コード
data.csv
A0,B0,C0,D0
A1,B1,C1,D1
A2,B2,C2,D2
A3,B3,C3,D3
A4,B4,C4,D4
A5,B5,C5,D5
multi_array.py
path = "data.csv"
data = []
with open(path) as f:
for line in f:
line = line.replace('\n','') #末尾の\nの削除
line = line.split(",") #分割
data.append(line)
print(data)
結果
[['A0', 'B0', 'C0', 'D0'], ['A1', 'B1', 'C1', 'D1'], ['A2', 'B2', 'C2', 'D2'], ['A3', 'B3', 'C3', 'D3'], ['A4', 'B4', 'C4', 'D4'], ['A5', 'B5', 'C5', 'D5']]