Is Python a

6. The map call is similar to a list comprehension—both build a new list by collectingthe results of applying an operation to each item in a sequence or otheriterable, one item at a time. The main difference is that map applies a functioncall to each item, and list comprehensions apply arbitrary expressions. Becauseof this, list comprehensions are more general; they can apply a function callexpression like map, but map requires a function to apply other kinds of expressions.List comprehensions also support extended syntax such as nested forloops and if clauses that subsume the filter built-in.7. Both lambda and def create function objects to be called later. Because lambda isan expression, though, it can be used to nest a function definition in placeswhere a def will not work syntactically. Using a lambda is never required—youcan always code a def instead, and reference the function by name. lambdas comein handy, though, to embed small pieces of deferred code that are unlikely to beused elsewhere in a program. Syntactically, a lambda only allows for a singlereturn value expression; because it does not support a block of statements, it isnot ideal for larger functions.378 | Chapter 17: Advanced Function Topics