code: def _to_camelcase(input_string):
      ''' a helper method to convert python to camelcase'''
      camel_string = ''
      for i in range(len(input_string)):
          if input_string[i] == '_':
              pass
          elif not camel_string:
              camel_string += input_string[i].upper()
          elif input_string[i-1] == '_':
              camel_string += input_string[i].upper()
          else:
              camel_string += input_string[i]
      return camel_strinf _to_camelcase(input_string):
      ''' a helper method to convert python to camelcase'''
      camel_string = ''
      for i in range(len(input_string)):
          if input_string[i] == '_':
              pass
          elif not camel_string:
              camel_string += input_string[i].upper()
          elif input_string[i-1] == '_':
              camel_string += input_string[i].upper()
          else:
              camel_string += input_string[i]
      return camel_string
docs: a helper method to convert python to camelcase