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pip install <python_package> is stuck. Message to upgrade from pip==9.0.1 to pip==19.0.3 pops up. How to install any new packages using pip 9.0.1?

I've upgraded pip to 19.0.3. Then I removed pip==19.0.3 and reinstalled pip9.0.1. Now every time I try to install anything this message keeps coming up.
You are using pip version 9.0.1, however, version 19.0.3 is available.
You should consider upgrading via the 'pip install --upgrade pip'
command.
Please help me out.
Also i'm not able to install any more python packages.
pip install pyAudio
> Collecting pyAudio Using cached
> https://files.pythonhosted.org/packages/ab/42/b4f04721c5c5bfc196ce156b3c768998ef8c0ae3654ed29ea5020c749a6b/PyAudio-0.2.11.tar.gz
> Building wheels for collected packages: pyAudio Running setup.py
> bdist_wheel for pyAudio ... error Complete output from command
> /usr/bin/python -u -c "import setuptools,
> tokenize;__file__='/tmp/pip-build-sBep_e/pyAudio/setup.py';f=getattr(tokenize,
> 'open', open)(__file__);code=f.read().replace('\r\n',
> '\n');f.close();exec(compile(code, __file__, 'exec'))" bdist_wheel -d
> /tmp/tmpJr7LNvpip-wheel- --python-tag cp27: running bdist_wheel
> running build running build_py creating build creating
> build/lib.linux-x86_64-2.7 copying src/pyaudio.py ->
> build/lib.linux-x86_64-2.7 running build_ext building '_portaudio'
> extension creating build/temp.linux-x86_64-2.7 creating
> build/temp.linux-x86_64-2.7/src x86_64-linux-gnu-gcc -pthread
> -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -Wdate-time -D_FORTIFY_SOURCE=2 -g -fdebug-prefix-map=/build/python2.7-3hk45v/python2.7-2.7.15~rc1=. -fstack-protector-strong -Wformat -Werror=format-security -fPIC -I/usr/include/python2.7 -c src/_portaudiomodule.c -o build/temp.linux-x86_64-2.7/src/_portaudiomodule.o
> src/_portaudiomodule.c:29:10: fatal error: portaudio.h: No such file
> or directory #include "portaudio.h"
> ^~~~~~~~~~~~~ compilation terminated. error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
> ---------------------------------------- Failed building wheel for pyAudio Running setup.py clean for pyAudio Failed to build
> pyAudio Installing collected packages: pyAudio Running setup.py
> install for pyAudio ... error
> Complete output from command /usr/bin/python -u -c "import setuptools,
> tokenize;__file__='/tmp/pip-build-sBep_e/pyAudio/setup.py';f=getattr(tokenize,
> 'open', open)(__file__);code=f.read().replace('\r\n',
> '\n');f.close();exec(compile(code, __file__, 'exec'))" install
> --record /tmp/pip-72KZyy-record/install-record.txt --single-version-externally-managed --compile:
> running install
> running build
> running build_py
> creating build
> creating build/lib.linux-x86_64-2.7
> copying src/pyaudio.py -> build/lib.linux-x86_64-2.7
> running build_ext
> building '_portaudio' extension
> creating build/temp.linux-x86_64-2.7
> creating build/temp.linux-x86_64-2.7/src
> x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -Wdate-time -D_FORTIFY_SOURCE=2 -g -fdebug-prefix-map=/build/python2.7-3hk45v/python2.7-2.7.15~rc1=. -fstack-protector-strong -Wformat -Werror=format-security -fPIC -I/usr/include/python2.7 -c src/_portaudiomodule.c -o build/temp.linux-x86_64-2.7/src/_portaudiomodule.o
> src/_portaudiomodule.c:29:10: fatal error: portaudio.h: No such file or directory
> #include "portaudio.h"
> ^~~~~~~~~~~~~
> compilation terminated.
> error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
>
> ---------------------------------------- Command "/usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-sBep_e/pyAudio/setup.py';f=getattr(tokenize,
> 'open', open)(__file__);code=f.read().replace('\r\n',
> '\n');f.close();exec(compile(code, __file__, 'exec'))" install
> --record /tmp/pip-72KZyy-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-build-sBep_e/pyAudio/ You are using pip version 9.0.1,
> however version 19.0.3 is available. You should consider upgrading via
> the 'pip install --upgrade pip' command.

Installing pydev solved 'x86_64-linux-gnu-gcc' error for me!
easy as:
sudo apt-get install python-dev
You may also need build-essential for similar issues,
sudo apt-get install build-essential
Hope this helps.

