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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 input_on_stderr(prompt='', default=None, convert=None):
 """Output a string to stderr and wait for input. Args: prompt (str):
 the message to display. default: the default value to return if the user leaves the field empty convert (callable):
 a callable to be used to convert the value the user inserted. If None, the type of ``default`` will be used. """


    print(prompt, end='', file=sys.stderr)
    value = builtins.input()
    return _convert(value, default, convert)