Quick Answer: Is List Comprehension A Loop?

Is there a tuple comprehension?

Comprehension works by looping or iterating over items and assigning them into a container, a Tuple is unable to receive assignments.

Once a Tuple is created, it can not be appended to, extended, or assigned to.

Because the Tuple is only holding a reference to that kind of object..

Why is it called list comprehension?

In a list or set comprehension, instead of giving the elements of the list or set explicitly, the programmer is describing what they comprehend (in the “include” sense) with an expression. Because it’s a very comprehensive way to describe a sequence (a set in math and other languages, and a list/sequence in Python).

Is list comprehension faster than loop?

List comprehension: List comprehensions are known to perform, in general, better than for loops as they do not need to call the append function at each iteration. Map: This applies a function to all elements of an input list.

Can we use break in list comprehension?

It’s working as i want. But the problem is that to get the value from len([ j for j in filterlist if j in i ])>0 , it will need to loop all the item inside the filterlist. So even if it match the first item in filterlist, the loop will have to go through till the end.

What is meant by list comprehension?

A list comprehension is a syntactic construct available in some programming languages for creating a list based on existing lists. It follows the form of the mathematical set-builder notation (set comprehension) as distinct from the use of map and filter functions.

What is the list comprehension equivalent for?

List Comprehension as an Alternative. List comprehension is a complete substitute to for loops, lambda function as well as the functions map() , filter() and reduce() . What’s more, for some people, list comprehension can even be easier to understand and use in practice! You’ll read more about this in the next section!

How is a set comprehension different from a list comprehension?

Set Comprehensions { } A set comprehension is similar to a list comprehension but returns a set instead of a list. The syntax is slightly different in the sense that we use curly brackets instead of square brackets to create a set. The list includes a lot of duplicates, and there are names with only a single letter.

What kind of operations can a list comprehension do?

List comprehensions provide a concise way to create lists. Common applications are to make new lists where each element is the result of some operations applied to each member of another sequence or iterable, or to create a subsequence of those elements that satisfy a certain condition.

Is map faster than for loop?

Comparing performance , map() wins! map() works way faster than for loop.

What is faster map or list comprehension?

List comprehension is more concise and easier to read as compared to map. List comprehension are used when a list of results is required as map only returns a map object and does not return any list. Map is faster in case of calling an already defined function (as no lambda is required).