You need to install portaudio dev package:
Download binary files of portaudio from here
Extract it to somewhere
in terminal go to that directory (with cd /where/you/extract/those)
run this command there: ./configure
run this: make
and this one: sudo make install
now you can install portaudio with pip:
$ sudo pip install pyAudio
Installing collected packages: pyAudio
Running setup.py install for pyAudio ... done
Successfully installed pyAudio-0.2.11

Try this sudo apt-get install python-pyaudio.
Thhis should work!

The only thing you need to do is upgrading the pip utility to latest version by using one these commands
pip install pip setuptools -U
or
pip install --upgrade pip
Note: You may need to add 'sudo' as prefix, if you're working on system level python installation.

Installing pyodbc failed on Linux

I just run this command:
sudo pip install pyodbc
then I get below message and error:
steven81#PythonWEBVM:~$ sudo pip install pyodbc
The directory '/home/steven81/.cache/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
The directory '/home/steven81/.cache/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
Collecting pyodbc
Downloading https://files.pythonhosted.org/packages/aa/71/cef225c4889620a1a00251d24c1746fe0cf4124290a75d1c2dc5c187b61f/pyodbc-4.0.23.tar.gz (215kB)
100% |████████████████████████████████| 225kB 13.5MB/s
Installing collected packages: pyodbc
Running setup.py install for pyodbc ... error
Complete output from command /usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-install-NR7ytY/pyodbc/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-record-voJYBN/install-record.txt --single-version-externally-managed --compile:
running install
running build
running build_ext
building 'pyodbc' extension
creating build
creating build/temp.linux-x86_64-2.7
creating build/temp.linux-x86_64-2.7/src
x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -Wdate-time -D_FORTIFY_SOURCE=2 -g -fstack-protector-strong -Wformat -Werror=format-security -fPIC -DPYODBC_VERSION=4.0.23 -I/usr/include/python2.7 -c src/pyodbcmodule.cpp -o build/temp.linux-x86_64-2.7/src/pyodbcmodule.o -Wno-write-strings
cc1plus: warning: command line option ‘-Wstrict-prototypes’ is valid for C/ObjC but not for C++
In file included from src/pyodbcmodule.cpp:11:0:
src/pyodbc.h:56:17: fatal error: sql.h: No such file or directory
compilation terminated.
error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
----------------------------------------
Command "/usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-install-NR7ytY/pyodbc/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-record-voJYBN/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-install-NR7ytY/pyodbc/
I saw there is an error:
command 'x86_64-linux-gnu-gcc' failed with exit status 1
then I search in on google, it asked to run this:
sudo apt-get install python-dev
so, I run this but get below message:
steven81#PythonWEBVM:~$ sudo apt-get install python-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
python-dev is already the newest version (2.7.12-1~16.04).
0 upgraded, 0 newly installed, 0 to remove and 4 not upgraded.
so what's the problem and how to install pyodbc correctlly?

For anyone looking for the pyodbc install to connect to SQLServer from Linux(ubuntu).
sudo apt-get install unixodbc-dev
sudo apt-get install python3-dev
python3 -m pip install pyodbc

portaudio.h: No such file or directory

I got the following error while trying to install pyaudio using pip3 in ubuntu 16.04:
Collecting pyaudio
Downloading PyAudio-0.2.11.tar.gz
Installing collected packages: pyaudio
Running setup.py install for pyaudio ... error
Complete output from command /usr/bin/python3 -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-mxgvewdb/pyaudio/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-v55chjee-record/install-record.txt --single-version-externally-managed --compile:
running install
running build
running build_py
creating build
creating build/lib.linux-x86_64-3.5
copying src/pyaudio.py -> build/lib.linux-x86_64-3.5
running build_ext
building '_portaudio' extension
creating build/temp.linux-x86_64-3.5
creating build/temp.linux-x86_64-3.5/src
x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -g -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -I/usr/include/python3.5m -c src/_portaudiomodule.c -o build/temp.linux-x86_64-3.5/src/_portaudiomodule.o
src/_portaudiomodule.c:29:23: fatal error: portaudio.h: No such file or directory
compilation terminated.
error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
----------------------------------------
Command "/usr/bin/python3 -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-mxgvewdb/pyaudio/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-v55chjee-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-build-mxgvewdb/pyaudio/

