– matplotlib
– numpy

import js

def calculate_height(event=None):
father_height_input = js.document.getElementById(‘fatherHeight’)
mother_height_input = js.document.getElementById(‘motherHeight’)
gender_select = js.document.getElementById(‘gender’)
result_div = js.document.getElementById(‘result’)

try:
father_height = float(father_height_input.value)
mother_height = float(mother_height_input.value)
gender = gender_select.value

if father_height <= 0 or mother_height <= 0: result_div.innerHTML = "Please enter heights greater than zero.”
return

if gender not in [‘boy’, ‘girl’]:
result_div.innerHTML = “Please select the child’s gender.”
return

if gender == ‘boy’:
predicted_height = (father_height + mother_height + 13) / 2
else:
predicted_height = (father_height + mother_height – 13) / 2

result_div.innerHTML = f”The predicted adult height is {predicted_height:.1f} cm.”
except ValueError:
result_div.innerHTML = “Please enter valid numerical values.”

# Add event listener to the button
calculate_button = js.document.getElementById(‘calculateButton’)
calculate_button.addEventListener(‘click’, calculate_height)