User FAQs

1) How can you concatenate two lists in Python?
Using the +operator or the extend() method.

a = [1, 2, 3] 
b = [4, 5, 6] 

res = a + b 
print(res)     ' [1, 2, 3, 4, 5, 6]  
a.extend(b) 
print(a)       ' [1, 2, 3, 4, 5, 6]  

2) Can you copy a List in Python by simply writing: list2 = list1?
No, because: list2 will only be a reference to list1, and changes made in list1 will automatically also be made in list2.
To make a copy of a list, you can use copy() or the list() method.