top of page
Python Array
The array is a data structure that holds more than one value at a time.
In the core python list also treated as an array.
In data science, Numpy is used as an array.
Basic python syntax to declare an array in python:
>>> a = arr.array(‘d’, [‘a’, ‘b,’, ‘c’])
The first argument shows an array ‘data-type’ and second is a list of values.
List of array data types
Here we create a simple list of array data types:
-
I, i, h, H - Use for “int”, size is 3(in bytes
-
f - Use for “float”, size is 4(in bytes)
-
d - Use for “float”, size is 4(in bytes)
How to access array element
We can access array element simple way – as per index value
>>> a[0]
Finding the length of array
Array length can be find using the len() funcition.
>>> x = len(a)
Array with loop
Element of array can be find using the loop, like list or dict.
>>> for x in a:
print(x)
Adding the element to the array
Element can be added in the array using the "append"
Example:
>>> a.append("i")
Removing the element from array array
Element can be removed from the array using the pop()
Example:
>>> a.pop(1)
It removes the second element from the array.
We can also remove the element from the array using "remove"
>>> a.remove("b")
Other array methods which are useful and most important
Here the list of array methods which is most important:
append(), clear(), copy(), count(), extend(), index(), insert(), sort(), reverse(), etc.
bottom of page