FOP: Module 2

Python

• an interpreted, object-oriented, high-level programming language

• created by Guido van Rossum and released in 1991

Why Use Python?

1. Easy to learn and use

2. Versatile

3. Large community and ecosystem

4. Cross-platform support

5. High-level language

6. Interpreted language

1. Easy to learn and use

has a simple and easy-to-read syntax

2. Versatile

python can be used for a wide range of applications including web dev, data analysis, ai, scientific computing, game dev, etc.

3. Large community and ecosystem

python has a large and active community of developers who contribute to the development of libraries and tools

4. Cross-platform support

python can use a variety of platforms (windows, macOS, linux, etc.)

5. High-level language

python is designed to be more human-readable, making it easier to write and maintain code

6. Interpreted language

no need to compile code before it can be executed, making it easier to write and test code

Why Use Python?

• Web Apps

• For Data Science and Data Visualization

• Machine Learning

• Script for Vulnerability Testing

Variables

• containers used to store the value or results

• a named location reserved to store values in the memory

• equal sign (=) is used to assign values to variables

subject (the variable) = “fop” (the value)

Data Types

• String

• Integer

• Float

• Boolean

name = “Micaila Almin”

str or string

age = 18

int or integer

grade = (99.9)

float

continue = True

boolean

Naming Variables

1. The name of the variable must be composed of upper-case or lower-case letters, digits, and the character _ (underscore)

2. The name of the variable must begin with a letter

3. The underscore character is a letter

4. Upper- and lower-case letters are treated as different

5. The name of the variable must not be any of Python's reserved words/keywords

Keywords

• reserved keywords because you musn’t use them as names

• predefined

Indentation

used to indicate a code block

if a == 1
print(“Yes”)

print() function

• built-in function

• prints/outputs a specified message to the screen/console window

Two keyword arguments of print() function

1. end

2. sep (separator)

Common Escape Sequence

input() function

• accepts user input

name = input(“Enter Full Name:”)
print(“Name:” + name)

Casting

• converting one data type into another

Arithmetic Operators

String

series or characters interpreted as text

Concatenation

Multiple Line of Text

• you can use 3 double quote or 3 single quote to display multiple text

Strings Placeholders

containers for strings and numbers:

• {} format

• %

• F or f

String Formatting Functions

Comments

#This is a single line comment

Multi lined comment

#This is a comment
#written in
#more than just one line

“““ This is a comment written in more than just one line “““

Inline comment

print(“Hello World”) #This is an inline comment