Python Sequence | Python Lists | Python Sets & Dictionary | Python Strings | Python Training | Edureka

www.edureka.co/pythonEDUREKA PYTHON CERTIFICATION TRAINING
Python Sequences

➢ What are sequences?
➢ Sequence Operations
➢ Types of Sequences in Python
➢ Lists
➢ Tuples
➢ Strings
➢ Sets
➢ Dictionaries
Agenda

What are Sequences?

What Are Sequences?
➢ Sequences are containers with items that are accessible by indexing or slicing.
➢ The built-in len function takes any container as an argument and returns the number of items in the container.
Sequence of Cars

Sequences Operations

Sequence Operations
Sequences of Cars
Concatenation Repetition Membership Testing Slicing Indexing

Sequence Concatenation and Repetition
Sequence of Cars
Concatenation Repetition

Sequence Membership Testing
Sequence of Cars
Membership Testing
Not a member Is a member

Sequence Indexing
Sequence of Cars
Indexing
Index 0 Index 1 Index 2 Index 3 Index 4 Index 5 Index 6 Index 7

Sequence Slicing
Sequence of Cars
Slicing
[ index 1 – index 4 ]

Types of Sequences in Python

Sequences In Python
Lists
Tuples
Strings
Sets
Dictionaries

Lists

Lists
Fruits = ['Mango', 'Apple', 'Grapes'] List.append(elem)
List.insert(index,elem)
List.extend(list2)
List.index(elem)
List.remove(elem)
List.sort()
List.reverse()
Append
Extend
Insert
Index
Remove
Sort
Reverse
The list is a most versatile datatype available in Python which can be written as a list of comma-separated
values (items) between square brackets. Important thing about a list is that items in a list need not be of
the same type.

Tuples

Tuples
➢ A tuple is a sequence of immutable Python objects.
➢ Tuples are sequences, just like lists. The differences between tuples and lists are, the
tuples cannot be changed unlike lists and tuples use parentheses.
Fruits = ('Mango', 'Apple', 'Grapes‘)
Tuple.index(elem)Index
Tuple.count(elem)Count
Tuple1+Tuple2Concatenation
Tuple[range]Slicing
Tuple * xRepetition

Strings

Strings
➢ We can create them simply by enclosing characters in quotes.
➢ Python treats single quotes the same as double quotes.
Fruits = 'Mango Apple Grapes'
String[range]
Updating
Slicing
Concatenation
Reverse
Repetition
Membership
String[range] + ‘x’
String 1 + String 2
String 1 * x
In, not in
String [:-1]

Sets

Sets
➢ A set contains an unordered collection of unique and immutable objects.
➢ The set data type is, as the name implies, a Python implementation of the
sets as they are known from mathematics.
A BA B
A B
C
(A C) / B (B C) / A
C
Fruits = {'Mango', 'Apple', 'Grapes‘}
Slicing
Add Element
Clear
Copy
Difference
Discard
Remove
Intersection

Dictionaries

Dictionaries
➢ Dictionary is an unordered collection of key-value pairs.
➢ It is generally used when we have a huge amount of data.
Example:
Length
del d [K]
Membership Testing
Key
Value

Session In A Minute
What are Sequences? Lists
Strings Sets
Tuples
Dictionaries

Thank You …
Questions/Queries/Feedback

Python Sequence | Python Lists | Python Sets & Dictionary | Python Strings | Python Training | Edureka

More Related Content

What's hot (20)

Similar to Python Sequence | Python Lists | Python Sets & Dictionary | Python Strings | Python Training | Edureka (20)

More from Edureka! (20)

Recently uploaded (20)

Python Sequence | Python Lists | Python Sets & Dictionary | Python Strings | Python Training | Edureka