Scott's (@tannewt) Basic like interface for Python

Author: RetiredWizard

basicpython.py

@@ -0,0 +1,61 @@
+# Developed by Scott Shawcroft (@tannewt) https://github.com/tannewt/basicpython
+#
+# This is an experiment to edit Python code like BASIC was edited.
+# The idea is imagining this as the default mode on a Raspberry Pi 400
+#
+print("# Basic Python v0")
+
+program = []
+top = {}
+no_ready = False
+
+while True:
+    if no_ready:
+        line = input()
+    else:
+        line = input("READY.\n")
+    lineno = None
+    if " " in line:
+        command, remainder = line.split(" ", 1)
+        lineno = None
+        try:
+            lineno = int(command, 10)
+        except ValueError:
+            pass
+    else:
+        command = line
+    no_ready = False
+    if lineno is not None:
+        if lineno < 1:
+            print("Line must be 1+")
+        else:
+            if lineno >= len(program):
+                program.extend([""] * (lineno - len(program)))
+            program[lineno - 1] = remainder
+            no_ready = True
+    elif command.lower() == "list":
+        for i, line in enumerate(program):
+            if line:
+                print(i+1, line)
+    elif command.lower() == "run":
+        isolated = {}
+        try:
+            exec("\n".join(program), isolated, isolated)
+        except Exception as e:
+            print(e)
+    elif command.lower() == "save":
+        filename = remainder.strip(" \"")
+        with open(filename, "w") as f:
+            f.write("\n".join(program))
+    elif command.lower() == "load":
+        filename = remainder.strip(" \"")
+        with open(filename, "r") as f:
+            program = f.readlines()
+            program = [line.strip("\r\n") for line in program]
+    elif command.lower() in ["exit","quit","dos"]:
+        break
+    else:
+        try:
+            exec(line, top, top)
+        except Exception as e:
+            print(e)