连接 Python 中列表列表中的列表

Question

I want to "concatenate" 2 lists of the form [[a], [b], [c], ...] and [[e], [f], [g], ...] to obtain a list [[a,e], [b,f], [c,g], ...] . The lengths of the 2 lists (n lists) will always be the same. How can I do this? I'm new to Python:(

Answer 1

you use zip to iterate through the elements of both list at same time, then add them together (list+list = concatenate the 2 list), and finaly append the result to a third list (concatenated list):

Something like this:

l1, l2 = [['a'], ['b'], ['c']], [['e'], ['f'], ['j']]
concat = []
for i, j in zip(l1, l2):
    concat.append(i + j)
print(concat)