ShyamaSankar

# Original list of numbers.
numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

# For loop to double the numbers in a list.
doubled_numbers = []
for number in numbers:
  doubled_numbers.append(number * 2)
  
# Rewrite using list comprehension.
# Syntax: 

ShyamaSankar

# Create an empty set using the constructor method.
numbers = set() 
print(numbers) # Output: set()
# Note: {} creates a dictionary in Python.
print(type({})) # Output: <class 'dict'>

# set() constructor function takes an iterable as input.
numbers = set([1, 2])
print(numbers) # Output: {1, 2}
string_set = set("hello")

ShyamaSankar

# Create an empty dictionary using {}.
employees = {}
print(employees) # Output: {}
print(type(employees)) # Output: <class 'dict'>

# Create a dictionary with items using {}.
employees = {1: 'Tom', 2: 'Macy', 3: 'Sam'}
print(employees) # Output: {1: 'Tom', 2: 'Macy', 3: 'Sam'}

# Create an empty dictionary using dict() constructor.

ShyamaSankar

#### Tuple creation #####
# Create a tuple, also called tuple packing.
numbers = 1, 2
print(numbers) # Output: (1, 2) <- Note that it is represented with an enclosing paranthesis
# Create tuple with paranthesis.
numbers = (1, 2, 3)
print(numbers) # Output: (1, 2, 3)
# Create an empty tuple.
numbers = ()
print(numbers) # Output: ()