Operadores de Python – Part 1

Los operadores de Python en general se utilizan para realizar operaciones en valores y variables. Estos son símbolos estándar utilizados con el propósito de operaciones lógicas y aritméticas. En este artículo, veremos diferentes tipos de operadores de Python. 

• OPERADORES: Son los símbolos especiales. Por ejemplo, +, *, /, etc.
• OPERAND: Es el valor sobre el que se aplica el operador.

Operadores aritméticos

Los operadores aritméticos se utilizan para realizar operaciones matemáticas como suma, resta, multiplicación y división.

# Examples of Arithmetic Operator
a = 9
b = 4
  
# Addition of numbers
add = a + b
  
# Subtraction of numbers
sub = a - b
  
# Multiplication of number
mul = a * b
  
# Division(float) of number
div1 = a / b
  
# Division(floor) of number
div2 = a // b
  
# Modulo of both number
mod = a % b
  
# Power
p = a ** b
  
# print results
print(add)
print(sub)
print(mul)
print(div1)
print(div2)
print(mod)
print(p)

# Examples of Relational Operators
a = 13
b = 33
  
# a > b is False
print(a > b)
  
# a < b is True
print(a < b)
  
# a == b is False
print(a == b)
  
# a != b is True
print(a != b)
  
# a >= b is False
print(a >= b)
  
# a <= b is True
print(a <= b)

# Examples of Logical Operator
a = True
b = False
  
# Print a and b is False
print(a and b)
  
# Print a or b is True
print(a or b)
  
# Print not a is False
print(not a)

# Examples of Bitwise operators
a = 10
b = 4
  
# Print bitwise AND operation
print(a & b)
  
# Print bitwise OR operation
print(a | b)
  
# Print bitwise NOT operation
print(~a)
  
# print bitwise XOR operation
print(a ^ b)
  
# print bitwise right shift operation
print(a >> 2)
  
# print bitwise left shift operation
print(a << 2)

# Examples of Assignment Operators
a = 10
  
# Assign value
b = a
print(b)
  
# Add and assign value
b += a
print(b)
  
# Subtract and assign value
b -= a
print(b)
  
# multiply and assign
b *= a
print(b)
  
# bitwise lishift operator
b <<= a
print(b)

a = 10
b = 20
c = a
  
print(a is not b)
print(a is c)

# Python program to illustrate
# not 'in' operator
x = 24
y = 20
list = [10, 20, 30, 40, 50]
  
if (x not in list):
    print("x is NOT present in given list")
else:
    print("x is present in given list")
  
if (y in list):
    print("y is present in given list")
else:
    print("y is NOT present in given list")

# Examples of Operator Precedence
  
# Precedence of '+' & '*'
expr = 10 + 20 * 30
print(expr)
  
# Precedence of 'or' & 'and'
name = "Alex"
age = 0
  
if name == "Alex" or name == "John" and age >= 2:
    print("Hello! Welcome.")
else:
    print("Good Bye!!")

# Examples of Operator Associativity
  
# Left-right associativity
# 100 / 10 * 10 is calculated as
# (100 / 10) * 10 and not
# as 100 / (10 * 10)
print(100 / 10 * 10)
  
# Left-right associativity
# 5 - 2 + 3 is calculated as
# (5 - 2) + 3 and not
# as 5 - (2 + 3)
print(5 - 2 + 3)
  
# left-right associativity
print(5 - (2 + 3))
  
# right-left associativity
# 2 ** 3 ** 2 is calculated as
# 2 ** (3 ** 2) and not
# as (2 ** 3) ** 2
print(2 ** 3 ** 2)

# A Python program to demonstrate the use of 
# "//" for integers
print (5//2)
print (-5//2)

# A Python program to demonstrate use of 
# "/" for floating point numbers
print (5.0/2)
print (-5.0/2)

# A Python program to demonstrate use of 
# "//" for both integers and floating points
print (5//2)
print (-5//2)
print (5.0//2)
print (-5.0//2)

# Program to demonstrate conditional operator
a, b = 10, 20
  
# Copy value of a in min if a < b else copy b
min = a if a < b else b
  
print(min)

# Python program to demonstrate ternary operator
a, b = 10, 20
  
# Use tuple for selecting an item
# (if_test_false,if_test_true)[test]
# if [a<b] is true it return 1, so element with 1 index will print
# else if [a<b] is false it return 0, so element with 0 index will print
print( (b, a) [a < b] )
  
# Use Dictionary for selecting an item
# if [a < b] is true then value of True key will print
# else if [a<b] is false then value of False key will print 
print({True: a, False: b} [a < b])
  
# lambda is more efficient than above two methods
# because in lambda  we are assure that
# only one expression will be evaluated unlike in
# tuple and Dictionary
print((lambda: b, lambda: a)[a < b]())

# Python program to demonstrate nested ternary operator
a, b = 10, 20
  
print ("Both a and b are equal" if a == b else "a is greater than b"
        if a > b else "b is greater than a")

# Python program to demonstrate nested ternary operator
a, b = 10, 20
  
if a != b:
    if a > b:
        print("a is greater than b")
    else:
        print("b is greater than a")
else:
    print("Both a and b are equal")

a=5
b=7
  
# [statement_on_True] if [condition] else [statement_on_false] 
  
print(a,"is greater") if (a>b) else print(b,"is Greater")

      
# Program to demonstrate conditional operator
a, b = 10, 20
  
# If a is less than b, then a is assigned
# else b is assigned (Note : it doesn't 
# work if a is 0.
min = a < b and a or b
  
print(min)