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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 _param_deprecation_warning(schema, deprecated, context):

 """Raises warning about using the 'old' names for some parameters.
 
 The new naming scheme just has two underscores on each end of the word for consistency
 """

    for i in deprecated:
        if i in schema:
                msg = 'When matching {ctx}, parameter {word} is deprecated, use __{word}__ instead'
                msg = msg.format(ctx = context, word = i)
                warnings.warn(msg, Warning)