Operators in Python by AryaDrj

Operators in Python by AryaDrj

Topic covered:

  • Arithmetic Operators
    • (+, - , * , / , % ,**, //)
  • Logical Operators
    • (and, or , not)
  • Unary minus operators
    • (- variable)
  • Membership Operators 
    • ( in , not in)
  • Bitwise Operators
    • (~,&,|,^,<<,>>)
  • Identity Operators 
    • (is, is not)
  • Relational Operators
    • (>,>=,<,<=,==,!=)

1. The  and operator in Python

  • If x in false it will return x otherwise y

x=1

y=12

print( x and y )


2. Program 2:

Code:

a = 14 b = 4 print(b and a)
print(b & a)


  • This is because ‘and’ tests whether both expressions are logically True while ‘&’performs bitwise AND operation on the result of both statements.
3. Unary minus operator (- variable)

n = 10
print(-n)


num = - 10
num = -num
print(num)


Bitwise Operator


  • Bitwise AND operator (&)
  • Bitwise OR operator (|)
  • Bitwise XOR operator (^)
  • Bitwise Left shift operator (<<)
  • Bitwise Right shift operator (>>)
  • Bitwise Complement operator (~)
Example 1:

#Bitwise Complement Operator (~)
x = 10
print(~x)

  • It will change the 0's to 1's and vice versa and taking complement.
  • Or formula is : -(x)-1
Example 2:

#Bitwise And Operator (~)
x = 10
y = 11
print(x&y)

Tracing:
10 = 0000 1010
11 = 0000 1011

10 & 11 = 0000 1010

= 10


Example 3:

#Bitwise OR Operator (~)
x = 10
y = 11
print(x&y)

Tracing:
10 = 0000 1010
11 = 0000 1011

10 & 11 = 0000 1011

= 11


Example 4:

#Bitwise XOR Operator (^)
x = 10
y = 11
print(x^y)

Tracing:
10 = 0000 1010
11 = 0000 1011

10 & 11 = 0000 0001

= 1



Example 5:

#Bitwise Left Shift Operator (<<)
x = 10
print(x<<2)

Tracing:
10 = 0000 1010
  
BCD Value : 
128  64 32 16 8 4 2 1
Result = 0010 1000

Example 6:

#Bitwise Right Shift Operator (>>)
x = 10
print(x>>2)

Precedence and Associativity of Operators 

Operators
  • ()
    • Parentheses
  • ** 
    • Exponent
  • +x, -x, ~x 
    • Unary plus, Unary minus, Bitwise NOT
  • *, /, //, % 
    • Multiplication, Division, Floor division, Modulus
    • (Left to right)
  • +, -
    • Addition, Subtraction
  • <<, >>
    • Bitwise shift operators
  • &
    • Bitwise AND
  • ^
    • Bitwise XOR
  • |
    • Bitwise OR
  • ==, !=, >, >=, <, <=, is, is not, in, not in
    • Comparisons, Identity, Membership operators
  • not
    • Logical NOT
  • and
    • Logical AND
  • or
    • Logical OR
  • = (Assignment Operator)
    • (Right to left)

Solve this:

  • -6 + 9 * 7
  • (54+9) % 8
  • 21 + -4*6 / 9
  • 6 + 15 / 3 * 3 - 8 % 3

Solve this:

que= (x+y)*z**a//b+c

Where

x = 1
y = 2
z = 3
a = 2
b = 2
c = 3 

Explanation:

1. First Parentheses are evaluated.
2. Exponentiation is done.
3. Multiplication ,Division ,Modulus and floor division.
4. Addition and subtraction are done afterwards.
5. Finally assignment operation is performed.

Example:

(x+y)*z**a//b+c

3*z**a//b+c
3*9//2+3
27//2+3
13+3
16 (Solved)

Questions :

  1. Which operator have lowest precedence value?
  2. Which operator have highest precedence value?
  3. What is operator?
    • Operators are special symbols that perform specific operations on one, two, or three operands, and then return a result.
    • a+b
    • Here + is operator.
  4. What is operand?
    • a+b
    • Here a and b are operands.
5. What is expression?
    • An expression is a combination of operators, constants and variables
    • Example: 3*z**a//b+c



Comments

Post a Comment

Popular posts from this blog

Invalid syntax , perhaps you forgot a comma? Error in Python

Image
Invalid syntax , perhaps you forgot a comma? Error n Python Problem : Invalid syntax , perhaps you forgot a comma? Error in Python Solution 1: May be you  have missed the assignment operator."="  Example: Solution 2: May be you have missed the comma between value or variable","  Example: Still Problem is not solved? For any queries, you can contact us: 📬 Contact Me 📞 Phone:  +918431334381 💬 WhatsApp:  +918431334381 📧 Email:   aryadrj@gmail.com 📝 Form:   Click here to fill out the form
Read more

How to set image in carousel using flask?

Image
How to set image in carousel using flask? Step 1: Create one folder on the desktop called my Flask . Step 2: Create Two folder called static and templates  in the myFlask folder. Create one file called main.py   in the myFlask folder. Step 3: Add the code in the main.py file.      from flask import Flask,render_template      app = Flask(__name__)      @app.route('/')      def hello_world():          return render_template("index.html")      app.run(debug=True) Step 4: Create image folder in the static folder. Add one image  in the image folder. [arya.png]. Step 5: Create index.html in the templates folder and add the below code in that folder. <html> . . . <div id= "carouselExampleSlidesOnly" class= "carousel slide" data-ride= "carousel" > <div class= "carousel-inner" > <div class= "carousel-item active" > <img src= "{{url_for('st...
Read more

Cyber Security Capsule

Image
 Cyber Security Capsule Do you know India ranks 3rd among nations facing most cyber threats: Symantec. 1. What is virus? A Virus is a “program that is loaded onto your computer without your knowledge and runs against your wishes. 2. What is solution to prevent laptop from virus? Install a security suite that protects the computer against threats such as viruses and worms.you can use Avg,Quick heal etc. 3. What is malware? The word "malware" comes from the term "MALicious softWARE." Malware is any software that infects and damages a computer system without the owner's knowledge or permission. MALicious softWARE 4. How to stop malware ? Basic steps: Turn on automatic updates of your phone. Don’t ‘root’ or ‘jailbreak’ your device. Only install software from reputable publishers. Only download mobile apps from official online app stores (iOS App Store, Windows Phone Store or Google Play Store). Install security software and keep it up to date Advance steps: To Stop ...
Read more