Jump Start With Python - Part 3

Gagan Sikri

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21 Comments

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Subash10y ago
Thanks for you article
Subash10y ago
Yes Now i can understand why python is easy to learn
Sourabh Somani11y ago
Read This article you will get the difference between Identity Operator and Membership Operator http://www.c-sharpcorner.com/UploadFile/75a48f/python-operators/
Nilesh Jadav11y ago
Nice one sir
Sibeesh Venu11y ago
Nice Share.
Pankaj Kumar Choudhary11y ago
Nice Explain Sir.......
Sourabh Somani11y ago
In my next article I am explaining Python Operators so please read membership operator once I have seen this mistake on so many site....
- Gagan Sikri11y ago
  Syntax is "is" and "is not" use that, and I will mail you doc for the same.
- Gagan Sikri11y ago
  Sourabh Somani in or not in as well as is and is not are same things now, if you will go through documentation of Python 3.3 and above you can see both are equal. For more details you can visit: https://docs.python.org/3.6/reference/expressions.html
- Gagan Sikri11y ago
  Sourabh Somani You are right, I mixed up two different concepts. According to documentation in some scenarios they are equal else they have to be treated different, I will correct this right away and thanks for pointing out the mistake :)
Sourabh Somani11y ago
Membership operators are : in or not in you are going wrong
Santhakumar Munuswamy11y ago
Good one
- Gagan Sikri11y ago
  Thanks Santhakumar Munuswamy :)
Tanya Sharma11y ago
Good to learn from!!
- Gagan Sikri11y ago
  Thanks Tanya Sharma :)
Gopi Chand11y ago
Good article
- Gagan Sikri11y ago
  Thanks Gopi Chand :)

This article is in a continuation of my previous articles:

Variable and data types in Python

Variables and data types in Python adhere to standard nomenclature of an alphanumeric name beginning with a letter (A-Z or a-z or 0-9) or underscore ("_").
Variables do not need to be declared and variable names are case sensitive.
The datatype of variables in Python is automatically inferred from the assignment statement.
Python currently supports the following data types:
- Boolean
- Integer
- Float
- String
- List
- Tuples
- Dictionary
- Objects
- None

Syntax/Example

Figure 1: Syntax and Example for Variable and data types (input)

Figure 2: Syntax and Example for Variable and data types (Output)

Expressions and Statements in Python

Some basic statements are allowed in Python as follows:
1. print
  
  It is used to output strings, integer or any other datatype.
  
  Example
  1. print("Jump Start with Python - Part 3")
2. Assignment Statement
  
  It is used to assign a value to a statement.
  
  Example
  1. x=139 #139 is assigned to variable x
  2. y="Python" #Python is assigned to variable y
3. input / raw_input
  
  It is used to get input values from the user such as int, string, bool and so on.
  
  Example
  1. x=input("Enter Value")
  2. #This will take input from the user, we can also parse specific input type such as
  4. y=int(input("Enter Integer Value"))
  5. #y will accept only integer value
4. Import
  
  It allows importing modules in Python, for example, os, math and so on.
Passing Statements

Python allows the passing of statements typically in either of two ways and they are explained in the following.
1. Single Line Statement
  1. #this is a example of single line statement
  2. sum=x + y + z
2. Multi-Line Statements
  1. #this is example of multi-line statements
  2. sum= a + \
  3. b + \
  4. c
String Quotations

Python allows (') Single, (") Double and (""" or ''') Triple quotes for string literals and they are used at the beginning and ending point of a string respectively.

Example
1. #Example of Single quote
2. x='Hello'
4. #Example of Double quote
5. y="C# Corner"
Triple quotes are used for spanning a string to multiple lines. It is usually used to either get a paragraph as input or output.

Example
1. #Example of Triple quote
2. t1='''''''This is 1st
3. example of triple quote.'''
5. t2="""This is 2nd
6. example of triple quote."""

Operators in Python

Operators are the most important part of a programming language since they provide and enhance the computational and functional capabilities of a programming language. There are various types of operators available in Python and they are categorized under the following categories.

Arithmetic Operators

They are used to do arithmetic operations and are as in the following:
- Modulus (%)
- Division (/)
- Multiplication (*)
- Addition (+)
- Subtraction (-)
- Exponent (**)
- Floor Division (//)
Syntax and Example

Figure 3: Syntax and Example for Arithmetic Operators (Input)

Figure 4: Syntax and Example for Arithmetic Operators (Output)
Relational/Comparison Operators

They are used to relate or compare the values on variables present on both sides of these operators. Relational/Comparison operators are as listed below:
- Equality (==)
- Not Equal (!=)
- Less Than (<)
- Greater Than (>)
- Less Than Equals (<=)
- Greater Than Equals (>=)
Syntax and Example

Figure 5: Syntax and Example for Relational/Comparison Operators (Input)

Note: I will explain about Conditional Programming in Python (If statement) used in this example in another article.

Figure 6: Syntax and Example for Relational/Comparison Operators (Output)
Bitwise Operators

These operators are also known as Binary Operators. They work on bits and perform bit-by-bit operations and they are listed as in the following:
- Binary AND (&)
- Binary OR (|)
- Binary XOR (^)
- Binary One's Complement (~)
- Binary Left Shift (<<)
- Binary Right Shift (>>)
Syntax and Example

Figure 7: Syntax and Example for Bitwise/Binary Operators (Input)

Figure 8: Syntax and Example for Bitwise/Binary Operators (Output)
Logical Operators

They are used to perform logical operations and are listed below:
- AND (and)
- OR (or)
- NOT (not)
Syntax and Example

Figure 9: Syntax and Example for Logical Operators (Input)

Figure 10: Syntax and Example for Logical Operators (Output)
Membership Operators

These operators check for membership in a sequence, such as strings, tuples, dictionary or lists and so on and they are listed as in the following:
- IS (is)
- IS NOT (is not)
Syntax and Example

Figure 11: Syntax and Example for Membership Operators (Input)

Figure 12: Syntax and Example for Membership Operators (Output)
Identity Operators

These operators are used to compare the memory locations of two objects and they are listed as in the following:
- IS (is)
- IS NOT (is not)
Syntax and Example

Figure 13: Syntax and Example for Identity Operators (Input)

Figure 14: Syntax and Example for Identity Operators (Output)
Assignment Operators

They are used for assigning values to variables and are listed as in the following:
- Assignment Operator (=)
- Modulus AND (%=)
- Divide AND (/=)
- Multiply AND (*=)
- Add AND (+=)
- Subtract AND (-=)
- Exponent AND (**=)
- Floor Division AND (//=)
Syntax and Example

Figure 15: Syntax and Example for Assignment Operators (Input)

Figure 16: Syntax and Example for Assignment Operators (Output)