28 Aug admin

Python Collections (Arrays)

There are four collection data types in the Python programming language:

  • List is a collection which is ordered and changeable. Allows duplicate members.
  • Tuple is a collection which is ordered and unchangeable. Allows duplicate members.
  • Set is a collection which is unordered and unindexed. No duplicate members.
  • Dictionary is a collection which is unordered, changeable and indexed. No duplicate members.

List

A list is a collection which is ordered and changeable. In Python lists are written with square brackets.

alist = [“america”, “india”, “japan”]
print(alist)
Output- 

['america', 'india', 'japan']

Access Items

You access the list items by referring to the index number:

alist = [“apple”, “banana”, “cherry”]
print(alist[2])

output:-cherry