Sometimes the shell prompt doesn’t display the name of the virtual environment and you want to be sure if you are in a virtual environment or not.
Run the python interpreter and try:
import sys
sys.prefix
sys.real_prefix
sys.prefix
will point to the system python installation and sys.real_prefix
is not defined.sys.prefix
will point to the virtual environment python installation and sys.real_prefix
will point to the system python installation.For virtual environments created using the standard library venv module there is no sys.real_prefix
. Instead, check whether sys.base_prefix
is the same as sys.prefix
.