usys: Add version info.

Fixes #119

doc/main/micropython/usys.rst

@@ -5,6 +5,8 @@
 
 This MicroPython module is a subset of the `sys module`_ in Python.
 
+.. rubric:: Input and output streams
+
 .. module:: usys
 
 .. autodata:: usys.stdin
@@ -16,9 +18,32 @@ This MicroPython module is a subset of the `sys module`_ in Python.
 .. autodata:: usys.stderr
     :annotation:
 
+.. rubric:: Version info
+
+.. autodata:: implementation
+    :annotation:
+
+.. autodata:: version
+    :annotation:
+
+.. autodata:: version_info
+    :annotation:
+
 Examples
 ---------------
 
+Version information
+*******************************
+
+.. literalinclude::
+    ../../../examples/micropython/usys/pybricks_version.py
+
+.. literalinclude::
+    ../../../examples/micropython/usys/micropython_version.py
+
+Standard input and output
+*******************************
+
 The ``stdin`` stream can be used to capture input via the Pybricks Code
 input/output window. See the `keyboard input`_ project to learn how this works.
 This approach can be extended to exchange data with any `other device`_ as well.

examples/micropython/usys/micropython_version.py

@@ -0,0 +1,10 @@
+import usys
+
+# ('micropython', (1, 19, 1), 'SPIKE Essential Hub with STM32F413RG', 6)
+print(usys.implementation)
+
+# '3.4.0; Pybricks MicroPython v3.2.0b5 on 2022-11-11'
+print(usys.version)
+
+# (3, 4, 0)
+print(usys.version_info)

examples/micropython/usys/pybricks_version.py

@@ -0,0 +1,4 @@
+from pybricks import version
+
+# ('essentialhub', '3.2.0b5', 'v3.2.0b5 on 2022-11-11')
+print(version)

src/pybricks/__init__.py

@@ -3,6 +3,6 @@
 
 version: Tuple[str, str, str] = (
     "hub",
-    "3.2.0b1",
-    "v3.2.0b1-GIT_HASH on DATE",
+    "3.X.YbZ",
+    "v3.X.YbZ-GIT_HASH on DATE",
 )

src/usys/__init__.py

@@ -9,30 +9,45 @@
 This module provides a subset of the standard Python ``sys`` module.
 """
 
+from typing import Tuple
+
 from uio import FileIO as _FileIO
 
 stdin: _FileIO = _FileIO()
 """
-This is a stream object (:class:`uio.FileIO`) that receives input from a connected
-terminal, if any.
-
-Writing may modify newline characters. Use ``stdin.buffer`` instead if
-this is undesirable.
+This is a stream object (:class:`uio.FileIO`) that receives input from a
+connected terminal, if any.
 
-Also see :func:`micropython.kbd_intr` to disable ``KeyboardInterrupt`` if you
-are passing binary data via ``stdin``.
+Also see :func:`kbd_intr <micropython.kbd_intr>` to disable
+``KeyboardInterrupt`` when passing binary data via ``stdin``.
 """
 
 stdout: _FileIO = _FileIO()
 """
-This is a stream object (:class:`uio.FileIO`) that sends output to a connected terminal,
-if any.
-
-Reading may modify newline characters. Use ``stdout.buffer`` instead if
-this is undesirable.
+This is a stream object (:class:`uio.FileIO`) that sends output to a connected
+terminal, if any.
 """
 
 stderr: _FileIO = _FileIO()
 """
 Alias for :data:`stdout`.
 """
+
+implementation: Tuple[str, Tuple[int, int, int], str, int] = (
+    "micropython",
+    (1, 19, 1),
+    "NAME Hub with PROCESSOR",
+    6,
+)
+"""
+MicroPython version tuple. See format and example below.
+"""
+
+version: str = "3.4.0; Pybricks MicroPython v3.2.0b5 on 2022-11-11"
+"""
+Python compatibility version, Pybricks version, and build date.
+See format and example below.
+"""
+
+version_info: Tuple[int, int, int] = (3, 4, 0)
+"""Python compatibility version. See format and example below."""