<filename>new.py
cut = [i for i in range(30)]
print(cut)

data_A = [[data_A_i]for i in range(4)]
print(data_A)

<filename>new.py
cut = [i for i in range(30)]
print(cut)

data_A = [[data_A_i]for i in range(4)]
print(data_A)
