From 9ca5568222bb19bce86b2d32292862ca70afced7 Mon Sep 17 00:00:00 2001 From: Aarni Koskela Date: Tue, 6 Aug 2024 15:47:10 +0300 Subject: [PATCH] Normalize hex/unicode escapes to lower-case See https://docs.astral.sh/ruff/formatter/black/#hex-codes-and-unicode-sequences --- Tests/test_file_jpeg.py | 2 +- Tests/test_file_pdf.py | 4 ++-- Tests/test_file_ppm.py | 4 ++-- Tests/test_imagefont.py | 6 +++--- Tests/test_imagefontctl.py | 42 +++++++++++++++++++------------------- Tests/test_imagepalette.py | 2 +- Tests/test_pdfparser.py | 18 ++++++++-------- src/PIL/ImImagePlugin.py | 4 ++-- src/PIL/Image.py | 2 +- src/PIL/ImtImagePlugin.py | 2 +- src/PIL/JpegImagePlugin.py | 8 ++++---- src/PIL/MpoImagePlugin.py | 4 ++-- src/PIL/PcxImagePlugin.py | 2 +- src/PIL/PdfParser.py | 36 ++++++++++++++++---------------- src/PIL/PngImagePlugin.py | 2 +- src/PIL/PpmImagePlugin.py | 2 +- src/PIL/TiffImagePlugin.py | 16 +++++++-------- 17 files changed, 78 insertions(+), 78 deletions(-) diff --git a/Tests/test_file_jpeg.py b/Tests/test_file_jpeg.py index 7c4d1b259..ac469a92f 100644 --- a/Tests/test_file_jpeg.py +++ b/Tests/test_file_jpeg.py @@ -917,7 +917,7 @@ class TestFileJpeg: def test_jpeg_magic_number(self, monkeypatch: pytest.MonkeyPatch) -> None: size = 4097 - buffer = BytesIO(b"\xFF" * size) # Many xFF bytes + buffer = BytesIO(b"\xff" * size) # Many FF bytes max_pos = 0 orig_read = buffer.read diff --git a/Tests/test_file_pdf.py b/Tests/test_file_pdf.py index 1d5001b1a..815686a52 100644 --- a/Tests/test_file_pdf.py +++ b/Tests/test_file_pdf.py @@ -264,7 +264,7 @@ def test_pdf_append(tmp_path: Path) -> None: # append some info pdf.info.Title = "abc" pdf.info.Author = "def" - pdf.info.Subject = "ghi\uABCD" + pdf.info.Subject = "ghi\uabcd" pdf.info.Keywords = "qw)e\\r(ty" pdf.info.Creator = "hopper()" pdf.start_writing() @@ -292,7 +292,7 @@ def test_pdf_append(tmp_path: Path) -> None: assert pdf.info.Title == "abc" assert pdf.info.Producer == "PdfParser" assert pdf.info.Keywords == "qw)e\\r(ty" - assert pdf.info.Subject == "ghi\uABCD" + assert pdf.info.Subject == "ghi\uabcd" assert b"CreationDate" in pdf.info assert b"ModDate" in pdf.info check_pdf_pages_consistency(pdf) diff --git a/Tests/test_file_ppm.py b/Tests/test_file_ppm.py index 0a61830a4..38fbd67a4 100644 --- a/Tests/test_file_ppm.py +++ b/Tests/test_file_ppm.py @@ -49,7 +49,7 @@ def test_sanity() -> None: (b"P5 3 1 257 \x00\x00\x00\x80\x01\x01", "I", (0, 32640, 65535)), # P6 with maxval < 255 ( - b"P6 3 1 17 \x00\x01\x02\x08\x09\x0A\x0F\x10\x11", + b"P6 3 1 17 \x00\x01\x02\x08\x09\x0a\x0f\x10\x11", "RGB", ( (0, 15, 30), @@ -60,7 +60,7 @@ def test_sanity() -> None: # P6 with maxval > 255 ( b"P6 3 1 257 \x00\x00\x00\x01\x00\x02" - b"\x00\x80\x00\x81\x00\x82\x01\x00\x01\x01\xFF\xFF", + b"\x00\x80\x00\x81\x00\x82\x01\x00\x01\x01\xff\xff", "RGB", ( (0, 