1. Get source code pgAdmin4

    wget https://ftp.postgresql.org/pub/pgadmin3/pgadmin4/v1.0/source/pgadmin4-1.0.tar.gz
   

2. Unpack pgadmin4-1.0.tar.gz in home dir

    tar xvzf pgadmin4-1.0.tar.gz -C ~/
   

3. Install pip3

    sudo apt install python3-pip
   

4. Install virtualenv

    sudo pip3 install virtualenv
   

5. Create virtualenv in dir ~/py3-venv-pgadmin

    virtualenv --system-site-packages --no-setuptools --python=python3.5 ~/py3-venv-pgadmin
   

6. Activate virtualenv

    cd ~/py3-venv-pgadmin/bin
    source activate
   

7. Check pip3

    which pip3
    ~/py3-venv-pgadmin/bin/pip3
   

8. Install libpq-dev

    sudo apt install libpq-dev
   

9. Install requrements for python 3

    cd ~/pgadmin4-1.0
    pip3 install -r requirements_py3.txt
   

10. Install qt-sdk

    sudo apt install qt-sdk
    

11. Build the runtime

    cd ~/pgadmin4-1.0/runtime
    qmake
    make
    

12. For desktop deployment

    cd ~/pgadmin4-1.0/web
    touch config_local.py
    nano config_local.py
    

write:

    SERVER_MODE = False

run:

    python3 setup.py

13. Run pgAdmin4

    python3 pgAdmin4.py
    

14. Exit virtualenv

    deactivate
    

15. Remove qt-sdk

    apt purge qt-sdk
    

16. For run pgadmin4 create script ~/pgadmin4-1.0/pgadmin4.sh

    #!/usr/bin/env bash
    cd ~/py3-venv-pgadmin/bin
    source activate
    python3 ~/pgadmin4-1.0/web/pgAdmin4.py
    

Archive pgAdmin4 with py3, for use you need to perform steps: 3, 4, 8