Added example of simple VM with stack and basic operations

Python/virtual_machine_hello.py

@@ -0,0 +1,38 @@
+class VM:
+
+    def __init__(self):
+        self.mem = [0 for i in range(0, 65536)]
+        self.i = 65535 # stack pointer
+
+    def __InterpretInstruction(self, cmd:str):
+        # cmd is only one char
+        if cmd == 'n':
+            self.i -= 1
+        elif cmd == 'b':
+            self.i += 1
+        elif cmd == 'p':
+            print(chr(self.mem[self.i]), end='')
+        elif cmd == '+':
+            self.mem[self.i+1] = self.mem[self.i] + self.mem[self.i+1]
+        elif cmd == '-':
+            self.mem[self.i+1] = self.mem[self.i] - self.mem[self.i+1]
+        elif cmd == '*':
+            self.mem[self.i+1] = self.mem[self.i] * self.mem[self.i+1]
+        elif cmd == '/':
+            self.mem[self.i+1] = self.mem[self.i] / self.mem[self.i+1]
+        elif cmd == 'g':
+            self.mem[self.i] = self.mem[self.mem[self.i]]
+        elif cmd == 's':
+            self.mem[self.mem[self.i]] = self.mem[self.i+1]
+        else:
+            self.mem[self.i] = ord(cmd) - ord('0') 
+
+    def ExecuteInstructions(self, instructions:str):
+        for ch in instructions:
+            self.__InterpretInstruction(ch)
+
+
+if __name__ == "__main__":
+    myVM = VM()
+    myVM.ExecuteInstructions('xpdna+bpn7+bppn3+bpPpnf+1+bpnH+bpn3+bpn)n1+b+bpn++4+bpQp')
+    print()