Python List Comprehension Dictionary Set Comprehension and For Loops

lets create a list

lets grab all the even numbers from that list

lets use a list comperehension

lets to do a square of the even numbers

we can save it in a set form

we can also use set in place of list in the for loop

lets get letter , num pair for each letter in ‘abcd’ and number ‘0123’

we can use list comprehension to achieve the same result

tne parameters in the tuple should be match the parameters in the for loop . that is letter, should match letter in for loop and num
should match num in for loop. you cannot have letter in tuple or let in for number. neither can you havve num in tuple and number in
for loop

We can also use list comprehension with dictionaries.

Lets create 2 lists and make a tuple of out it and then get a dictionary from the tuple

Now with for loop we can get a dictionary of name being key and heroe being value

we can do the same thing using comprehension. hence dictionary comprehension

We can add if clauses as usual

A SET has UNIQUE VALUES

lets have list which has duplicates and add to a set and see how it behaves

it returns only uniques values as SETS only contain unique values

We can accomplish the same thing with SET comprehension which also takes a curly bracket

GENERATORS. they are very similar to list comprehension but they USE PARENTHESIS ie ()
and the results can be iterated through

Lets look at one quick example

We want to get n*n for each n in nums

lets get the values from my_gen

We can do the same thing with GENERATOR

now lets iterate through my_gen2