1, 2), diff --git a/Tests/test_imagefont.py b/Tests/test_imagefont.py index 340cc4742..05db14ed2 100644 --- a/Tests/test_imagefont.py +++ b/Tests/test_imagefont.py @@ -516,7 +516,7 @@ def test_render_empty(font: ImageFont.FreeTypeFont) -> None: def test_unicode_extended(layout_engine: ImageFont.Layout) -> None: # issue #3777 - text = "A\u278A\U0001F12B" + text = "A\u278a\U0001f12b" target = "Tests/images/unicode_extended.png" ttf = ImageFont.truetype( @@ -985,7 +985,7 @@ def test_sbix(layout_engine: ImageFont.Layout) -> None: im = Image.new("RGB", (400, 400), "white") d = ImageDraw.Draw(im) - d.text((50, 50), "\uE901", font=font, embedded_color=True) + d.text((50, 50), "\ue901", font=font, embedded_color=True) assert_image_similar_tofile(im, "Tests/images/chromacheck-sbix.png", 1) except OSError as e: # pragma: no cover @@ -1002,7 +1002,7 @@ def test_sbix_mask(layout_engine: ImageFont.Layout) -> None: im = Image.new("RGB", (400, 400), "white") d = ImageDraw.Draw(im) - d.text((50, 50), "\uE901", (100, 0, 0), font=font) + d.text((50, 50), "\ue901", (100, 0, 0), font=font) assert_image_similar_tofile(im, "Tests/images/chromacheck-sbix_mask.png", 1) except OSError as e: # pragma: no cover diff --git a/Tests/test_imagefontctl.py b/Tests/test_imagefontctl.py index 24c7b871a..c85eb499c 100644 --- a/Tests/test_imagefontctl.py +++ b/Tests/test_imagefontctl.py @@ -229,7 +229,7 @@ def test_getlength( @pytest.mark.parametrize("direction", ("ltr", "ttb")) @pytest.mark.parametrize( "text", - ("i" + ("\u030C" * 15) + "i", "i" + "\u032C" * 15 + "i", "\u035Cii", "i\u0305i"), + ("i" + ("\u030c" * 15) + "i", "i" + "\u032c" * 15 + "i", "\u035cii", "i\u0305i"), ids=("caron-above", "caron-below", "double-breve", "overline"), ) def test_getlength_combine(mode: str, direction: str, text: str) -> None: @@ -272,27 +272,27 @@ def test_anchor_ttb(anchor: str) -> None: combine_tests = ( # extends above (e.g. issue #4553) - ("caron", "a\u030C\u030C\u030C\u030C\u030Cb", None, None, 0.08), - ("caron_la", "a\u030C\u030C\u030C\u030C\u030Cb", "la", None, 0.08), - ("caron_lt", "a\u030C\u030C\u030C\u030C\u030Cb", "lt", None, 0.08), - ("caron_ls", "a\u030C\u030C\u030C\u030C\u030Cb", "ls", None, 0.08), - ("caron_ttb", "ca" + ("\u030C" * 15) + "b", None, "ttb", 0.3), - ("caron_ttb_lt", "ca" + ("\u030C" * 15) + "b", "lt", "ttb", 0.3), + ("caron", "a\u030c\u030c\u030c\u030c\u030cb", None, None, 0.08), + ("caron_la", "a\u030c\u030c\u030c\u030c\u030cb", "la", None, 0.08), + ("caron_lt", "a\u030c\u030c\u030c\u030c\u030cb", "lt", None, 0.08), + ("caron_ls", "a\u030c\u030c\u030c\u030c\u030cb", "ls", None, 0.08), + ("caron_ttb", "ca" + ("\u030c" * 15) + "b", None, "ttb", 0.3), + ("caron_ttb_lt", "ca" + ("\u030c" * 15) + "b", "lt", "ttb", 0.3), # extends below - ("caron_below", "a\u032C\u032C\u032C\u032C\u032Cb", None, None, 