Python - TypeError: range() integer step argument expected, got float.

def frange1d(start, end, inc):

    for n in range(start,end,inc):

        yield n

gen=frange1d(0.0,3.0,0.25)

print gen.next()

print gen.next()

print gen.next()

import numpy as np

for n in np.arange(0,3,0.1):

    print n