Executing sensors command (lm-sensor) in Lua - bash

Question

I originally have this Lua script
function temp_watch()
warn_value=60
crit_value=80
temperature=tonumber(conky_parse("${hwmon 1 temp 1}"))
if cpu_tmp<warn_value then
settings_table[1]['fg_colour']=normal
elseif cpu_tmp<crit_value then
settings_table[1]['fg_colour']=warn
else
settings_table[1]['fg_colour']=crit
end
end
but for some reason, hwmon 1 temp 1 is just stuck reporting 25C. For this reason I switched to sensors. In conky I am executing it using this:
${exec sensors | grep 'Package id 0' | cut -d ' ' -f 5 | cut -c 2,3,4,5,6,7}
I tried using this solution: https://unix.stackexchange.com/questions/666250/how-to-use-conky-variable-with-external-command. Basically, replacing the temperature=tonumber... to
temperature=tonumber(conky_parse("${eval $${exec sensors | grep 'Package id 0' | cut -d ' ' -f 5 | cut -c 2,3,4,5,6,7}}"))
I also tried this: is it possible to pipe output from commandline to lua?. Replaced temperature=tonumber... to
local cpu_tmp = io.popen("exec sensors | grep 'Package id 0' | cut -d ' ' -f 5 | cut -c 2,3,4,5,6,7")
temperature=tonumber(cpu_tmp)
Both outputted this error:
llua_do_call: function conky_main execution failed: /home/joe/conky/conky-grapes/rings-v2_gen.lua:530: attempt to compare nil with number
am I missing some variable conversion or is there any other syntax to execute bash in lua?
Thanks in advance :-)

Answer 1

lua.org gave me an answer. The Complete I/O Model.
local file= io.popen("sensors -u | awk '/temp1_input:/ {print $2; exit}'")
local temperature = tonumber(file:read('*a'))
<SOME CODE HERE>
file:close()
end
It is not elegant but it seems to work. I will be running the lua script for quite some time to ensure it wont have that too many open files error
Many thanks to #Fravadona for pointing me in the right direction :-)