python - TypeError: 'float' object is not callable -


i getting "typeerror: 'float' object not callable.

here code:

from matplotlib.pylab import * def f(x,t):     return (exp(-(x-3*t)**2) )*sin(3*pi(x-t))   x = linspace(-4, 4, 8)    y = zeros(len(x))   in xrange(len(x)):     y[i] = f(x[i],0)  plot(x, y) show()

pi isn't function, since didn't use * indicate want multiply it, looks using one.


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