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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 show(all_keys):
 """Show the contents of the config file."""

    if not config_file_exists():
        echo_info('No config file found! Please try `ddev config restore`.')
    else:
        if all_keys:
            echo_info(read_config_file().rstrip())
        else:
            echo_info(read_config_file_scrubbed().rstrip())