How to declare and add items to an array in Python?

Question

I'm trying to add items to an array in python.

I run

array = {} 

Then, I try to add something to this array by doing:

array.append(valueToBeInserted) 

There doesn't seem to be a .append method for this. How do I add items to an array?

Answer 1

{} represents an empty dictionary, not an array/list. For lists or arrays, you need [].

To initialize an empty list do this:

my_list = [] 

or

my_list = list() 

To add elements to the list, use append

my_list.append(12) 

To extend the list to include the elements from another list use extend

my_list.extend([1,2,3,4]) my_list --> [12,1,2,3,4] 

To remove an element from a list use remove

my_list.remove(2) 

Dictionaries represent a collection of key/value pairs also known as an associative array or a map.

To initialize an empty dictionary use {} or dict()

Dictionaries have keys and values

my_dict = {'key':'value', 'another_key' : 0} 

To extend a dictionary with the contents of another dictionary you may use the update method

my_dict.update({'third_key' : 1}) 

To remove a value from a dictionary

del my_dict['key']