code: def upper_camel(string, prefix='', suffix=''):
      
  
      return require_valid(append_underscore_if_keyword(''.join(
          upper_case_first_char(word)
          for word in en.words(' '.join([prefix, string, suffix])))
      ))
docs: Generate a camel-case identifier with the first word capitalised.
      Useful for class names.
  
      Takes a string, prefix, and optional suffix.
  
      `prefix` can be set to `''`, though be careful - without a prefix, the
      function will throw `InvalidIdentifier` when your string starts with a
      number.
  
      Example:
          >>> upper_camel("I'm a class", prefix='')
          'IAmAClass'