(cfg)
Clean up blank lines.

    This functions makes the configuration look clean and
    handwritten - consecutive empty lines and empty lines at
    the start of the file are removed, and one is guaranteed
    to be at the end of the file.
Clean up blank lines.
Clean up blank lines .
def tidy(cfg):
    """Clean up blank lines.

    This functions makes the configuration look clean and
    handwritten - consecutive empty lines and empty lines at
    the start of the file are removed, and one is guaranteed
    to be at the end of the file.
    """

    if isinstance(cfg, compat.RawConfigParser):
        cfg = cfg.data
    cont = cfg._data.contents
    i = 1
    while i < len(cont):
        if isinstance(cont[i], LineContainer):
            tidy_section(cont[i])
            i += 1
        elif (isinstance(cont[i-1], EmptyLine) and
              isinstance(cont[i], EmptyLine)):
            del cont[i]
        else:
            i += 1

    # Remove empty first line
    if cont and isinstance(cont[0], EmptyLine):
        del cont[0]

    # Ensure a last line
    if cont and not isinstance(cont[-1], EmptyLine):
        cont.append(EmptyLine())
def tidy ( cfg ) : if isinstance ( cfg , compat . RawConfigParser ) : cfg = cfg . data cont = cfg . _data . contents i = 1 while i < len ( cont ) : if isinstance ( cont [ i ] , LineContainer ) : tidy_section ( cont [ i ] ) i += 1 elif ( isinstance ( cont [ i - 1 ] , EmptyLine ) and isinstance ( cont [ i ] , EmptyLine ) ) : del cont [ i ] else : i += 1 # Remove empty first line if cont and isinstance ( cont [ 0 ] , EmptyLine ) : del cont [ 0 ] # Ensure a last line if cont and not isinstance ( cont [ - 1 ] , EmptyLine ) : cont . append ( EmptyLine ( ) )