0.02), - ("caron_below_ld", "a\u032C\u032C\u032C\u032C\u032Cb", "ld", None, 0.02), - ("caron_below_lb", "a\u032C\u032C\u032C\u032C\u032Cb", "lb", None, 0.02), - ("caron_below_ls", "a\u032C\u032C\u032C\u032C\u032Cb", "ls", None, 0.02), - ("caron_below_ttb", "a" + ("\u032C" * 15) + "b", None, "ttb", 0.03), - ("caron_below_ttb_lb", "a" + ("\u032C" * 15) + "b", "lb", "ttb", 0.03), + ("caron_below", "a\u032c\u032c\u032c\u032c\u032cb", None, None, 0.02), + ("caron_below_ld", "a\u032c\u032c\u032c\u032c\u032cb", "ld", None, 0.02), + ("caron_below_lb", "a\u032c\u032c\u032c\u032c\u032cb", "lb", None, 0.02), + ("caron_below_ls", "a\u032c\u032c\u032c\u032c\u032cb", "ls", None, 0.02), + ("caron_below_ttb", "a" + ("\u032c" * 15) + "b", None, "ttb", 0.03), + ("caron_below_ttb_lb", "a" + ("\u032c" * 15) + "b", "lb", "ttb", 0.03), # extends to the right (e.g. issue #3745) - ("double_breve_below", "a\u035Ci", None, None, 0.02), - ("double_breve_below_ma", "a\u035Ci", "ma", None, 0.02), - ("double_breve_below_ra", "a\u035Ci", "ra", None, 0.02), - ("double_breve_below_ttb", "a\u035Cb", None, "ttb", 0.02), - ("double_breve_below_ttb_rt", "a\u035Cb", "rt", "ttb", 0.02), - ("double_breve_below_ttb_mt", "a\u035Cb", "mt", "ttb", 0.02), - ("double_breve_below_ttb_st", "a\u035Cb", "st", "ttb", 0.02), + ("double_breve_below", "a\u035ci", None, None, 0.02), + ("double_breve_below_ma", "a\u035ci", "ma", None, 0.02), + ("double_breve_below_ra", "a\u035ci", "ra", None, 0.02), + ("double_breve_below_ttb", "a\u035cb", None, "ttb", 0.02), + ("double_breve_below_ttb_rt", "a\u035cb", "rt", "ttb", 0.02), + ("double_breve_below_ttb_mt", "a\u035cb", "mt", "ttb", 0.02), + ("double_breve_below_ttb_st", "a\u035cb", "st", "ttb", 0.02), # extends to the left (fail=0.064) ("overline", "i\u0305", None, None, 0.02), ("overline_la", "i\u0305", "la", None, 0.02), @@ -346,7 +346,7 @@ def test_combine_multiline(anchor: str, align: str) -> None: path = f"Tests/images/test_combine_multiline_{anchor}_{align}.png" f = ImageFont.truetype("Tests/fonts/NotoSans-Regular.ttf", 48) - text = "i\u0305\u035C\ntext" # i with overline and double breve, and a word + text = "i\u0305\u035c\ntext" # i with overline and double breve, and a word im = Image.new("RGB", (400, 400), "white") d = ImageDraw.Draw(im) diff --git a/Tests/test_imagepalette.py b/Tests/test_imagepalette.py index 6cf0079dd..6d0e6f36f 100644 --- a/Tests/test_imagepalette.py +++ b/Tests/test_imagepalette.py @@ -189,7 +189,7 @@ def test_2bit_palette(tmp_path: Path) -> None: rgb = b"\x00" * 2 + b"\x01" * 2 + b"\x02" * 2 img = Image.frombytes("P", (6, 1), rgb) - img.putpalette(b"\xFF\x00\x00\x00\xFF\x00\x00\x00\xFF") # RGB + img.putpalette(b"\xff\x00\x00\x00\xff\x00\x00\x00\xff") # RGB img.save(outfile, format="PNG") assert_image_equal_tofile(img, outfile) diff --git