34 lines
816 B
Plaintext
34 lines
816 B
Plaintext
== Why is this an issue?
|
|
|
|
There are several ways to create a new list based on the elements of some other collection, but the use of a list comprehension has multiple benefits. First, it is both concise and readable, and second, it yields a fully-formed object without requiring a mutable object as input that must be updated multiple times in the course of the list creation.
|
|
|
|
|
|
=== Noncompliant code example
|
|
|
|
[source,python]
|
|
----
|
|
squares = []
|
|
for x in range(10):
|
|
squares.append(x**2) # Noncompliant
|
|
|
|
squares = map(lambda x: x**2, range(10)) #Noncompliant
|
|
----
|
|
|
|
|
|
=== Compliant solution
|
|
|
|
[source,python]
|
|
----
|
|
squares = [x**2 for x in range(10)]
|
|
----
|
|
|
|
ifdef::env-github,rspecator-view[]
|
|
|
|
'''
|
|
== Implementation Specification
|
|
(visible only on this page)
|
|
|
|
include::message.adoc[]
|
|
|
|
endif::env-github,rspecator-view[]
|