Your Eppy code needs to run before the jEPlus code. One way to achieve what you want would be to use EPMacro code, which can be inserted by Eppy.

Extending on the code from your snippet (untested):

for wall in walls:
    if wall.Name in ext_walls_windowless:
        wall.Outside_Boundary_Condition = "## IF EVAL[#[Layout[] EQS TRUE] AND #[Floor[] EQS TRUE]]\r\nAdiabatic,\r\n## ELIF EVAL[#[Layout[] EQS FALSE] AND #[Floor[] EQS FALSE]] \r\nOutside,\r\n \r\n##ENDIF"
        wall.Sun_Exposure = "## IF EVAL[#[Layout[] EQS TRUE] AND #[Floor[] EQS TRUE]]\r\nNoSun,\r\n## ELIF EVAL[#[Layout[] EQS FALSE] AND #[Floor[] EQS FALSE]] \r\nSunExposed,\r\n \r\n##ENDIF"
        wall.Wind_Exposure = "## IF EVAL[#[Layout[] EQS TRUE] AND #[Floor[] EQS TRUE]]\r\nNoWind,\r\n## ELIF EVAL[#[Layout[] EQS FALSE] AND #[Floor[] EQS FALSE]] \r\nWindExposed,\r\n \r\n##ENDIF"

As I say, this is untested but I think it should work, at the expense of being quite unreadable. I think there's scope for some kind of extension to Eppy here to generate EPMacro code.

I wouldn't be surprised if Ivan Korolija orYi Zhang @ivan_korolija or @yi_zhang have worked out a better way of doing this though.

Your Eppy code needs to run before the jEPlus code. One way to achieve what you want would be to use EPMacro code, which can be inserted by Eppy.

Extending on the code from your snippet (untested):

for wall in walls:
    if wall.Name in ext_walls_windowless:
         wall.Outside_Boundary_Condition = "## IF EVAL[#[Layout[] EQS TRUE] AND #[Floor[] EQS TRUE]]\r\nAdiabatic,\r\n## ELIF EVAL[#[Layout[] EQS FALSE] AND #[Floor[] EQS FALSE]] \r\nOutside,\r\n \r\n##ENDIF"
         wall.Sun_Exposure = "## IF EVAL[#[Layout[] EQS TRUE] AND #[Floor[] EQS TRUE]]\r\nNoSun,\r\n## ELIF EVAL[#[Layout[] EQS FALSE] AND #[Floor[] EQS FALSE]] \r\nSunExposed,\r\n \r\n##ENDIF"
         wall.Wind_Exposure = "## IF EVAL[#[Layout[] EQS TRUE] AND #[Floor[] EQS TRUE]]\r\nNoWind,\r\n## ELIF EVAL[#[Layout[] EQS FALSE] AND #[Floor[] EQS FALSE]] \r\nWindExposed,\r\n \r\n##ENDIF"

As I say, this is untested but I think it should work, at the expense of being quite unreadable. I think there's scope for some kind of extension to Eppy here to generate EPMacro code.

I wouldn't be surprised if @ivan_korolija or @yi_zhang have worked out a better way of doing this though.

Your Eppy code needs to run before the jEPlus code. One way to achieve what you want would be to use EPMacro code, which can be inserted by Eppy.

Extending on the code from your snippet (untested):snippet:

...
## SET1 Layout @@layout@@
## SET1 Floor @@floor@@

for wall in walls:
    if wall.Name in ext_walls_windowless:
            wall.Outside_Boundary_Condition = "## ## IF EVAL[#[Layout[] EQS TRUE] AND #[Floor[] EQS TRUE]]\r\nAdiabatic,\r\n## TRUE]]
        wall.Outside_Boundary_Condition = 'Adiabatic'
        wall.Sun_Exposure = 'NoSun'
        wall.Wind_Exposure = 'NoWind'
        ## ELIF EVAL[#[Layout[] EQS FALSE] AND #[Floor[] EQS FALSE]] \r\nOutside,\r\n \r\n##ENDIF"
    FALSE]]
        wall.Outside_Boundary_Condition =  'Outside'
        wall.Sun_Exposure = "## IF EVAL[#[Layout[] EQS TRUE] AND #[Floor[] EQS TRUE]]\r\nNoSun,\r\n## ELIF EVAL[#[Layout[] EQS FALSE] AND #[Floor[] EQS FALSE]] \r\nSunExposed,\r\n \r\n##ENDIF"
    'SunExposed'
        wall.Wind_Exposure = "## IF EVAL[#[Layout[] EQS TRUE] AND #[Floor[] EQS TRUE]]\r\nNoWind,\r\n## ELIF EVAL[#[Layout[] EQS FALSE] AND #[Floor[] EQS FALSE]] \r\nWindExposed,\r\n \r\n##ENDIF"
'WindExposed'
        ## ENDIF

As I say, You'll need to set up the IF conditions as you need them to be, but something like this is untested but I think it should work, at the expense of being quite unreadable. I think there's scope has worked for some kind of extension to Eppy here to generate EPMacro code.me in the past when trying to combine jEPlus and Eppy.