如何自动从另一个列表的元素中创建 python 中的列表

Question

I have a list X of n number of elements, so I want to generate a list of each element from the list X.

X = [ Task_1 , Task_2 , ... ]
for ele in X:
    ele = []

Now, if I use the following code, It gives me an error.

print(len(Task_1))
Output:
Task_1 is not defined

Answer 1

Use a dictionary instead:

X = ['Task_1', 'Task_2', 'Task_3']

container = dict()
for item in X:
    container[item] = list()

Afterwards, you'll have eg

container["Task_1"]

as a list. The other way would involve globals()[item] = list() in the loop but this really messes up your namespace.

Answer 2

Although I do not recommend this, but you can:

X = ['Task_1', 'Task_2', 'Task_3']

for item in X:
    globals()[item] = []
    
print(Task_1)
print(len(Task_1))

print(Task_2)
print(len(Task_2))

You can make a nested list, or dictionary instead.