On 05/17/2014 10:26 AM, Terry Reedy wrote: > When list.pop was added, the convention was changed to > "do not return the 'self' parameter" Do you have a reference for this? It is my understanding that the convention is for mutators to return None, in order to make it clear that the change is destructive. For example, the tutorial at https://docs.python.org/3.4/tutorial/datastructures.html says: """ You might have noticed that methods like insert, remove or sort that modify the list have no return value printed – they return None. [1] This is a design principle for all mutable data structures in Python. """ Methods like list.pop and dict.pop would seem like a case of "practicality beats purity" because it's more convenient (and faster) to delete and retrieve value at the same go.
RetroSearch is an open source project built by @garambo | Open a GitHub Issue
Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo
HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4