Cartesian to Polar

import numpy as np

a = np.random.random((5, 2))

print(a)

[[0.41729967 0.55329891]
 [0.31500693 0.89985254]
 [0.90188216 0.05144744]
 [0.71672937 0.65142741]
 [0.29806038 0.55515573]]

b, c = a[:, 0], a[:, 1]

print(b)

[0.41729967 0.31500693 0.90188216 0.71672937 0.29806038]

print(c)

[0.55329891 0.89985254 0.05144744 0.65142741 0.55515573]

d = np.sqrt(b**2 + c**2)

print(d)

[0.69302142 0.95339601 0.90334837 0.96853428 0.63010941]

# 
e = np.arctan2(c, b)

print(e)

[0.92461076 1.23406355 0.05698277 0.73770448 1.07807011]