[python] How to declare and add items to an array in Python?

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?

Arrays (called list in python) use the [] notation. {} is for dict (also called hash tables, associated arrays, etc in other languages) so you won't have 'append' for a dict.

If you actually want an array (list), use:

array = []
array.append(valueToBeInserted)

I believe you are all wrong. you need to do:

array = array[] in order to define it, and then:

array.append ["hello"] to add to it.

Just for sake of completion, you can also do this:

array = []
array += [valueToBeInserted]

If it's a list of strings, this will also work:

array += 'string'

You can also do:

array = numpy.append(array, value)

Note that the numpy.append() method returns a new object, so if you want to modify your initial array, you have to write: array = ...

In some languages like JAVA you define an array using curly braces as following but in python it has a different meaning:

Java:

int[] myIntArray = {1,2,3};
String[] myStringArray = {"a","b","c"};

However, in Python, curly braces are used to define dictionaries, which needs a key:value assignment as {'a':1, 'b':2}

To actually define an array (which is actually called list in python) you can do:

Python:

mylist = [1,2,3]

or other examples like:

mylist = list()
mylist.append(1)
mylist.append(2)
mylist.append(3)
print(mylist)
>>> [1,2,3]

No, if you do:

array = {}

IN your example you are using array as a dictionary, not an array. If you need an array, in Python you use lists:

array = []

Then, to add items you do:

array.append('a')