find() applied on multidimensional arrays

Hello,

Here under a question that has probably already been
asked:

I would like to apply the find() function on a bidimensional
array and receive as output the bidimensional indices for the elements matching
the condition. This is easy in Matlab but doesn’t seem to be possible with
Python.

Here is a short example (in Matlab code) of what I
would like to have:

z=rand(3,3)

z =

0.9501   

0.4860 0.4565

0.2311   

0.8913 0.0185

0.6068   

0.7621 0.8214

[i,j]=find(z<0.5)

i =

 2

 1

 1

 2

j =

 1

 2

 3

 3

A solution for me?

Thank you,

Dimitri D’Or