[Python] Analysis of a tapering function

On Window function - Wikipedia tapering functions are plotted using two different styles. One shows curve (samples) and the other Fourier transform (bins).

I've prepared two tapering functions based on Tanh() -functions.

def tanh_taper(N, x, c):
if x < 0:
v = 0.0
if 0 <= x <= N/2:
v = math.tanh(c * x)
elif N/2 < x < N:
v = math.tanh(-c * x + N * c)
else:
v = 0.0
return v

def tanh_taper_inverted(N, x, c):
if x < 0:
v = 1.0
elif 0 <= x <= N/2:
v = math.tanh(-c * x) + 1.0
elif N/2 < n < N:
v = math.tanh(c * x - N * c) + 1.0
else:
v = 1.0
return v


How do I get the Fourier transform -type plot (using Python)?

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