访问元组列表中的元素

将列表理解用作:

lst = [('A', 1), ('B', 2), ('C', 3)] 
l1 = [elt[0] for elt in lst]
l2 = [elt[1] for elt in lst]

l1, l2 = [], []
for elt in lst:
    l1.append(elt[0])
    l2.append(elt[1])

zipped = [("a", 1), ("b", 2), ("C", 3)]    
unzipped_object = zip(*zipped)
unzipped_list = list(unzipped_object)
print(unzipped_list)

输出:

[('a','b','C'),(1,2,3)]

另一个优点是这个版本使用一个for循环。

lst = [('A', 1), ('B', 2), ('C', 3)] 

list1 = []
list2 = []
for couple in lst:
    list1.append(couple[0])
    list2.append(couple[1])

print(list1)
print(list2)

你可以用for循环。

lst = [('A', 1), ('B', 2), ('C', 3)]
l1 = []
l2 = []
for tup in lst:
    l1.append(tup[0])
    l2.append(tup[1])