如何获取元组列表并将元组从字符串更改为整数

Question

I have the code

l = [('1',['3','1','2']),('2',['4','5','2'])]

How do I make it:

l = [(1,[3,1,2]),(2,[4,5,2])]

Answer 1

You can use int function while iterating using list comprehension

r = [tuple([int(i),[int(k) for k in j]]) for i,j in l]

Answer 2

This can be generalised using recursion:

def to_ints(item):
    if isinstance(item, list):
        return [to_ints(e) for e in item]
    elif isinstance(item, tuple):
        return tuple(to_ints(e) for e in item)
    else:
        return int(item)

Answer 3

A simple approach is to remove the quotes and parse it back to a list

 l = eval(str(l).replace("'", ""))