This should help
$ sudo apt-get install portaudio19-dev python-pyaudio python3-pyaudio
Tested on Ubuntu 18.04, Python 3.7.2, pyaudio 0.2.11
Added 8th of Jan 2021:
On Ubuntu 20.04 you have to use:
$ sudo apt install portaudio19-dev python3-pyaudio

For Windows, here's what I've been going through...
There're several ways to install PortAudio
vcpkg, https://vcpkg.info/port/portaudio
winget, https://winget.run/pkg/intxcc/pyaudio
Or, manually build from source and install manually
download source, http://files.portaudio.com/download.html
build with cmake, with the matching compiler(msvc/mingw) and arch(x64/x86) to your Python
put "portaudio.h" into python-include directory, e.g. c:\Python38-32\include\
put "portaudio.lib into python-lib directory, e.g. c:\Python38-32\libs
Arrh!
the "min()" macro in pyaudio's soucefile _portaudiomodule.c is troublesome, comment it out manually
pip install pyaudio --no-clean
find _portaudiomodule.c in the temp directory and manually comment-out the "min()" macro e.g. c:\Temp\pip-install-yysb8bme\pyaudio_c92585\src\_portaudiomodule.c
pip install from that directorye.g. pip install c:\Temp\pip-install-yysb8bme\pyaudio_c92585\
Or,3rd party wheels
this answer said:
pip install pipwinpipwin install pyaudio

For MacOS (Intel/Apple Silicon):
Step 1:
brew install portaudio
Step 2:
brew --prefix portaudio
The output provided from the above command, will be required in Step 3, which will look something similar to /opt/homebrew/opt/portaudio
Step 3:
Create .pydistutils.cfg in your home directory
sudo nano ~/.pydistutils.cfg
then paste the following in the file, save and exit
[build_ext]
include_dirs=<PATH FROM STEP 2>/include/
library_dirs=<PATH FROM STEP 2>/lib/
Step 4:
pip3 install pyaudio

For Centos7/RHEL:
yum install portaudio-devel alsa-lib-devel portaudio
pip install pyaudio --user

Installing hunspell package

I'm looking forward to install the hunspell package using pip, but it throws the following error:
Collecting hunspell
Using cached hunspell-0.4.1.tar.gz
Building wheels for collected packages: hunspell
Running setup.py bdist_wheel for hunspell ... error
Complete output from command /root/anaconda3/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-oyfpp3iy/hunspell/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" bdist_wheel -d /tmp/tmphqvqt4lxpip-wheel- --python-tag cp34:
/root/anaconda3/lib/python3.4/distutils/extension.py:132: UserWarning: Unknown Extension options: 'compile_args', 'macros'
warnings.warn(msg)
running bdist_wheel
running build
running build_ext
building 'hunspell' extension
creating build
creating build/temp.linux-x86_64-3.4
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -I/usr/include/hunspell -I/root/anaconda3/include/python3.4m -c hunspell.c -o build/temp.linux-x86_64-3.4/hunspell.o
hunspell.c:21:22: erreur fatale: hunspell.h : Aucun fichier ou dossier de ce type
#include <hunspell.h>
^
compilation terminée.
error: command 'gcc' failed with exit status 1
----------------------------------------
Failed building wheel for hunspell
Running setup.py clean for hunspell
Failed to build hunspell
Installing collected packages: hunspell
Running setup.py install for hunspell ... error
Complete output from command /root/anaconda3/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-oyfpp3iy/hunspell/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-euhsmasb-record/install-record.txt --single-version-externally-managed --compile:
/root/anaconda3/lib/python3.4/distutils/extension.py:132: UserWarning: Unknown Extension options: 'compile_args', 'macros'
warnings.warn(msg)
running install
running build
running build_ext
building 'hunspell' extension
creating build
creating build/temp.linux-x86_64-3.4
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -I/usr/include/hunspell -I/root/anaconda3/include/python3.4m -c hunspell.c -o build/temp.linux-x86_64-3.4/hunspell.o
hunspell.c:21:22: erreur fatale: hunspell.h : Aucun fichier ou dossier de ce type
#include <hunspell.h>
^
compilation terminée.
error: command 'gcc' failed with exit status 1
----------------------------------------
Command "/root/anaconda3/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-oyfpp3iy/hunspell/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-euhsmasb-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-build-oyfpp3iy/hunspell/
[root#localhost Bureau]# alias python-devel=python34-devel
[root#localhost Bureau]# pip install hunspell
Collecting hunspell
Using cached hunspell-0.4.1.tar.gz
Building wheels for collected packages: hunspell
Running setup.py bdist_wheel for hunspell ... error
Complete output from command /root/anaconda3/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-xpljhkom/hunspell/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" bdist_wheel -d /tmp/tmptwg_9c8vpip-wheel- --python-tag cp34:
/root/anaconda3/lib/python3.4/distutils/extension.py:132: UserWarning: Unknown Extension options: 'compile_args', 'macros'
warnings.warn(msg)
running bdist_wheel
running build
running build_ext
building 'hunspell' extension
creating build
creating build/temp.linux-x86_64-3.4
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -I/usr/include/hunspell -I/root/anaconda3/include/python3.4m -c hunspell.c -o build/temp.linux-x86_64-3.4/hunspell.o
hunspell.c:21:22: erreur fatale: hunspell.h : Aucun fichier ou dossier de ce type
#include <hunspell.h>
^
compilation terminée.
error: command 'gcc' failed with exit status 1
----------------------------------------
Failed building wheel for hunspell
Running setup.py clean for hunspell
Failed to build hunspell
Installing collected packages: hunspell
Running setup.py install for hunspell ... error
Complete output from command /root/anaconda3/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-xpljhkom/hunspell/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-zrlp2go9-record/install-record.txt --single-version-externally-managed --compile:
/root/anaconda3/lib/python3.4/distutils/extension.py:132: UserWarning: Unknown Extension options: 'compile_args', 'macros'
warnings.warn(msg)
running install
running build
running build_ext
building 'hunspell' extension
creating build
creating build/temp.linux-x86_64-3.4
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -I/usr/include/hunspell -I/root/anaconda3/include/python3.4m -c hunspell.c -o build/temp.linux-x86_64-3.4/hunspell.o
hunspell.c:21:22: erreur fatale: hunspell.h : Aucun fichier ou dossier de ce type
#include <hunspell.h>
^
compilation terminée.
error: command 'gcc' failed with exit status 1
----------------------------------------
Command "/root/anaconda3/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-xpljhkom/hunspell/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-zrlp2go9-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-build-xpljhkom/hunspell/
And I've heard that installing python3-dev would resolve the problem.
I tried with no succes.
I'm using python 3.4 under CentOS 7.
Can I get some help please ? Thanks in advance.

