which satisfactorily ran some python code, with PI3B, Buster, Python 3.7, but I now cannot find/load python-serial. 'sudo apt-get install python-serial' installs it but when my python code is run it reports it as missing and 'sudo pip install python-serial' can't install it and comes back with the error below. Has it been replaced/superseded? What can I do to enable 'import serial' to work? Thanks
Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
Collecting python-serial
Could not install packages due to an EnvironmentError: 404 Client Error: Not Found for url: https://pypi.org/simple/python-serial/"
Blockquote

Python 2's python-serial is Python 3's python3-serial (note the python3) It can be installed from buster repositories as of this post.
It can also be installed from pip here:
pip3 install pyserial
If pip is not available on the machine then it can be installed from source:
https://github.com/pyserial/pyserial/releases
Download the archive, extract it and install it with:
python setup.py install

I'm trying to download pygame but it keeps coming up with the same error (error: command 'gcc' failed with exit status 1)? [duplicate]

I wanted to install eventlet on my system in order to have "Herd" for software deployment.. but the terminal is showing a gcc error:
root#agrover-OptiPlex-780:~# easy_install -U eventlet
Searching for eventlet
Reading http://pypi.python.org/simple/eventlet/
Reading http://wiki.secondlife.com/wiki/Eventlet
Reading http://eventlet.net
Best match: eventlet 0.9.16
Processing eventlet-0.9.16-py2.7.egg
eventlet 0.9.16 is already the active version in easy-install.pth
Using /usr/local/lib/python2.7/dist-packages/eventlet-0.9.16-py2.7.egg
Processing dependencies for eventlet
Searching for greenlet>=0.3
Reading http://pypi.python.org/simple/greenlet/
Reading https://github.com/python-greenlet/greenlet
Reading http://bitbucket.org/ambroff/greenlet
Best match: greenlet 0.3.4
Downloading http://pypi.python.org/packages/source/g/greenlet/greenlet- 0.3.4.zip#md5=530a69acebbb0d66eb5abd83523d8272
Processing greenlet-0.3.4.zip
Writing /tmp/easy_install-_aeHYm/greenlet-0.3.4/setup.cfg
Running greenlet-0.3.4/setup.py -q bdist_egg --dist-dir /tmp/easy_install-_aeHYm/greenlet-0.3.4/egg-dist-tmp-t9_gbW
In file included from greenlet.c:5:0:
greenlet.h:8:20: fatal error: Python.h: No such file or directory
compilation terminated.
error: Setup script exited with error: command 'gcc' failed with exit status 1`
Why can't Python.h be found?

Your install is failing because you don't have the python development headers installed. You can do this through apt on ubuntu/debian with:
sudo apt-get install python-dev
for python3 use:
sudo apt-get install python3-dev
For eventlet you might also need the libevent libraries installed so if you get an error talking about that you can install libevent with:
sudo apt-get install libevent-dev

For Fedora:
sudo yum install python-devel
sudo yum install libevent-devel
and finally:
sudo easy_install gevent

What worked for me on CentOS was:
sudo yum -y install gcc
sudo yum install python-devel

For Redhat Versions(Centos 7) Use the below command to install Python Development Package
Python 2.7
sudo yum install python-dev
Python 3.4
sudo yum install python34-devel
Python 3.6
sudo yum install python36-devel
If the issue is still not resolved then try installing the below packages -
sudo yum install python-devel
sudo yum install openssl-devel
sudo yum install libffi-devel

On MacOS I had trouble installing fbprophet which requires pystan which requires gcc to compile. I would consistently get the same error: command 'gcc' failed with exit status 1
I think I fixed the problem for myself thus:
I used brew install gcc to install the newest version, which ended up being gcc-8
Then I made sure that when gcc ran it would use gcc-8 instead.
It either worked because I added alias gcc='gcc-8 in my .zshrc (same as .bashrc but for zsh), or because I ran export PATH=/usr/local/bin:$PATH (see comment)
Also: all my attempts were inside a virtual environment and I only succeeded by installing fbprophet globally (with pip), but still no success inside a venv

