Showing posts with label Python online coaching. Show all posts
Showing posts with label Python online coaching. Show all posts

Saturday, November 24, 2018

Difference between Tuple and List in Python-tccicomputercoaching.com

Definition

Tuple and List are used to store data in Python Language.

Tuple: A tuple is a collection of values and it is declared using parentheses. However, we can also use a tuple packing to do the same, and unpacking to assign its values to a sequence.

Lists: Unlike in C++, we don’t have arrays to work with in Python . Here, we have a list instead.


· Mutability

o A List is Mutable
o B Tuple is Immutable

· In built Methods:

o Following Methos can apply to List append(), insert(), remove(), pop(), clear(), sort(), and reverse().
o But not applicable to Tuple.

· Inside Storage

o We can store tuples in a list when we want to. For example,
o [(1, ‘ABC’), (2, ‘DEF’), (3, ‘GHI’)]

o Lists in a Tuple

o Likewise, we can also use a tuple to store lists. Let’s see how.

· Use:

o >>> mytuple=([1,2],[3,4],[5,6])
o Use a tuple when you know what information goes in the container that it is. For example, when you want to store a person’s credentials for your website.
o    >>> person=('ABC','admin','12345')
o But when you want to store similar elements, like in an array in C++, you should use a list.
o    >>> groceries=['bread','butter','cheese']


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