Removing elements from a list and modifying another list in Python

Question

I have a list CB containing many sublists with numpy arrays. I want to identify the empty lists and generate a new list J_new by removing the specific element. I present the current and expected output.

import numpy as np
arJ_new=[]
CB = [[[]], [np.array([9.75016872e-05]), np.array([0.00019793]), np.array([0.0001007])], [np.array([0.0002704])]]
J=[32,1,35]

for i in range(0,len(CB)):
    if len(CB[i])!=0:
        J_new=J[i]
        arJ_new.append(J_new)
        J_new=list(arJ_new)
print(J_new)

The current output is

[32, 1, 35]

The expected output is

[1,35]

Asked By: rajunarlikar123

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Source

Answer 1

By means of numpy (check size) filtering:

j_new = [J[i] for i, a in enumerate(CB) if np.array(a).size != 0]

[1, 35]

Answered By: RomanPerekhrest

Removing elements from a list and modifying another list in Python

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