python统计出人名的出现次数

[['李', '盈', '莹'], ['李', '盈', '莹'], ['朱', '婷'], ['朱', '婷'], ['李', '盈', '莹'], ['张', '常', '宁'], ['张', '常', '宁'], ['孙', '玥'], ['诸', '韵', '颖']]
这是一个python列表，我想要实现的结果就是 李莹莹：3次，朱婷：2次
这样子统计出人名的出现次数，并且数据以人名加次数保存

names_list = [['李', '盈', '莹'], ['李', '盈', '莹'], ['朱', '婷'], ['朱', '婷'], ['李', '盈', '莹'], ['张', '常', '宁'], ['张', '常', '宁'], ['孙', '玥'], ['诸', '韵', '颖']]
name_counts = {}

for names in names_list:
    full_name = ''.join(names)
    if full_name in name_counts:
        name_counts[full_name] += 1
    else:
        name_counts[full_name] = 1

for name, count in name_counts.items():
    print(name + ':' + str(count) + '次')