Forth, written in Python 3
In Python 4th, the "Hello, World" program can be written in two words:
Hello,\ World! ?
No, I did not count wrong.
Hello,\ World! is one word;
here's
why.
[One] thing we want out of our languages is simplicity... of syntax. Think of a language like Forth. [Robert "Uncle Bob" Martin; emphasis added]
very small [programs allow] the [end-user] to use their visual field as an augmentation to their short term memory, and that is the critical thing in end-user programming. [Alan Kay; emphasis added]
The goals of Python Forth include:
- actual freedom,
- low barrier to entry,
- extreme simplicity
Why write Forth in Python 3?
Ariadne IIb, released for July "Forth" 2020 [Doc] [Code]
Ariadne IIa (Pre-release) of July "Forth" 2020 edition; accompanies "Why can't Python deepcopy stdin?"
See the example at the top of the source code.
Ariadne IIa is barely tested. The basic operations like DUP, DROP, and OVER seem to work, as do the two compilers (:; and the tripple :, `, ;).
A lot of essential features are yet to be incorporated (one development goal was to get the compiler working as soon as possible).
I draw inspiration chiefly from Charles H. "Chuck" Moore (Forth's inventor), Leo Brodie (author of Thinking Forth and other texts), and Charles-Hanson Ting (creator of several Forth implementations and author of eForth and Zen and other texts).