Micropython v1.27 merge

.gitattributes

@@ -27,4 +27,5 @@
 # These should also not be modified by git.
 tests/basics/string_cr_conversion.py -text
 tests/basics/string_crlf_conversion.py -text
+tests/micropython/test_normalize_newlines.py.exp -text
 # CIRCUITPY-CHANGE: remove non-CircuitPython tests

.pre-commit-config.yaml

@@ -9,7 +9,7 @@
 
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v5.0.0
+    rev: v6.0.0
     hooks:
       - id: check-yaml
       - id: end-of-file-fixer
@@ -55,14 +55,14 @@ repos:
         language: python
   - repo: https://github.com/astral-sh/ruff-pre-commit
     # Ruff version.
-    rev: v0.9.4
+    rev: v0.15.7
     hooks:
       # Run the linter.
       - id: ruff
         args: [ --fix ]
       # Run the formatter.
       - id: ruff-format
   - repo: https://github.com/tox-dev/pyproject-fmt
-    rev: "v2.5.0"
+    rev: "v2.21.0"
     hooks:
       - id: pyproject-fmt

LICENSE_MicroPython

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2013-2024 Damien P. George
+Copyright (c) 2013-2025 Damien P. George
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

Makefile

@@ -375,5 +375,6 @@ coverage-fresh:
 	make -j -C ports/unix VARIANT=coverage
 
 .PHONY: run-tests
+# If TESTS="abc.py def.py" is specified as an arg, run only those tests. Otherwise, run all tests.
 run-tests:
-	cd tests; MICROPY_MICROPYTHON=../ports/unix/build-coverage/micropython ./run-tests.py
+	cd tests; MICROPY_MICROPYTHON=../ports/unix/build-coverage/micropython ./run-tests.py $(TESTS)

docs/library/collections.rst

@@ -109,3 +109,19 @@ Classes
         a 2
         w 5
         b 3
+
+    .. method:: OrderedDict.popitem()
+
+        Remove and return a (key, value) pair from the dictionary.
+        Pairs are returned in LIFO order.
+
+        .. admonition:: Difference to CPython
+            :class: attention
+
+            ``OrderedDict.popitem()`` does not support the ``last=False`` argument and
+            will always remove and return the last item if present.
+
+            A workaround for this is to use ``pop(<first_key>)`` to remove the first item::
+
+                first_key = next(iter(d))
+                d.pop(first_key)

docs/library/platform.rst

@@ -36,3 +36,11 @@ Functions
    Returns a tuple of strings *(lib, version)*, where *lib* is the name of the
    libc that MicroPython is linked to, and *version* the corresponding version
    of this libc.
+
+.. function:: processor()
+
+   Returns a string with a detailed name of the processor, if one is available.
+   If no name for the processor is known, it will return an empty string
+   instead.
+
+   This is currently available only on RISC-V targets (both 32 and 64 bits).

docs/library/re.rst

@@ -154,15 +154,25 @@ Regex objects
 Compiled regular expression. Instances of this class are created using
 `re.compile()`.
 
-.. method:: regex.match(string)
-            regex.search(string)
+.. method:: regex.match(string, [pos, [endpos]])
+            regex.search(string, [pos, [endpos]])
             regex.sub(replace, string, count=0, flags=0, /)
 
    Similar to the module-level functions :meth:`match`, :meth:`search`
    and :meth:`sub`.
    Using methods is (much) more efficient if the same regex is applied to
    multiple strings.
 
+   The optional second parameter *pos* gives an index in the string where the
+   search is to start; it defaults to ``0``. This is not completely equivalent
+   to slicing the string; the ``'^'`` pattern character matches at the real
+   beginning of the string and at positions just after a newline, but not
+   necessarily at the index where the search is to start.
+
+   The optional parameter *endpos* limits how far the string will be searched;
+   it will be as if the string is *endpos* characters long, so only the
+   characters from *pos* to ``endpos - 1`` will be searched for a match.
+
 .. method:: regex.split(string, max_split=-1, /)
 
    Split a *string* using regex. If *max_split* is given, it specifies

docs/library/sys.rst

@@ -12,17 +12,9 @@ Functions
 .. function:: exit(retval=0, /)
 
    Terminate current program with a given exit code. Underlyingly, this
-   function raise as `SystemExit` exception. If an argument is given, its
+   function raises a `SystemExit` exception. If an argument is given, its
    value given as an argument to `SystemExit`.
 