This is an old post but I just run to the same problem on AWS EC2 installing regex. This working perfectly for me
sudo yum -y install gcc
and next
sudo yum -y install gcc-c++

If it is still not working, you can try this
sudo apt-get install build-essential
in my case, it solved the problem.

try this :
sudo apt-get install libblas-dev libatlas-base-dev
I had a similar issue on Ubuntu 14.04. For me the following Ubuntu packages

On MacOS I also had problems trying to install fbprophet which had gcc as one of its dependencies.
After trying several steps as recommended by #Boris the command below from the Facebook Prophet project page worked for me in the end.
conda install -c conda-forge fbprophet
It installed all the needed dependencies for fbprophet. Make sure you have anaconda installed.

This page is gonna save your life, for all further lib issues that are forthcoming,
For Alpine(>=3.6), use
apk --update --upgrade add gcc musl-dev jpeg-dev zlib-dev libffi-dev cairo-dev pango-dev gdk-pixbuf-dev

For CentOS 7.2：
LSB Version: :core-4.1-amd64:core-4.1-noarch
Distributor ID: CentOS
Description: CentOS Linux release 7.2.1511 (Core)
Release: 7.2.1511
Codename: Core
Install eventlet:
sudo yum install python-devel
sudo easy_install -ZU eventlet
Terminal info：
[root#localhost ~]# easy_install -ZU eventlet
Searching for eventlet
Reading http://pypi.python.org/simple/eventlet/
Best match: eventlet 0.19.0
Downloading https://pypi.python.org/packages/5a/e8/ac80f330a80c18113df0f4f872fb741974ad2179f8c2a5e3e45f40214cef/eventlet-0.19.0.tar.gz#md5=fde857181347d5b7b921541367a99204
Processing eventlet-0.19.0.tar.gz
Running eventlet-0.19.0/setup.py -q bdist_egg --dist-dir /tmp/easy_install-Hh9GQY/eventlet-0.19.0/egg-dist-tmp-rBFoAx
Adding eventlet 0.19.0 to easy-install.pth file
Installed /usr/lib/python2.6/site-packages/eventlet-0.19.0-py2.6.egg
Processing dependencies for eventlet
Finished processing dependencies for eventlet

For openSUSE 42.1 Leap Linux use this
sudo zypper install python3-devel

I am using MacOS catalina 10.15.4. None of the posted solutions worked for me. What worked for me is:
>> xcode-select --install
xcode-select: error: command line tools are already installed, use "Software Update" to install updates
>> env LDFLAGS="-I/usr/local/opt/openssl/include -L/usr/local/opt/openssl/lib" pip install psycopg2==2.8.4
Collecting psycopg2==2.8.4
Using cached psycopg2-2.8.4.tar.gz (377 kB)
Installing collected packages: psycopg2
Attempting uninstall: psycopg2
Found existing installation: psycopg2 2.7.7
Uninstalling psycopg2-2.7.7:
Successfully uninstalled psycopg2-2.7.7
Running setup.py install for psycopg2 ... done
Successfully installed psycopg2-2.8.4
use pip3 for python3

if you are on Mac as myself, try this in your terminal: xcode-select --install
Then accept the installation request, and it works afterwards as described in this issue

Build from source and install, this is fixed in the latest release (10.3+):
mkdir -p /tmp/install/netifaces/
cd /tmp/install/netifaces && wget -O "netifaces-0.10.4.tar.gz" "https://pypi.python.org/packages/source/n/netifaces/netifaces-0.10.4.tar.gz#md5=36da76e2cfadd24cc7510c2c0012eb1e"
tar xvzf netifaces-0.10.4.tar.gz
cd netifaces-0.10.4 && python setup.py install

Similarly I fixed it like this (notice python34):
sudo yum install python34-devel

sudo apt install gcc
It works for PyCharm on Ubuntu 20.10.

If you are migrating to a more modern version of python3 e.g. python3.5 to python3.8 You may want to check/upgrade the versions of the library that are failing if you have already installed the recommended libraries to handle gcc building python3-dev + other libraries as suggested.
It depends on the package. Some versions of the packages may not be supported on later versions of python3.

