Introduction to Basics of Python

Python is a popular programming language used in a variety of applications, including data analysis, web development, and artificial intelligence. Here's an introduction to the Basics of Python - A Beginners Guide! Whether you're new to programming or looking to brush up on your skills, this video covers the basics of Python programming language. From data types and operators to loops, functions and libraries, you'll get a solid foundation to start coding in Python.

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2. iNTRODUCTION TO PYT HON Python is a high-level programming language that is widely used in various fields, including data science, web development, and artificial intelligence. Some of the key elements of Python include: 01 DATA TYPES 02 VARIABLES 03 OPERATORS 04 CONDITIONAL STATEMENTS 05 LOOPS 06 FUNCTIONS 07 LIBRARIES

3. Data Types: So Many Flavors, So Little Time! In Python, data types are categories of values that determine how the values behave and what operations can be performed on them. Here are some common data types and their examples: TYPES DESCRIPTION EXAMPLES Numeric Represents numerical values 'int' , 'float' , 'complex' Sequence Represents a collection of ordered and indexed values 'list' , 'tuple' , 'range' Text Represents a sequence of characters 'str' Mapping Represents a collection of key-value pairs 'dict' Set Represents a collection of unique elements 'set' , 'frozenset' Boolean Represents a binary truth value 'bool' Binary Represents binary data 'bytes' , ' bytearray ' , ' memoryview '

4. Examples that shows how different data types can be used in Pyt hon :

5. Variables: Party Time! Get Your Data On! A variable in Python is just a name that represents a value, and you can use it to store and manipulate data throughout your program. Let’s understand the same with a small example: In Python, we’ll try to create a variable called "age" and assign a value to it, like this: Now, whenever you need to use that age value in your program, you can just use the variable name "age". For example: The output will be: In this example, the variable "age" is assigned the value 15. Then, the print statement uses the value of the variable "age" to output the string "I am 15 years old." Note: We use the str() function to convert the integer value of "age" into a string, so we can concatenate it with the other strings in the output statement.

6. Operators: Go crazy with Calculations! In Python, operators are symbols or special characters that allow you to perform different kinds of operations on variables and values. Here's a table that summarizes the different types of operators in Python, along with their descriptions and examples: TYPES DESCRIPTION EXAMPLES Arithmetic Operators Used to perform arithmetic operations '2 + 3' returns '5' Comparison Operators Used to compare values '2 < 3' returns 'True' Logical Operators Used to combine and manipulate boolean values 'True and False' returns 'False' Bitwise Operators Used to perform bitwise operations '5 & 3' returns '1' Assignment Operators Used to assign values to variables 'x=5' Identity Operators Used to compare the memory location of two objects 'x is y' returns 'True' Membership Operators Used to check if a value is present in a sequence '2 in [1, 2, 3]' return 'True'

7. Conditional Statements: Be the boss of your code! Conditional statements in allow you to control the flow of your program based on certain conditions. They are used to make decisions in your code, and they help your program to be more flexible and responsive to different inputs. Here's a detailed description along with examples that demonstrates the different types of conditional statements in Python to perform various kinds of checks, such as checking if a number is greater than a certain value, or if it falls within a certain range. When you run this code, you will see the output for each conditional statement. TYPES DESCRIPTION EXAMPLES If statement Executes a block of code if a condition is true 'x=5' <br> 'if x>3:'<br> 'print("x is greater than 3")' If else statement Executes one block of code if a condition is true and another block if it is false 'x=2' <br> 'if x>3: '<br> 'print("x is greater than 3")' <br> 'else:' <br> 'print("x is less than or equal to 3")' elif statement Executes a block of code if a condition is true, and if not, checks another condition 'x = 5' <br> 'if x > 7: ' <br> 'print("x is greater than 7")' <br> 'elif x > 3: '<br> 'print("x is greater than 3 but less than or equal to 7")' <br> 'else:' <br> 'print("x is less than or equal to 3")' nested if statement Executes a block of code if a condition is true, and that block can contain another if statement 'x = 5' < br > 'if x > 3:' < br > 'if x < 7:' < br > 'print("x is between 3 and7")' < br > 'else:' < br > 'print("x is greater than or equal to 7")' < br > 'else:'< br > 'print("x is less than or equal to 3")'

8. Loops: Repeat After Me! Loops are used to repeat a block of code multiple times until a certain condition is met. There are two main types of loops in Python: for loops and while loops. Here's an example of a for loop that iterates over a list of numbers and prints each number along with the output. In this example, the loop will continue to run as long as count is greater than 0. Each time the loop runs, it prints the value of count, then subtracts 1 from it. Eventually, count becomes 0, and the loop stops running. There are also other types of loops in Python, such as nested loops, which allow you to put one loop inside another, and break and continue statements, which allow you to control the flow of the loop. INPUT OUTPUT FOR LOOP LOOP TYPE DESCRIPTION 'for' loop Used to iterate over a sequence of elements, such as a list or string 'while' loop Used to repeat a block of code while a certain condition is true WHILE LOOP

9. FUNCTION TYPE DESCRIPTION Built-in functions Functions that are built in python and can be used without needing to define them. Examples - 'print()' , 'len()' and 'range()' User-defined functions Functions that you create yourself to perform a specific task. They can be reused multiple times throughout your code. Functions: The Superheroes of Code! Functions are reusable blocks of code that perform a specific task. They allow you to write a piece of code once and use it multiple times without having to rewrite the code. There are two main types of functions in Python: built-in functions and user-defined functions. In this example, we define a function called add_numbers() that takes two parameters, a and b. The function adds a and b together and returns the sum. We then call the function with the values 2 and 3, which returns 5. Finally, we print the result. INPUT OUTPUT Built-in function User- defined function

10. Functions Continue... Here's an example of using the math library to calculate the square root of a number: Another example is using the pandas library to read a CSV file and display its contents:

11. Python's Top Guns: The Most Important Libraries 1. NumPy NumPy is a library for numerical computing in Python. It provides fast and efficient array operations and linear algebra routines. 2. Pandas Pandas is a library for data manipulation and analysis in Python. It provides powerful tools for working with structured data, such as dataframes and series. Example for importing NumPy Library in Python Example for importing Pandas Library in Python

12. Libraries Continue... Matplotlib is a library for data visualization in Python. It provides a variety of plots and charts for visualizing data, including line plots, scatter plots, and histograms. Scikit-learn is a library for machine learning in Python. It provides tools for data preprocessing, model selection, and evaluation, as well as a range of machine learning algorithms. Example for importing Matplotlib Library in Python Example for importing Scikit-learn library in Python 3. Matplotlib 4. Scikit-learn

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