Add a main! Now it works!

main.py

@@ -0,0 +1,36 @@
+from emis_funky_funktions import *
+
+from typing import Sequence
+
+from grammar import lex_and_parse
+from lex import Lexeme
+from resolution import derives_false
+
+def main(args: Sequence[str]) -> Tuple[str, int]:
+	match args[1:]:
+		case [file]:
+			with open(file) as input:
+				match lex_and_parse(input.read()):
+					case Ok(Ok(ir_kb)):
+						return (
+							'no'
+							if derives_false(ir_kb) else
+							'yes',
+							0
+						)
+					case Ok(Err(gen_ir_err)):
+						return (str(gen_ir_err), 102)
+					case Err((Lexeme(token, text, line, col_start, col_end), expected)):
+						return (
+							f'Parse error!  Line {line}:{col_start}-{col_end}\n\nGot: {repr(text)}\nExpected: {expected}',
+							101
+						)
+		case _:
+			return (f'Usage: python {args[0]} some_file.cnf', 100)
+	raise Exception('Unreachable')
+
+if __name__ == '__main__':
+	from sys import argv
+	out, code = main(argv)
+	print(out)
+	exit(code)