from envarible import setenv, unsetenv, getenv, getenvall
# The variable TEST is stored permanently with the VALUE value
setenv('TEST', 'VALUE') 

print(getenv('TEST'))
>>> VALUE

# The TEST variable is permanently deleted
unsetenv('TEST')


print(getenv('TEST'))
>>> None

# returned all Environment Variable
all_env = getenvall()

from envariable import setenv, getenv

path = getenv('PATH')
setenv('PATH', f'{path}:/my/dir')