I just went through this using python3.4 and pip3.4 on Centos7 64-bit. (NB you need both python3.4 and pip3.4)
I eventually got it working via pip3.4, but before this would work, I had to take a few extra steps. The steps I took were:
Install the python3.4 development headers:
sudo yum install python34u-devel.x86_64
Install hunspell and hunspell-devel (needed for hunspell.h and hunspell lib):
sudo yum install hunspell hunspell-devel
In /usr/lib64/, add an extra symlink for the hunspell library:
sudo ln -s libhunspell-1.3.so libhunspell.so
Finally, run the command:
sudo pip3.4 install hunspell
... and this gave me the following output:
... (compiler output deleted) ...
Successfully built hunspell
Installing collected packages: hunspell
Successfully installed hunspell-0.4.1

Try This:
sudo apt install python-dev libhunspell-dev
pip install hunspell

Solution by OP.
I figured it out, I'll share this method here, it may help :)
first you need to install python-devel and
yum install python-devel
yum install hunspell-devel
then corrected your symlink
cd /usr/lib64
sudo ln -s libhunspell-1.3.so.0.0.0 libhunspell.so
ls -l | grep hunspell
Good Luck :)

I am working on MAC OS and this solved the error for me.
Hunspell Installation Steps:
brew install hunspell (installed version 1.7.0_2-1)
brew install pkg-config (0.29.2_3)
ln -s /usr/local/lib/libhunspell-1.7.a /usr/local/lib/libhunspell.a
ln -s /usr/local/Cellar/hunspell/1.7.0_2/lib/libhunspell-1.7.dylib /usr/local/Cellar/hunspell/1.7.0_2/lib/libhunspell.dylib
CFLAGS=$(pkg-config --cflags hunspell) LDFLAGS=$(pkg-config --libs hunspell) pip3 install hunspell

