How does qtconsole switch Python virtual environments?

it is friendly to install Anaconda, with qtconsole code coloring. The base (root), of the default environment for
Anaconda does not display virtual environments created with python-m venv .
now want to enter the virtual environment in qtconsole, how to do it?

Mar.23,2021
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b36457-4ec65.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b36457-4ec65.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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