Python structure
Python has a very simple structure and it is easy to use. No semi-colons to generate any kind of syntax errors also. The most basic syntax is the print() statement.
print() is a built-in Python function used to output text or variables to the console. "Hello, World!" is the text we want to print, enclosed in double quotation marks.

Variable
A variable is a named storage location used to store data that can change during the execution of a program.

variable_name = 4

Types of naming a variable:

• Camel Case: Each word except the first starts with a capital letter
  

  Camel Case example

  myVariableName = 4
  

• Pascal Case: Each word starts with a capital letter
  

  Camel Case example

  MyVariableName = 4
  

• Snake Case: Each word is separated by an underscore character
  

  Camel Case example

  my_variable_name = 4
  

We can also define the variable as

x, y, z = "Red", "Blue", "Green"

x = y= z = "Red"

color = ["red", "green", "blue"]
x = y = z = color

Output Variable
The python print() function is often used to output variables.

x = “This is python”
y = "Programming"
z = "reading at RJ's Blog"
a = 5
b = 6
print(x)
print(x, y, z)
print(a + b)

This is python
This is python programming reading at RJ's Blog
11

Global variable
Variables that are created outside of a function are known as global variables.

x = "Python"
def sample():
	print(“This is” + x)
sample()

Local variable
If we create a variable with the same name inside a function, this variable will be local, and can only be used inside the function

x = “Global”
def sample():
	x = “Local”
	print(“Python” + x)

Global keyword
Normally when we create a variable inside a function that variable is local and can only be used inside that function

def sample():
	global x 
	x = “interesting”
sample()
print(“Python is ” + x)

# Variables in Python

# variable = 5
# print(variable)

# 1 - camel case
# myVarName = "Hello"

# 2 - pascal case
# MyNewVar = "Python Programming"

# 3 - snake case
# my_new_Var = "How are you"

# print(myVarName, MyNewVar, my_new_Var)

# x, y, z = "Red", "Green", "Blue"
# print(x, y, z)

# x = "Red", "Green", "Blue"
# print(x)

# x = y = z = 56
# print(x, y, z)

# Global variable
# glo = 56
# print("The global variable is ", glo)

# def sample():
#     # Local variable
#     glo = "turned into 2"
#     print("The global is", glo)

# sample()
# print("The global variable is ", glo)

hellovar = 56
print(f"The value of hellovar is {hellovar}") # fstring