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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 easeInOutExpo(n):
 """An exponential tween function that accelerates, reaches the midpoint, and then decelerates. Args: n (float):
 The time progress, starting at 0.0 and ending at 1.0. Returns: (float) The line progress, starting at 0.0 and ending at 1.0. Suitable for passing to getPointOnLine(). """

    _checkRange(n)
    if n == 0:
        return 0
    elif n == 1:
        return 1
    else:
        n = n * 2
        if n < 1:
            return 0.5 * 2**(10 * (n - 1))
        else:
            n -= 1
            # 0.5 * (-() + 2)
            return 0.5 * (-1 * (2 ** (-10 * n)) + 2)