Works in the template but does not pass for the sensor yaml

Configuration
1

this works in the template in dev tools but will not pass the configuration test

it seems to have issues with the straight brackets tried other brackets to no avail

   - platform: template
     sensors:
       main_shower_temp:
         unit_of_measurement: "°F"
         value_template: 
          {{ '%.f' | format(state_attr('climate.main_shower','current_temperature') | float ) }}       
         friendly_name: "Main Shower Temperature"
2

Hi, there is an error in your yaml syntax, try:

   - platform: template
     sensors:
       main_shower_temp:
         unit_of_measurement: "°F"
         value_template: 
           "{{ '%.f' | format(state_attr('climate.main_shower','current_temperature') | float ) }}"
         friendly_name: "Main Shower Temperature"

(double quotes around the template)

3

Templates only need to be quoted if they are on a single line. Multi-line templates should not be inside quotes. They do however need the multi-line indicator symbol, > which was missing. So this

         value_template: >
          {{ '%.f' | format(state_attr('climate.main_shower','current_temperature') | float ) }}

Or this:

         value_template: "{{ '%.f' | format(state_attr('climate.main_shower','current_temperature') | float ) }}"
4

The top one worked the bottom one did not though I did not understand the greater than symbol and quotes reasons in the template have e little better understanding now though still far from being a programmer LOL

5

Check this out: http://yaml-multiline.info/