input: Write a python function to find all occurrences of an email using regex.
  assert find_emails('Hello! My name is John and my email is john@example.com.') == ['john@example.com']
  assert find_emails('Contact us at support@company.com or sales@company.com.') == ['support@company.com', 'sales@company.com']
  assert find_emails('No emails here!') == []
output: import re
  
  def find_emails(text):
      return re.findall(r'\b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Z|a-z]{2,}\b', text)