Problems with numpy.any() for condition checking

I want to start an if condition checking all elements in a previously defined array, for example:

import numpy as np

f = np.zeros(5)
if f[i]<100
   #do something

where i is supposed to check all the elements of f. I believe there is an easy way to do this in python instead of creating a loop searching all elements, any help would be appreciated. Thanks in advance.

Edit: I tried to use the numpy.any() function but it seems is not working the way I thought, for example:

import numpy as np
z = np.array([1, 2000, 30000])
if np.any(z)>2:
   print('Something')

But the results return False