Answer:
# kelvin_to_celsius function is defined
# it has value_kelvin as argument
def kelvin_to_celsius(value_kelvin):
    # value_celsius is initialized to 0.0
    value_celsius = 0.0
    
    # value_celsius is calculated by
    # subtracting 273.15 from value_kelvin
    value_celsius = value_kelvin - 273.15
    # value_celsius is returned
    return value_celsius
    
# celsius_to_kelvin function is defined
# it has value_celsius as argument
def celsius_to_kelvin(value_celsius):
    # value_kelvin is initialized to 0.0
    value_kelvin = 0.0
    
    # value_kelvin is calculated by
    # adding 273.15 to value_celsius
    value_kelvin = value_celsius + 273.15
    # value_kelvin is returned
    return value_kelvin
    
value_c = 0.0
value_k = 0.0
value_c = 10.0
# value_c = 10.0 is used to test the function celsius_to_kelvin
# the result is displayed
print(value_c, 'C is', celsius_to_kelvin(value_c), 'K')
value_k = 283.15
# value_k = 283.15 is used to test the function kelvin_to_celsius
# the result is displayed
print(value_k, 'is', kelvin_to_celsius(value_k), 'C')
Explanation:
Image of celsius_to_kelvin function used as guideline is attached
Image of program output is attached.