Having trouble installing PyAudio for Python3 on Mint

I was following the instructions here and I'm having trouble getting the installation to work. Basically, the first part works fine. I downloaded portaudio, followed the instructions, and it all seemed to work.
However, when I triedpython3 setup.py install, I got an error. The error came from the /src/_portaudiomodule.c file, and it said that "The file Python.h could not be found". I don't really understand what's going on because there was no Python.h file when I extracted the PyAudio archive. I don't know where the Python.h file was supposed to come from.
I'm kind of a noob to unix systems so I could have easily made a mistake somewhere. I've been trying to solve this for hours and I've had no luck so far. Thanks in advance for your help!

To install the latest version of pyaudio using conda:
source activate -your environment name-
pip install pyaudio
You may run into the following error when installing from pip:
src/_portaudiomodule.c:29:23: fatal error: portaudio.h: No such file or directory
#include "portaudio.h"
compilation terminated.
error: command 'gcc' failed with exit status 1
That is because you don't have the PortAudio development package installed. Install it with:
sudo apt-get install portaudio19-dev

You don't need to compile pyaudio. To install PyAudio, run:
$ sudo add-apt-repository universe
$ sudo apt-get install python-pyaudio python3-pyaudio
The first command enables Universe Ubuntu repository.
If you want to compile it e.g., to use the latest version from git; install build dependencies:
$ sudo apt-get build-dep python-pyaudio python3-pyaudio
After that, you could install it from sources using pip:
$ python3 -mpip install pyaudio
Or to install the current version from git:
$ pip install -e git+http://people.csail.mit.edu/hubert/git/pyaudio.git#egg=pyaudio
Run pip commands inside a virtualenv or add --user command-line option, to avoid modifying the global python3 installation (leave it to the package manager).
I've tested it on Ubuntu. Let me know if it fails on Mint.

I have found the work arround for mac.
please refer the below steps to install pyaudio on python 3.5
Follow these steps :
export HOMEBREW_NO_ENV_FILTERING=1
xcode-select --install
brew update
brew upgrade
brew install portaudio
pip install pyaudio

I was able to get it install with anaconda, using this package.
Follow install instructions for linux here, then do:
conda install -c bokeh pyaudio=0.2.7

try to install using the the below command
pip install pyaudio
after that install the required Microsoft Visual C++ 14.0
refer the below image for the same.
and restart the system and run the same command again
pip install pyaudio

Python.h is nothing but a header file. It is used by gcc to build applications. You need to install a package called python-dev. This package includes header files, a static library and development tools for building Python modules, extending the Python interpreter or embedding Python in applications. To install this package, enter:
sudo apt-get install python3-dev

Error: No module named psycopg2.extensions

I am trying to set up a PostgreSQL database for my django project, which I believe I have done now thanks to the replies to my last question Problems setting up a postgreSQL database for a django project. I am now trying to run the command 'python manage.py runserver' in Terminal to get my localhost up but when I run the command, I see this response...
Error: No module named psycopg2.extensions
I'm not sure what this means - I have tried to download psycopg2 but can't seem to find a way to download psycopg2 using homebrew. I have tried easy_install, pip install and sudo but all return errors like this...
Downloading http://www.psycopg.org/psycopg/tarballs/PSYCOPG-2-4/psycopg2-2.4.5.tar.gz
Processing psycopg2-2.4.5.tar.gz
Writing /tmp/easy_install-l7Qi62/psycopg2-2.4.5/setup.cfg
Running psycopg2-2.4.5/setup.py -q bdist_egg --dist-dir /tmp/easy_install-l7Qi62/psycopg2-2.4.5/egg-dist-tmp-PBP5Ds
no previously-included directories found matching 'doc/src/_build'
unable to execute gcc-4.0: No such file or directory
error: Setup script exited with error: command 'gcc-4.0' failed with exit status 1
How to fix this?

The first thing to do is to install the dependencies.
sudo apt-get build-dep python-psycopg2
sudo apt install python3-psycopg2 # Python 3
After that go inside your virtualenv and use:
pip install psycopg2-binary
These two commands should solve the problem.

pip install psycopg2-binary
The psycopg2 wheel package will be renamed from release 2.8; in order to keep installing from binary please use "pip install psycopg2-binary" instead. For details see: http://initd.org/psycopg/docs/install.html#binary-install-from-pypi.

