I'm a total newbie and I'm trying to do this project this is my first time, and it's almost done. I tried every method mentioned in this SO thread to move secret key from settings. In every method i got some kind of error, even from this official django doc mathod. I couldn't find where I'm making mistake.
When the secret key is inside the settings.py, everything is working super smooth. But I need to push my code in git, so i have to hide it from settings.py.
Right now im adding the details when i tried using django-environ, to keep secret key outside of settings.py.
im putting the contents inside the root project folder.

im using miniconda: 4.10.1. here is my requirement.txt.
                # platform: linux-64
            _libgcc_mutex=0.1=main
            _openmp_mutex=4.5=1_gnu
            appdirs=1.4.4=py_0
            asgiref=3.3.4=pyhd3eb1b0_0
            attrs=21.2.0=pyhd3eb1b0_0
            black=19.10b0=py_0
            ca-certificates=2021.5.30=ha878542_0
            certifi=2021.5.30=py39hf3d152e_0
            click=8.0.1=pyhd3eb1b0_0
            django=3.2.4=pyhd3eb1b0_0
            django-environ=0.4.5=py_1
            importlib-metadata=3.10.0=py39h06a4308_0
            krb5=1.17.1=h173b8e3_0
            ld_impl_linux-64=2.35.1=h7274673_9
            libedit=3.1.20210216=h27cfd23_1
            libffi=3.3=he6710b0_2
            libgcc-ng=9.3.0=h5101ec6_17
            libgomp=9.3.0=h5101ec6_17
            libpq=12.2=h20c2e04_0
            libstdcxx-ng=9.3.0=hd4cf53a_17
            mypy_extensions=0.4.1=py39h06a4308_0
            ncurses=6.2=he6710b0_1
            openssl=1.1.1k=h7f98852_0
            pathspec=0.7.0=py_0
            pip=21.1.2=py39h06a4308_0
            psycopg2=2.8.6=py39h3c74f83_1
            python=3.9.5=h12debd9_4
            python_abi=3.9=1_cp39
            pytz=2021.1=pyhd3eb1b0_0
            readline=8.1=h27cfd23_0
            regex=2021.4.4=py39h27cfd23_0
            setuptools=52.0.0=py39h06a4308_0
            six=1.16.0=pyh6c4a22f_0
            sqlite=3.35.4=hdfb4753_0
            sqlparse=0.4.1=py_0
            tk=8.6.10=hbc83047_0
            toml=0.10.2=pyhd3eb1b0_0
            typed-ast=1.4.2=py39h27cfd23_1
            typing_extensions=3.7.4.3=pyha847dfd_0
            tzdata=2020f=h52ac0ba_0
            wheel=0.36.2=pyhd3eb1b0_0
            xz=5.2.5=h7b6447c_0
            zipp=3.4.1=pyhd3eb1b0_0
            zlib=1.2.11=h7b6447c_3
settings.py
                import os
            import environ
            from pathlib import Path
            env = environ.Env(
                # set casting, default value
                DEBUG=(bool, False)
            )
            # reading .env file
            environ.Env.read_env()
            # Build paths inside the project like this: BASE_DIR / 'subdir'.
            BASE_DIR = Path(__file__).resolve().parent.parent
            # Quick-start development settings - unsuitable for production
            # See https://docs.djangoproject.com/en/3.2/howto/deployment/checklist/
            # SECURITY WARNING: keep the secret key used in production secret!
            SECRET_KEY = env('SECRET_KEY')
            # False if not in os.environ
            DEBUG = env('DEBUG')
im not adding the rest of settings. i dont think its important. if need please mention I.ll update.
i placed .env file in root of the project where manage.py and db.sqlite3 are placed
.env
                #env file
            DEBUG=on
            #copied the entire line from settings.py
            SECRET_KEY ='xxxx django secret key here xxxx'
while running "python manage.py runserver", i got this error.

im not sure what im missing. i got some kind of error, when i tried each method and errors are not same. sorry that i cannot explain every method and error here.
there are several questions asked in this form. but most are not answered and some are not accurately explains my situation. please mention if anything else is needed or for more clarification.
 
    