ValueError: The truth value of an array with more than one element is ambiguous.

[Eliza5]

I am working on a simple code, for calculating Re number. The problem is that I want to check every number in Re vector, although I do not know how to do it.
The error I am getting is: ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.all()

The code:

import numpy as np
from CoolProp.CoolProp import PropsSI
from numpy import*

v = [1,2,3,4,5]
Tz = 42 + 273
v = 4e-2 # [m]
s = 2e-2 # [m]
#------------------------------------------------------------------------------------

npv = np.array(v)

A = v*s
ob = 2*(s + v)
Dh = (4*A)/ ob
roZ = PropsSI('D', 'P', 101325, 'T', Tz, 'Air')
din_vis= PropsSI('V', 'P', 101325, 'T', Tz, 'Air')
kin_vis = din_vis/roZ

Re= (npv *Dh )/ kin_vis
Pr = PropsSI('PRANDTL', 'P', 101325, 'T', Tz, 'Air')
print ('Re:',Re)
print ('Pr:',Pr)

if Re < 2300:
    print('Laminar flow, Re = ', Re)
elif Re > 10000 and Pr >= 0.6 and Pr <= 160:
    print('Turbolent flow, Re = ', Re)
    print('Pr = ', Pr)
else:
    print(' Re = ', Re)
    print('Pr = ', Pr)

Any help is much appreciated.