我有一个列表,如
[['2 Cups Fresh breadcrumbs'], ['1/3 Cup Parmesan cheese, grated'], ['For frying Vegetable Oil']]
我想从列表元素中获取数字,例如在获取列表之后应该看起来像这样
[['2', 'Cups Fresh breadcrumbs'], ['1/3', 'Cup Parmesan cheese, grated'], ['','For frying Vegetable Oil']]
我试图从列表中的字符串解析数字.
语言 - 蟒蛇