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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def Indentation( logical_line, previous_logical, indent_level, previous_indent_level ):
 """Use two spaces per indentation level."""

  comment = '' if logical_line else ' (comment)'
  if indent_level % 2:
    code = 'YCM111' if logical_line else 'YCM114'
    message = ' indentation is not a multiple of two spaces' + comment
    yield 0, code + message
  if ( previous_logical.endswith( ':' ) and
       ( indent_level - previous_indent_level != 2 ) ):
    code = 'YCM112' if logical_line else 'YCM115'
    message = ' expected an indented block of {} spaces{}'.format(
      previous_indent_level + 2, comment )
    yield 0, code + message