Add code (#447)

* 30.1.0

* 30.1.1

* 30.1.2

stdlib/2and3/code.pyi

@@ -0,0 +1,27 @@
+# Stubs for code
+
+from typing import Any, Callable, Mapping, Optional
+from types import CodeType
+
+class InteractiveInterpreter:
+    def __init__(self, locals: Optional[Mapping[str, Any]] = ...) -> None: ...
+    def runsource(self, source: str, filename: str = ...,
+                  symbol: str = ...) -> bool: ...
+    def runcode(self, code: CodeType) -> None: ...
+    def showsyntaxerror(self, filename: Optional[str] = ...) -> None: ...
+    def showtraceback(self) -> None: ...
+    def write(self, data: str) -> None: ...
+
+class InteractiveConsole(InteractiveInterpreter):
+    def __init__(self, locals: Optional[Mapping[str, Any]] = ...,
+                 filename: str = ...) -> None: ...
+    def interact(self, banner: Optional[str] = ...) -> None: ...
+    def push(self, line: str) -> bool: ...
+    def resetbuffer(self) -> None: ...
+    def raw_input(self, prompt: str = ...) -> str: ...
+
+def interact(banner: Optional[str] = ...,
+             readfunc: Optional[Callable[[str], str]] = ...,
+             local: Optional[Mapping[str, Any]] = ...) -> None: ...
+def compile_command(source: str, filename: str = ...,
+                    symbol: str = ...) -> Optional[CodeType]: ...