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                     PYTHO
H T T P S : / / S I D H I T R A I N I N G S . C O M /
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WHAT IS 
PYTHON
The popular high-level 
programming  language Python is 
used in a  variety  of applications.
Python's straightforward 
syntax  makes it a  simple 
language to  learn.
Python may be used for  
straightforward tasks  like  
graphing or more difficult ones 
like  machine learning.
VARIABLES, OBJ ECTS, & 
CLASSES
Variable
A variable is a  pointer to a  value kept in the memory 
of a  computer.
A variety of categories (or data types) can be used 
to  group variables, including integers (int, float, etc.),  
Boolean values (true/false), and sequences (strings, 
lists,  etc.).
Object
An object is a  group of manipulatable data from a 
computer's  memory.
Despite the fact that certain objects might be defined by 
data  referred to by numerous variables, ALL VARIABLES ARE 
OBJECTS.
The actions taken on or changes made to an 
object's  data are called methods. They explain 
what an object  can "do."
VARIABLES, OBJ ECTS, & 
CLASSES
Class
A class is a  group of objects that all use the 
same  variables and functions.
All of the objects ( instances)  that make up the class 
have  a  blueprint in the definition of the class.
The same variables (colour, size, shape, etc.) may be  
present in several instances, but they do not all have 
the  same values (blue/red/pink, small/large, 
square/circular,  etc.).
BASIC SYNTAX 
RULES
Your variable's name (myInt, etc.) is positioned to the left of the 
"="  operator.
The majority of variable names are in camel case, which starts 
with a  lowercase letter for the first word and capitalises any 
following terms.  In snake case, all words are lowercase and there 
are underscores  between them, variable names can also occur.
The variable name is set equal to the memory address where 
your  value is stored via the assignment operator ("=").
The "Hello, World" variable value is positioned to the right of the 
"="  operator.
This value's type need not be specified, but its format must 
adhere to  a  certain object type (as illustrated).
BASIC SYNTAX 
RFuUncLtiEonS Syntax
When you use the def... keyword, you are declaring a new 
function.  The name of your function is referred to by function(). 
This term is  often written in lowercase and designates a  verb 
or action.
The terms "parameters" (i.e., "values" or "variables") that can be 
used  within the definitional expressions of your function are "a" 
and "b." An  empty parenthesis ( )  is used if your function has no 
parameters.
An optional statement called "return" will send a value from 
your  function back to the original call.
BASIC SYNTAX 
RCaUlliLngE aS function
Use the function's name (function()) to invoke it, followed by 
any  required parameters (1, 2) enclosed in parentheses and 
separated  by commas. : function(1, 2) ; myValue
You have the option of setting your function call's argument equal 
to  a  variable (myValue). Your variable name will be set to the 
function's  return value.
COMMON DATA TYPES AND 
OPERATORS  BUSINESS
A data type is a way to categorise a  value and specify 
the  actions that may be carried out on it. An object's 
data type is  universal.
Operators are symbols that perform certain tasks or 
calculations.
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