A function for your powershell profile which helps activating the python venv in PyCharm. (Assuming that you use the default folders offered by pycharm on project creation)

Microsoft.PowerShell_profile.ps1

function IfTrue($a, $b, $c) { if ($a) { $b } else { $c } }

function Coalesce($a, $b) { if ($a -ne $null) { $a } else { $b } }

New-Alias "??" Coalesce

New-Alias "?:" IfTrue

function py-avenv {
    param (
        [string]$venvName = $null
    )

    $intellij_env_vars = get-childitem env: -name -include __INTELLIJ*
    if (!($intellij_env_vars -eq $null)) {
        $p = get-childitem -path ".." -name -include ".venvs"
        if (!($p -eq $null)) {
                $project_name = (Get-Item -Path ".\").Name
                $p = ?? (get-childitem -path "..\.venvs" -name -include $project_name) $venvName
                $project_name = ?? (get-childitem -path "..\.venvs" -name -include $project_name) $null
                
                if ($p -ne $null) {
                    . "..\.venvs\$p\Scripts\activate.ps1"
                    write-host -foreground green "venv has been activated"
                } else {
                    if ($project_name -ne $null) {
                        $project_name = (Get-Item -Path ".\").Name
                        . "..\.venvs\$project_name\Scripts\activate.ps1"
                        write-host -foreground green "venv has been activated"
                    } else {
                        write-host -foreground red "Couldn't find the project's venv directory"
                    }
                }
            } else {
                write-host -foreground red "No .venv folder found. Cant activate venv."
            }
    } else {
        write-host -foreground red 'Not in intellij.'
    }
}

$intellij_var = get-childitem env: -name -include __INTELLIJ*
$pyenvname = get-childitem env: -name -include PYENVNAME

if (($intellij_var -ne $null) -and ($pyenvname -ne $null)) {
    py-avenv -venvName $env:PYENVNAME
}