Add -E/--print

Author: klamike

pysrc/juliacall/__main__.py

@@ -3,15 +3,21 @@
     from pathlib import Path
     parser = argparse.ArgumentParser("JuliaCall REPL (experimental)")
     parser.add_argument('-e', '--eval', type=str, default=None, help='Evaluate <expr>. If specified, all other arguments are ignored.')
+    parser.add_argument('-E', '--print', type=str, default=None, help='Evaluate <expr> and display the result. If specified, all other arguments are ignored.')
 
     parser.add_argument('--banner', choices=['yes', 'no', 'short'], default='yes', help='Enable or disable startup banner')
     parser.add_argument('--quiet', '-q', action='store_true', help='Quiet startup: no banner, suppress REPL warnings')
     parser.add_argument('--history-file', choices=['yes', 'no'], default='yes', help='Load or save history')
     parser.add_argument('--preamble', type=Path, help='Code to be included before the REPL starts')
     args = parser.parse_args()
+    assert not (args.eval is not None and args.print is not None)
     if args.eval is not None:
         from juliacall import Main
         Main.seval(args.eval)
+    elif args.print is not None:
+        from juliacall import Main
+        result = Main.seval(args.print)
+        Main.display(result)
     else:
         from juliacall.repl import run_repl
         run_repl(