list comprehensions in python

List comprehensions in Python:
Let's learn about list comprehensions! You are given three integers and representing the dimensions of a cuboid along with an integer . You have to print a list of all possible coordinates given by on a 3D grid where the sum of is not equal to . Here,

Input Format

Four integers and each on four separate lines, respectively.

Constraints

Print the list in lexicographic increasing order.

Sample Input

1
1
1
2

Sample Output
[[0, 0, 0], [0, 0, 1], [0, 1, 0], [1, 0, 0], [1, 1, 1]]

Explanation

Concept

You have already used lists in previous hacks. List comprehensions are an elegant way to build a list without having to use different for loops to append values one by one. These examples might help.

The simplest form of a list comprehension is:

[ expression-involving-loop-variable for loop-variable in sequence ]

This will step over every element in a sequence, successively setting the loop-variable equal to every element one at a time. It will then build up a list by evaluating the expression-involving-loop-variable for each one. This eliminates the need to use lambda forms and generally produces a much more readable code than using map() and a more compact code than using a for loop.

>> ListOfNumbers = [ x for x in range(10) ] # List of integers from 0 to 9
>> ListOfNumbers
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

List comprehensions can be nested where they take the following form:

[ expression-involving-loop-variables for outer-loop-variable in outer-sequence for inner-loop-variable in inner-sequence ]

This is equivalent to writing:

results = []
for outer_loop_variable in outer_sequence:
    for inner_loop_variable in inner_sequence:
        results.append( expression_involving_loop_variables )


The final form of list comprehension involves creating a list and filtering it similar to using the filter() method. The filtering form of list comprehension takes the following form:

[ expression-involving-loop-variable for loop-variable in sequence if boolean-expression-involving-loop-variable ]

This form is similar to the simple form of list comprehension, but it evaluates boolean-expression-involving-loop-variable for every item. It also only keeps those members for which the boolean expression is True.

>> ListOfThreeMultiples = [x for x in range(10) if x % 3 == 0] # Multiples of 3 below 10
>> ListOfThreeMultiples
[0, 3, 6, 9]


PYTHON CODE:

X=int(input())
Y=int(input())
Z=int(input())
n=int(input())
ListOfNumbers =[]
ListOfNumbers = [[x,y,z] for x in range(0,X+1)for y in range(0,Y+1)for z in range(0,Z+1)if x+y+z!=n ]
print(ListOfNumbers)