ListComprehension.txt

List 
new_list = [expression for member in iterable]

expression is the member itself, a call to a method, or any other valid expression that returns a value.
In the example above, the expression i * i is the square of the member value.
member is the object or value in the list or iterable. In the example above, the member value is i.
iterable is a list, set, sequence, generator, or any other object that can return its elements one at a time. In the example above, the iterable is range(10).

eg.
squares = [i * i for i in range(10)]


new_list = [expression for member in iterable (if conditional)]

number_list = [x for x in range(20) if x % 2 == 0]
print(number_list)

Nested IF with List Comprehension
num_list = [y for y in range(100) if y % 2 == 0 if y % 5 == 0]
print(num_list)


sentence = 'This is Python training"
vowels = [i for i in sentence if i in 'aeiou']
Here, list comprehension checks:

Is y divisible by 2 or not?
Is y divisible by 5 or not?
If y satisfies both conditions, y is appended to num_list.

if...else With List Comprehension
obj = ["Even" if i%2==0 else "Odd" for i in range(10)]
print(obj)


original_prices = [1.25, -9.45, 10.22, 3.78, -5.92, 1.16]
prices = [i if i > 0 else 0 for i in original_prices]

def add(x):
    return x**3

l=[1,2,3,4]
a=[add(i) for i in l]
print(a)