For Django 2 and python 3 install psycopg2 using pip3 :
pip3 install psycopg2

I installed it successfully using these commands:
sudo apt-get install libpq-dev python-dev
pip install psycopg2

For macOS Mojave just run pip install psycopg2-binary. Works fine for me, python version -> Python 3.7.2

first install apt-get install python-setuptools
then try easy_install psycopg2

This is what helped me on Ubuntu if your python installed from Ubuntu installer. I did this after unsuccessfully trying 'apt-get install' and 'pip install':
In terminal:
sudo synaptic
then in synaptic searchfield write
psycopg2
choose
python-psycopg2
mark it for installation using mouse right-click and push 'apply'. Of course, if you don't have installed synaptic, then first do:
sudo apt-get install synaptic

I ran into this same issues recently and this code worked.
sudo apt-get install libpq-dev python-dev-is-python3
Then
pip3 install psycopg2

In python 3.4, while in a virtual environment, make sure you have the build dependencies first:
sudo apt-get build-dep python3-psycopg2
Then install it:
pip install psycopg2

On Alpine Linux (majority of the docker containers) do:
apk add postgresql-dev
Then:
pip install psycopg2-binary

pip3 install django-psycopg2-extension
I know i am late and there's lot of answers up here which also solves the problem. But today i also faced this problem and none of this helps me. Then i found the above magical command which solves my problem :-P . so i am posting this as it might be case for you too.
Happy coding.

I used the extension after only importing psycopg2:
import psycopg2
...
psycopg2.extensions.AsIs(anap[i])

It seems that you need gcc-4.0, and it would be helpful to specify your OS type and version.
Maybe this question will help you a bit: Installing GCC to Mac OS X Leopard without installing Xcode
Update
I'm a Windows user, so I can't test your setup, but a quick google pointed to some more links:
http://hardlifeofapo.com/psycopg2-and-postgresql-9-1-on-snow-leopard/
Cannot install psycopg2 on OSX 10.6.7 with XCode4

I encountered the No module named psycopg2.extensions error when trying to run pip2 install psycopg2 on a Mac running Mavericks (10.9). I don't think my stack trace included a message about gcc, and it also included a hint:
Error: pg_config executable not found.
Please add the directory containing pg_config to the PATH
or specify the full executable path with the option:
python setup.py build_ext --pg-config /path/to/pg_config build ...
or with the pg_config option in 'setup.cfg'.
I looked for the pg_config file in my Postgres install and added the folder containing it to my path: /Applications/Postgres.app/Contents/Versions/9.4/bin. Your path may be different, especially if you have a different version of Postgres installed - I would just poke around until you find the bin/ folder. After doing this, the installation worked.

try this: sudo pip install -i https://testpypi.python.org/pypi psycopg2==2.7b2
.. this is especially helpful if you're running into egg error
on aws ec2 instances if you run into gcc error; try this
1. sudo yum install gcc python-setuptools python-devel postgresql-devel
2. sudo su -
3. sudo pip install psycopg2

This one worked for me
python manage.py migrate

I had such problem when trying to run python script as a sudo, while psycopg2 was installed via pip3 to my own user's directory.
I managed to resolve the issue for myself removing pip3 version, and just installing it via apt:
pip3 uninstall psycopg2
sudo apt install python3-psycopg2

you can install gcc for macos from https://github.com/kennethreitz/osx-gcc-installer
after instalation of gcc you'll be able to install psycopg with easy_install or with pip

Check if you have installed psycopg2 if not
sudo apt-get install psycopg2
Install the dependencies.
sudo apt-get build-dep python-psycopg2
These two commands should solve the problem.

This error raise because you not install postgres database in you project virtutal environment. you should run one of these command.
from a terminal you can you command for sudo.
sudo apt-get install build-dep python-psycopg2
for pip (pip basically work for python)
pip install psycopg2
or
pip3 install psycopg2-binary
i'm pretty sure it will work for you.