-.. function:: print_exception(exc, file=sys.stdout, /)
-
-   This function is deprecated and will be removed starting in
-   CircuitPython 10.x, `traceback.print_exception()` should be used instead.
-
-   Print exception with a traceback to a file-like object *file* (or
-   `sys.stdout` by default).
-
    .. admonition:: Difference to CPython
       :class: attention
 
@@ -52,6 +44,8 @@ Constants
    * *version* - tuple (major, minor, micro), e.g. (1, 7, 0)
    * *_machine* - string describing the underlying machine
    * *_mpy* - supported mpy file-format version (optional attribute)
+   * *_build* - string that can help identify the configuration that
+     MicroPython was built with
 
    This object is the recommended way to distinguish CircuitPython from other
    Python implementations (note that it still may not exist in the very
@@ -116,15 +110,15 @@ Constants
 
 .. data:: stderr
 
-   Standard error ``stream``.
+   Standard error `stream`.
 
 .. data:: stdin
 
-   Standard input ``stream``.
+   Standard input `stream`.
 
 .. data:: stdout
 
-   Standard output ``stream``.
+   Standard output `stream`.
 
 .. data:: version
 

docs/reference/glossary.rst

@@ -186,6 +186,13 @@ Glossary
         Most MicroPython boards make a REPL available over a UART, and this is
         typically accessible on a host PC via USB.
 
+    small integer
+        MicroPython optimises the internal representation of integers such that
+        "small" values do not take up space on the heap, and calculations with
+        them do not require heap allocation. On most 32-bit ports, this
+        corresponds to values in the interval ``-2**30 <= x < 2**30``, but this
+        should be considered an implementation detail and not relied upon.
+
     stream
         Also known as a "file-like object". A Python object which provides
         sequential read-write access to the underlying data. A stream object

extmod/extmod.mk

@@ -162,7 +162,7 @@ endif
 
 ifeq ($(MICROPY_VFS_LFS2),1)
 CFLAGS_EXTMOD += -DMICROPY_VFS_LFS2=1
-CFLAGS_THIRDPARTY += -DLFS2_NO_MALLOC -DLFS2_NO_DEBUG -DLFS2_NO_WARN -DLFS2_NO_ERROR -DLFS2_NO_ASSERT
+CFLAGS_THIRDPARTY += -DLFS2_NO_MALLOC -DLFS2_NO_DEBUG -DLFS2_NO_WARN -DLFS2_NO_ERROR -DLFS2_NO_ASSERT -DLFS2_DEFINES=extmod/littlefs-include/lfs2_defines.h
 SRC_THIRDPARTY_C += $(addprefix $(LITTLEFS_DIR)/,\
 	lfs2.c \
 	lfs2_util.c \
@@ -461,7 +461,7 @@ ESP_HOSTED_SRC_C = $(addprefix $(ESP_HOSTED_DIR)/,\
 	)
 
 ifeq ($(MICROPY_PY_BLUETOOTH),1)
-ESP_HOSTED_SRC_C += $(ESP_HOSTED_DIR)/esp_hosted_bthci.c
+ESP_HOSTED_SRC_C += $(ESP_HOSTED_DIR)/esp_hosted_bthci_uart.c
 endif
 
 # Include the protobuf-c support functions

extmod/modjson.c

@@ -227,7 +227,8 @@ static mp_obj_t _mod_json_load(mp_obj_t stream_obj, bool return_first_json) {
     for (;;) {
     cont:
         if (S_END(s)) {
-            break;
+            // Input finished abruptly in the middle of a composite entity.
+            goto fail;
         }
         mp_obj_t next = MP_OBJ_NULL;
         bool enter = false;