List Comprehensions is like one line for loop built inside of brackets. It allow us to build lists using a different notation.

	
	Syntax: 
	
		my_list = [x for x in range(10)]		
	
		my_list = [expression for item in iterable if condition == True]		# with if condition
		

Nested List Comprehensions

	
	Syntax: 

		my_list = [expression for item in [expression for item in iterable]]		
		

List Comprehensions Examples :

• Grab every letter in string :

  	
  	my_list = [x for x in 'word']
  	
  	print(my_list) 		#  output : ['w', 'o', 'r', 'd']
  		
  

• Grab every digit in a Number :

  	
  	my_list = [x for x in str(123456)]
  	
  	print(my_list) 		#  output : ['1', '2', '3', '4', '5', '6']
  		
  

• Convert Celsius to Fahrenheit

  	
  	celsius = [0,15,30,45.5]
  
  	fahrenheit = [((9/5)*temp + 32) for temp in celsius ]
  
  	print(fahrenheit)
  		
  

• Nested List Comprehensions Example:

  	
  	my_list = [ x**2 for x in [x**2 for x in range(11)]]
  	
  	print(my_list)