Error while installing oursql in virtualenv

When I try to install oursql under virtual environment using pip install oursql I get following error:
Collecting oursql
Using cached oursql-0.9.3.1.tar.bz2
Building wheels for collected packages: oursql
Running setup.py bdist_wheel for oursql
Complete output from command /home/raghav/janpro/release_1/venv/bin/python2 -c "import setuptools;__file__='/tmp/pip-build-ndxBoY/oursql/setup.py';exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" bdist_wheel -d /tmp/tmpe4k7ejpip-wheel-:
cython not found, using previously-cython'd .c file.
running bdist_wheel
running build
running build_ext
warning: no usable mysql_config and no _winreg module to try; hopefully you have usable CFLAGS/LDFLAGS set.
building 'oursql' extension
creating build
creating build/temp.linux-x86_64-2.7
creating build/temp.linux-x86_64-2.7/oursqlx
x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -D_FORTIFY_SOURCE=2 -g -fstack-protector-strong -Wformat -Werror=format-security -fPIC -I/usr/include/python2.7 -c oursqlx/oursql.c -o build/temp.linux-x86_64-2.7/oursqlx/oursql.o
oursqlx/oursql.c:4:20: fatal error: Python.h: No such file or directory
compilation terminated.
error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
----------------------------------------
Failed building wheel for oursql
Failed to build oursql
Installing collected packages: oursql
Running setup.py install for oursql
Complete output from command /home/raghav/janpro/release_1/venv/bin/python2 -c "import setuptools, tokenize;__file__='/tmp/pip-build-ndxBoY/oursql/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-awH5dT-record/install-record.txt --single-version-externally-managed --compile --install-headers /home/raghav/janpro/release_1/venv/include/site/python2.7/oursql:
cython not found, using previously-cython'd .c file.
running install
running build
running build_ext
warning: no usable mysql_config and no _winreg module to try; hopefully you have usable CFLAGS/LDFLAGS set.
building 'oursql' extension
x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -D_FORTIFY_SOURCE=2 -g -fstack-protector-strong -Wformat -Werror=format-security -fPIC -I/usr/include/python2.7 -c oursqlx/oursql.c -o build/temp.linux-x86_64-2.7/oursqlx/oursql.o
oursqlx/oursql.c:4:20: fatal error: Python.h: No such file or directory
compilation terminated.
error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
----------------------------------------
Command "/home/raghav/janpro/release_1/venv/bin/python2 -c "import setuptools, tokenize;__file__='/tmp/pip-build-ndxBoY/oursql/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-awH5dT-record/install-record.txt --single-version-externally-managed --compile --install-headers /home/raghav/janpro/release_1/venv/include/site/python2.7/oursql" failed with error code 1 in /tmp/pip-build-ndxBoY/oursql
Then I installed MySQL C++ connectors with sudo apt-get install libmysqlcppconn-dev but still error was coming.
So, I tried sudo pip install oursql and got following output:
The directory '/home/raghav/.cache/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
The directory '/home/raghav/.cache/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
Collecting oursql
Downloading oursql-0.9.3.1.tar.bz2 (119kB)
100% |████████████████████████████████| 122kB 986kB/s
Installing collected packages: oursql
Running setup.py install for oursql
Complete output from command /usr/bin/python -c "import setuptools, tokenize;__file__='/tmp/pip-build-GbfPiA/oursql/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-avSCME-record/install-record.txt --single-version-externally-managed --compile:
cython not found, using previously-cython'd .c file.
running install
running build
running build_ext
warning: no usable mysql_config and no _winreg module to try; hopefully you have usable CFLAGS/LDFLAGS set.
building 'oursql' extension
creating build
creating build/temp.linux-x86_64-2.7
creating build/temp.linux-x86_64-2.7/oursqlx
x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -D_FORTIFY_SOURCE=2 -g -fstack-protector-strong -Wformat -Werror=format-security -fPIC -I/usr/include/python2.7 -c oursqlx/oursql.c -o build/temp.linux-x86_64-2.7/oursqlx/oursql.o
oursqlx/oursql.c:4:20: fatal error: Python.h: No such file or directory
compilation terminated.
error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
----------------------------------------
Command "/usr/bin/python -c "import setuptools, tokenize;__file__='/tmp/pip-build-GbfPiA/oursql/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-avSCME-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-build-GbfPiA/oursql
What is going wrong? I am unable to find out.

the directory '/home/raghav/.cache/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
I think you installed some library into your virtualenv using sudo pip. So now some files are owned by the root user and your user cannot write there. You never should use virtualenv as root.
If you have a requirements.txt file I think the easiest way is to create a new virtualenv and install everything again. If you don't want/can't do this try to change the permissions with chown

You do not have python development libraries installed. Try installing it first, and then running pip.
sudo apt-get install python2.7-dev

Try this -
$ sudo apt-get install libmysqlclient-dev
$ sudo pip install oursql