The following is something I have been pondering for quite a while now and am wondering what other people on this list think.
According to PEP 3100 (http://www.python.org/dev/peps/pep-3100/ ) raw_input() [as well as input()] is recommended for removal from the built-in namespace, to be replaced by sys.stdin.readline(). While I don't think anyone can argue that this removal makes a major difference for Python as a programming language, I believe it makes a significant difference for using Python as a learning language, adding a non-trivial barrier to learning. Consider the following fake sessions at the interpreter prompt, where I use extra parentheses to turn print as a function (as is also proposed in Python 3000) - these parentheses can of course be used with today's Python. # First ever program >>> print("Hello world!") Hello world! # More complicated example from the first interactive session using today's version >>> name = raw_input("Enter your name: ") Enter your name: Andre >>> print("Hello " + name + "!") Hello Andre! # More or less the same example using the proposed changes. >>> import sys >>> print("Enter your name: ") Enter your name: >>> name = sys.stdin.readline() <-- Andre >>> print("Hello " + name + "!") Hello Andre! To explain the above *simple* program to a beginner, we'd need: 1. to introduce the import statement 2. to introduce the dot notation (something Kirby would be happy with ;-) Furthermore, the flow is not the same as with today's raw_input(). I don't like it. While I totally agree with the proposed removal of input() [anything using eval() in a hidden way is *bad*], my preference would be to keep raw_input()'s functionality, perhaps renaming it to user_input() or ask_user(). Thoughts? André _______________________________________________ Edu-sig mailing list [email protected] http://mail.python.org/mailman/listinfo/edu-sig
