How to use 'how to take float input in python' in Python

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def input_float(prompt=''):
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    """Ask for a human float input.
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    Args:
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        prompt (string): Text to prompt as input.
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    """
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    # try:
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    #     return raw_input(prompt)
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    # except NameError:
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    #     return input(prompt)
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    while True:
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        try:
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            float_input = float(input(prompt))
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        except ValueError:
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            print('Please enter a float.\n')
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            continue
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        else:
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            break
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    return float_input