When comparing ed vs pyvim, the Slant community recommends ed for most people. In the question“What are the best programming text editors?” ed is ranked 55th while pyvim is ranked 67th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Tight control over what's displayed, within terminal window
Pro ed is the standard text editor
As the standard text editor, ed
is available on multiple systems.
Pro Consistent UI
ed
has a consistent user interface and error reportage.
Pro Fast development of new features
Pyvim is written in Python. It's a great language that allows for fast development of features and quick bugfixing.
It also relies on existing Python plugins to add even more functionality.
Pro Vim-like editor
Pyvim has some of Vim's features and shortcuts, as well as some custom improvements that are already built-in.
Cons
Con Obsolete
There's absolutely no need for ed when you have sed and ex.
Con Not a lot of features
While extremely fast and simple, Ed is simply not for programming for a long time because it lacks a lot of important features. It should be used instead for quick edits.
Con Not a persistent UI
You can only view portions of a file through search or regular expression commands. You cannot scan or scroll through a file using the available screen real-estate.
It's not too dissimilar in use to command-line tools (such as grep and sed) for editing a file. In fact, both grep and sed are based on how interaction is performed with Ed.
Con CLI only
Pyvim runs through the terminal only.