Python Programming Lab

B.Tech.(III Sem.) 23CSS1-PYTHON PROGRAMMING 

Prerequisites: Introduction to Programming

Course Objectives: The main objectives of the course are to

1. Introduce core programming concepts of Python programming language.

2. Demonstrate about Python data structures like Lists, Tuples, Sets and dictionaries

3. Implement Functions, Modules and Regular Expressions in Python Programming and to

create practical and contemporary applications using these

Course Outcomes: After learning the contents of this course, the student must be able to

CO1: Implement the core programming concepts of Python programming language.

       (Apply-L3)

CO2: Demonstrate about Python data structures like Lists, Tuples, Sets and

     Dictionaries. (Apply-L3)

CO3: Implement Functions, Modules and Regular Expressions in Python Programming and

      to create practical and contemporary applications. (Apply-L3)

CO4: Improve individual/team work skills, communication & report writing skills with

ethical values

SYLLABUS:

UNIT-I:

History of Python Programming Language, Thrust Areas of Python, Installing Anaconda Python Distribution, Installing and Using Jupyter Notebook. Parts of Python Programming Language: Identifiers, Keywords, Statements and Expressions, Variables, Operators, Precedence and Associativity, Data Types, Indentation, Comments, Reading Input, Print Output, Type Conversions, the type () Function and Is Operator, Dynamic and Strongly Typed Language. Control Flow Statements: if statement, if-else statement, if...elif…else, Nested if statement, while Loop, for Loop, continue and break Statements, Catching Exceptions Using try and except Statement.

Sample Experiments:  Solution

1. Write a program to find the large statement among three Numbers.

2. Write a Program to display all prime numbers within an interval

3. Write a program to swap two numbers without using a temporary variable.

4. Demonstrate the following Operators in Python with suitable examples.

i) Arithmetic Operators           ii) Relational Operators

iii) Assignment Operators       iv) Logical Operators

v) Bit wise Operators              vi) Ternary Operator   vii) Membership Operators

viii) Identity Operators

 5. Write a program to add and multiply complex numbers

6. Write a program to print multiplication table of a given number.

UNIT-II

Functions: Built-In Functions, Commonly Used Modules, Function Definition and Calling the function, return Statement and void Function, Scope and Lifetime of Variables, Default Parameters, Keyword Arguments, *args and **kwargs, Command Line Arguments.Strings: Creating and Storing Strings, Basic String Operations, Accessing Characters in String by Index Number, String Slicing and Joining, String Methods, Formatting Strings. Lists: Creating Lists, Basic List Operations, Indexing and Slicing in Lists, Built-In Functions Used on Lists, List Methods, del Statement.

Sample Experiments: Sample Solutions for Guidance 

1. Write a program to define a function with multiple return values.

2. Write a program to define a function using default arguments.

3. Write a program to find the length of the string without using any library functions.

4. Write a program to check if the sub string is present in a given string or not.

5. Write a program to perform the given operations on a list:

  i. Addition           ii. Insertion         iii. slicing

6. Write a program to perform any 5 built-in functions by taking any list.

UNIT-III:

Dictionaries: Creating Dictionary, Accessing and Modifying key: value Pairs in Dictionaries, Built-In Functions Used on Dictionaries, Dictionary Methods, del Statement. Tuples and Sets: Creating Tuples, Basic Tuple Operations, tuple() Function, Indexing and Slicing in Tuples, Built-In Functions Used on Tuples, Relation between Tuples and Lists, Relation between Tuples and Dictionaries, Using zip() Function, Sets, Set Methods, Frozen Set.

Sample Experiments:  Solutions for Guidance  

1. Write a program to create tuples (name, age, address, college) for at-least two members and concatenate the tuples and print the concatenated tuples.

2. Write a program to count the number of vowels in a string (No control flow allowed).

3. Write a program to check if a given key exists in a dictionary or not.

4. Write a program to add a new key-value pair to an existing dictionary.

5. Write a program to sum all the items in a given dictionary. 

UNIT-IV:

Files: Types of Files, Creating and Reading Text Data, File Methods to Read and Write Data, Reading and Writing Binary Files, Pickle Module, Reading and Writing CSV Files, Python os and os.path Modules. Object-Oriented Programming: Classes and Objects, Creating Classes in Python, Creating Objects in Python, Constructor Method, Classes with Multiple Objects, Class Attributes Vs Data Attributes, Encapsulation, Inheritance, Polymorphism.

Sample Experiments. 

1. Write a program to sort words in a file and put them in another file. The output file should have only lower-case words, so any upper-case words from

     source must be lowered.

2. Python program to print each line of a file in reverse order.

3. Python program to compute the number of characters, words and lines in a file.

4. Write a program to create, display, append, insert and reverse the order of the items in the array.

5. Write a program to add, transpose and multiply two matrices.

6. Write a Python program to create a class that represents a shape. Include methods to calculate its area and perimeter. Implement subclasses for different shapes like circle, triangle, and square.

UNIT-V:

Introduction to Data Science: Functional Programming, JSON and XML in Python, NumPy with Python, Pandas.

Sample Experiments:

1. Python program to check whether a JSON string contains complex objector not.

2. Python Program to demonstrate NumPy arrays creation using array() function.

3. Python program to demonstrate use of ndim, shape, size, dtype.

4. Python program to demonstrate basics licing, integer and Boole an indexing.

5. Python program to find min, max, sum, cumulative sum of array

6. Create a dictionary with at least five keys and each key represent value as a list where this

  list contains at least ten values and convert this dictionary as a pandas data frame and

explore the data through the data frame as follows:

7. Apply head() function to the pandas data frame

8. Perform various data selection operations on Data Frame

9. Select any two columns from the above data frame, and observe the change in one attribute

    with respect to other attribute with scatter and plot operations in matplotlib