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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 calc_bins(n, min_val, max_val, h=None, binwidth=None):
 """ Calculate number of bins for the histogram """

    if not h:
        h = max(10, math.log(n + 1, 2))
    if binwidth == 0:
        binwidth = 0.1
    if binwidth is None:
        binwidth = (max_val - min_val) / h
    for b in drange(min_val, max_val, step=binwidth, include_stop=True):
        if b.is_integer():
            yield int(b)
        else:
            yield b