Error installing mysqlclient for python on Ubuntu 18.04

I installed Python 2.7.15rci and Python 3.6.7 on Ubuntu. When i did 'pip list' on virtualenv it returns me:

Django (2.1.5)
pip (9.0.1)
pkg-resources (0.0.0)
pytz (2018.9)
setuptools (39.0.1)
wheel (0.32.3)

I'm trying to install mysqlclient (pip install mysqlclient) and returns an error.

  unable to execute 'x86_64-linux-gnu-gcc': No such file or directory
  error: command 'x86_64-linux-gnu-gcc' failed with exit status 1

  ----------------------------------------
  Failed building wheel for mysqlclient
  Running setup.py clean for mysqlclient
Failed to build mysqlclient
Installing collected packages: mysqlclient
  Running setup.py install for mysqlclient ... error
    Complete output from command /home/david/env/project/bin/python3 -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-pq18uxjj/mysqlclient/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-y28h4ou0-record/install-record.txt --single-version-externally-managed --compile --install-headers /home/david/env/project/include/site/python3.6/mysqlclient:
    /usr/lib/python3.6/distutils/dist.py:261: UserWarning: Unknown distribution option: 'long_description_content_type'
      warnings.warn(msg)
    running install
    running build
    running build_py
    creating build
    creating build/lib.linux-x86_64-3.6
    creating build/lib.linux-x86_64-3.6/MySQLdb
    copying MySQLdb/__init__.py -> build/lib.linux-x86_64-3.6/MySQLdb
    copying MySQLdb/_exceptions.py -> build/lib.linux-x86_64-3.6/MySQLdb
    copying MySQLdb/compat.py -> build/lib.linux-x86_64-3.6/MySQLdb
    copying MySQLdb/connections.py -> build/lib.linux-x86_64-3.6/MySQLdb
    copying MySQLdb/converters.py -> build/lib.linux-x86_64-3.6/MySQLdb
    copying MySQLdb/cursors.py -> build/lib.linux-x86_64-3.6/MySQLdb
    copying MySQLdb/release.py -> build/lib.linux-x86_64-3.6/MySQLdb
    copying MySQLdb/times.py -> build/lib.linux-x86_64-3.6/MySQLdb
    creating build/lib.linux-x86_64-3.6/MySQLdb/constants
    copying MySQLdb/constants/__init__.py -> build/lib.linux-x86_64-3.6/MySQLdb/constants
    copying MySQLdb/constants/CLIENT.py -> build/lib.linux-x86_64-3.6/MySQLdb/constants
    copying MySQLdb/constants/CR.py -> build/lib.linux-x86_64-3.6/MySQLdb/constants
    copying MySQLdb/constants/ER.py -> build/lib.linux-x86_64-3.6/MySQLdb/constants
    copying MySQLdb/constants/FIELD_TYPE.py -> build/lib.linux-x86_64-3.6/MySQLdb/constants
    copying MySQLdb/constants/FLAG.py -> build/lib.linux-x86_64-3.6/MySQLdb/constants
    running build_ext
    building 'MySQLdb._mysql' extension
    creating build/temp.linux-x86_64-3.6
    creating build/temp.linux-x86_64-3.6/MySQLdb
    x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -g -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -Dversion_info=(1,4,1,'final',0) -D__version__=1.4.1 -I/usr/include/mysql -I/home/david/env/project/include -I/usr/include/python3.6m -c MySQLdb/_mysql.c -o build/temp.linux-x86_64-3.6/MySQLdb/_mysql.o
    unable to execute 'x86_64-linux-gnu-gcc': No such file or directory
    error: command 'x86_64-linux-gnu-gcc' failed with exit status 1

    ----------------------------------------
Command "/home/david/env/project/bin/python3 -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-pq18uxjj/mysqlclient/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-y28h4ou0-record/install-record.txt --single-version-externally-managed --compile --install-headers /home/david/env/project/include/site/python3.6/mysqlclient" failed with error code 1 in /tmp/pip-build-pq18uxjj/mysqlclient/

So, I have tried different methods found like:

sudo apt-get install python-dev
sudo apt-get install python3-dev
sudo apt-get install libmysqlclient-dev

and some more... but none of them work for me and the problem persists. Any suggestions?

Thank you!

gcc is part of the build-essential package, which you should install before anything else:

sudo apt-get install build-essential

UPDATE: Following @bosnjak's suggestion, you also might need to install the openssl developer tools:

sudo apt-get install libssl-dev

I specified the particular version of python it's 3.7 And that helped me

I have installed these ones:

sudo apt-get install python3.7-dev libmysqlclient-dev

And then installed mysqlclient by:

pip install mysqlclient

I turned out, that the solution is slightly different for almost every Python version. For those using different versions, such as Python 2.x, 3.5 or 3.7 I found this:

Part I

For Python 2.x use:

  $ sudo apt-get install python-dev

For Python 2.7 use:

  $ sudo apt-get install libffi-dev

For Python 3.x use:

  $ sudo apt-get install python3-dev

For Python 3.4 use:

  $ sudo apt-get install python3.4-dev

For Python 3.7 use:

  $ sudo apt-get install python3.7-dev

For Python 3.8 use:

  $ sudo apt-get install python3.8-dev

For Python 3.9 use:

  $ sudo apt-get install python3.9-dev

Part II

If this still doesn't help, others have pointed out to install

  $ sudo apt-get install build-essential

and finally

  $ sudo apt-get install libssl-dev

But the last two didn't help myself - but hoping this might help you!