List_a = [1, 0, 0, 0, 1, 1]

I want to insert 3 into index 1

How it should look:

New_List_a = [1, [0,3], 0, 0, 1, 1]

Any ideas?

CodePudding user response：

List_a = [1, 0, 0, 0, 1, 1]
List_a[1] = [List_a[1], 3]
print(List_a)  # [1, [0, 3], 0, 0, 1, 1]

CodePudding user response：

List_a = [1, 0, 0, 0, 1, 1]
# New_List_a = [1, [0,3], 0, 0, 1, 1]
l=[]
l.append(List_a[1])

for i in range(0,len(List_a)):
    if(i==1): # real signature unknown
        l.append(3)
        List_a[i]=l
        break

print(List_a)