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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 format_float(value):
 # not used """Modified form of the 'g' format specifier. """

    string = "{:g}".format(value).replace("e+", "e")
    string = re.sub("e(-?)0*(\d+)", r"e\1\2", string)
    return string