如何将列转置为行？

def transpose_columns_to_rows(data):
    transposed_data = []
    num_columns = len(data[0])
    num_rows = len(data)
    
    for i in range(num_columns):
        new_row = []
        for j in range(num_rows):
            new_row.append(data[j][i])
        transposed_data.append(new_row)
    
    return transposed_data

# 示例数据
data = [[1, 2, 3],
        [4, 5, 6],
        [7, 8, 9]]

transposed_data = transpose_columns_to_rows(data)
print(transposed_data)

[[1, 4, 7],
 [2, 5, 8],
 [3, 6, 9]]