a/Tests/test_pdfparser.py b/Tests/test_pdfparser.py index f6b12cb20..d85fb1212 100644 --- a/Tests/test_pdfparser.py +++ b/Tests/test_pdfparser.py @@ -20,10 +20,10 @@ from PIL.PdfParser import ( def test_text_encode_decode() -> None: - assert encode_text("abc") == b"\xFE\xFF\x00a\x00b\x00c" - assert decode_text(b"\xFE\xFF\x00a\x00b\x00c") == "abc" + assert encode_text("abc") == b"\xfe\xff\x00a\x00b\x00c" + assert decode_text(b"\xfe\xff\x00a\x00b\x00c") == "abc" assert decode_text(b"abc") == "abc" - assert decode_text(b"\x1B a \x1C") == "\u02D9 a \u02DD" + assert decode_text(b"\x1b a \x1c") == "\u02d9 a \u02dd" def test_indirect_refs() -> None: @@ -45,8 +45,8 @@ def test_parsing() -> None: assert PdfParser.get_value(b"false%", 0) == (False, 5) assert PdfParser.get_value(b"null<", 0) == (None, 4) assert PdfParser.get_value(b"%cmt\n %cmt\n 123\n", 0) == (123, 15) - assert PdfParser.get_value(b"<901FA3>", 0) == (b"\x90\x1F\xA3", 8) - assert PdfParser.get_value(b"asd < 9 0 1 f A > qwe", 3) == (b"\x90\x1F\xA0", 17) + assert PdfParser.get_value(b"<901FA3>", 0) == (b"\x90\x1f\xa3", 8) + assert PdfParser.get_value(b"asd < 9 0 1 f A > qwe", 3) == (b"\x90\x1f\xa0", 17) assert PdfParser.get_value(b"(asd)", 0) == (b"asd", 5) assert PdfParser.get_value(b"(asd(qwe)zxc)zzz(aaa)", 0) == (b"asd(qwe)zxc", 13) assert PdfParser.get_value(b"(Two \\\nwords.)", 0) == (b"Two words.", 14) @@ -56,9 +56,9 @@ def test_parsing() -> None: assert PdfParser.get_value(b"(One\\(paren).", 0) == (b"One(paren", 12) assert PdfParser.get_value(b"(One\\)paren).", 0) == (b"One)paren", 12) assert PdfParser.get_value(b"(\\0053)", 0) == (b"\x053", 7) - assert PdfParser.get_value(b"(\\053)", 0) == (b"\x2B", 6) - assert PdfParser.get_value(b"(\\53)", 0) == (b"\x2B", 5) - assert PdfParser.get_value(b"(\\53a)", 0) == (b"\x2Ba", 6) + assert PdfParser.get_value(b"(\\053)", 0) == (b"\x2b", 6) + assert PdfParser.get_value(b"(\\53)", 0) == (b"\x2b", 5) + assert PdfParser.get_value(b"(\\53a)", 0) == (b"\x2ba", 6) assert PdfParser.get_value(b"(\\1111)", 0) == (b"\x491", 7) assert PdfParser.get_value(b" 123 (", 0) == (123, 4) assert round(abs(PdfParser.get_value(b" 123.4 %", 0)[0] - 123.4), 7) == 0 @@ -118,7 +118,7 @@ def test_pdf_repr() -> None: assert pdf_repr(None) == b"null" assert pdf_repr(b"a)/b\\(c") == rb"(a\)/b\\\(c)" assert pdf_repr([123, True, {"a": PdfName(b"b")}]) == b"[ 123 true <<\n/a /b\n>> ]" - assert pdf_repr(PdfBinary(b"\x90\x1F\xA0")) == b"<901FA0>" + assert pdf_repr(PdfBinary(b"\x90\x1f\xa0")) == b"<901FA0>" def test_duplicate_xref_entry() -> None: diff --git a/src/PIL/ImImagePlugin.py b/src/PIL/ImImagePlugin.py index 2fb7ecd52..c90e028c8 100644 --- a/src/PIL/ImImagePlugin.py +++ b/src/PIL/ImImagePlugin.py @@ -145,7 +145,7 @@ class ImImageFile(ImageFile.ImageFile): if s == b"\r": continue - if not s or s == b"\0" or s == b"\x1A": + if not s or s == b"\0" or s == b"\x1a": break # FIXME: this may read whole file if not a text file @@ -209,7 +209,7 @@ class ImImageFile(ImageFile.ImageFile): self._mode = self.info[MODE] # Skip forward to start of image data - while s and s[:1] != b"\x1A": + while s and s[:1] != b"\x1a": s = self.fp.read(1) if not s: msg = "File truncated" diff --git a/src/PIL/Image.py b/src/PIL/Image.py index ebf4f46c4..4c491e3f8 100644 --- a/src/PIL/Image.py +++ b/src/PIL/Image.py @@ -3908,7 +3908,7 @@ class Exif(_ExifBase): return self._fixup_dict(dict(info)) def _get_head(self) -> bytes: - version = b"\x2B" if self.bigtiff else b"\x2A" + version = b"\x2b" if self.bigtiff else b"\x2a" if self.endian == "<": head = b"II" + version + b"\x00" + o32le(8) else: diff --git a/src/PIL/ImtImagePlugin.py b/src/PIL/ImtImagePlugin.py index abb3fb762..7ea9f0272 100644 --- a/src/PIL/ImtImagePlugin.py +++ b/src/PIL/ImtImagePlugin.py @@ -55,7 +55,7 @@ class ImtImageFile(ImageFile.ImageFile): if not s: break - if s == b"\x0C": + if s == b"\x0c": # image data begins self.tile = [ ( diff --git a/src/PIL/JpegImagePlugin.py b/src/PIL/JpegImagePlugin.py index 52dfe4c32..5876d19dc 100644 --- a/src/PIL/JpegImagePlugin.py +++ b/src/PIL/JpegImagePlugin.py @@ -322,7 +322,7 @@ MARKER = { def _accept(prefix: bytes) -> bool: # Magic number was taken from https://en.wikipedia.org/wiki/JPEG - return prefix[:3] == b"\xFF\xD8\xFF" + return prefix[:3] == b"\xff\xd8\xff" ## @@ -339,7 +339,7 @@ class JpegImageFile(ImageFile.ImageFile): if not _accept(s): msg = "not a JPEG file" raise SyntaxError(msg) - s = b"\xFF" + s = b"\xff" # Create attributes self.bits = self.layers = 0 @@ -405,7 +405,7 @@ class JpegImageFile(ImageFile.ImageFile): # Premature EOF. # Pretend file is finished adding EOI marker self._ended = True - return b"\xFF\xD9" + return b"\xff\xd9" return s @@ -759,7 +759,7 @@ def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None: for marker in markers: size = o16(2 + ICC_OVERHEAD_LEN + len(marker)) extra += ( - b"\xFF\xE2" + b"\xff\xe2" + size + b"ICC_PROFILE\0" + o8(i) diff --git a/src/PIL/MpoImagePlugin.py b/src/PIL/MpoImagePlugin.py index 5ed9f56a1..3890cf943 100644 --- a/src/PIL/MpoImagePlugin.py +++ b/src/PIL/MpoImagePlugin.py @@ -50,7 +50,7 @@ def _save_all(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None: if not offsets: # APP2 marker im_frame.encoderinfo["extra"] = ( - b"\xFF\xE2" + struct.pack(">H", 6 + 82) + b"MPF\0" + b" " * 82 + b"\xff\xe2" + struct.pack(">H", 6 + 82) + b"MPF\0" + b" " * 82 ) exif = im_frame.encoderinfo.get("exif") if isinstance(exif, Image.Exif): @@ -83,7 +83,7 @@ def _save_all(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None: ifd[0xB002] = mpentries fp.seek(mpf_offset) - fp.write(b"II\x2A\x00" + o32le(8) + ifd.tobytes(8)) + fp.write(b"II\x2a\x00" + o32le(8) + ifd.tobytes(8)) fp.seek(0, os.SEEK_END) diff --git a/src/PIL/PcxImagePlugin.py b/src/PIL/PcxImagePlugin.py index dd42003b5..a2ae8624d 100644 --- a/src/PIL/PcxImagePlugin.py +++ b/src/PIL/PcxImagePlugin.py @@ -186,7 +186,7 @@ def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None: + o16(dpi[0]) + o16(dpi[1]) + b"\0" * 24 - + b"\xFF" * 24 + + b"\xff" * 24 + b"\0" + o8(planes) + o16(stride) diff --git a/src/PIL/PdfParser.py b/src/PIL/PdfParser.py index 6fc507624..bd44917d0 100644 --- a/src/PIL/PdfParser.py +++ b/src/PIL/PdfParser.py @@ -19,14 +19,14 @@ def encode_text(s: str) -> bytes: PDFDocEncoding = { 0x16: "\u0017", - 0x18: "\u02D8", - 0x19: "\u02C7", - 0x1A: "\u02C6", - 0x1B: "\u02D9", - 0x1C: "\u02DD", - 0x1D: "\u02DB", - 0x1E: "\u02DA", - 0x1F: "\u02DC", + 0x18: "\u02d8", + 0x19: "\u02c7", + 0x1A: "\u02c6", + 0x1B: "\u02d9", + 0x1C: "\u02dd", + 0x1D: "\u02db", + 0x1E: "\u02da", + 0x1F: "\u02dc", 0x80: "\u2022", 0x81: "\u2020", 0x82: "\u2021", @@ -36,29 +36,29 @@ PDFDocEncoding = { 0x86: "\u0192", 0x87: "\u2044", 0x88: "\u2039", - 0x89: "\u203A", + 0x89: "\u203a", 0x8A: "\u2212", 0x8B: "\u2030", - 0x8C: "\u201E", - 0x8D: "\u201C", - 0x8E: "\u201D", + 0x8C: "\u201e", + 0x8D: "\u201c", + 0x8E: "\u201d", 0x8F: "\u2018", 0x90: "\u2019", - 0x91: "\u201A", + 0x91: "\u201a", 0x92: "\u2122", - 0x93: "\uFB01", - 0x94: "\uFB02", + 0x93: "\ufb01", + 0x94: "\ufb02", 0x95: "\u0141", 0x96: "\u0152", 0x97: "\u0160", 0x98: "\u0178", - 0x99: "\u017D", + 0x99: "\u017d", 0x9A: "\u0131", 0x9B: "\u0142", 0x9C: "\u0153", 0x9D: "\u0161", - 0x9E: "\u017E", - 0xA0: "\u20AC", + 0x9E: "\u017e", + 0xA0: "\u20ac", } diff --git a/src/PIL/PngImagePlugin.py b/src/PIL/PngImagePlugin.py index 910fa9755..e8c9fcaf6 100644 --- a/src/PIL/PngImagePlugin.py +++ b/src/PIL/PngImagePlugin.py @@ -1416,7 +1416,7 @@ def _save( chunk(fp, b"tRNS", transparency[:alpha_bytes]) else: transparency = max(0, min(255, transparency)) - alpha = b"\xFF" * transparency + b"\0" + alpha = b"\xff" * transparency + b"\0" chunk(fp, b"tRNS", alpha[:alpha_bytes]) elif im.mode in ("1", "L", "I", "I;16"): transparency = max(0, min(65535, transparency)) diff --git a/src/PIL/PpmImagePlugin.py b/src/PIL/PpmImagePlugin.py index 16c9ccbba..d431c3071 100644 --- a/src/PIL/PpmImagePlugin.py +++ b/src/PIL/PpmImagePlugin.py @@ -228,7 +228,7 @@ class PpmPlainDecoder(ImageFile.PyDecoder): msg = b"Invalid token for this mode: %s" % bytes([token]) raise ValueError(msg) data = (data + tokens)[:total_bytes] - invert = bytes.maketrans(b"01", b"\xFF\x00") + invert = bytes.maketrans(b"01", b"\xff\x00") return data.translate(invert) def _decode_blocks(self, maxval: int) -> bytearray: diff --git a/src/PIL/TiffImagePlugin.py b/src/PIL/TiffImagePlugin.py index d9d1bab5a..83c8586e3 100644 --- a/src/PIL/TiffImagePlugin.py +++ b/src/PIL/TiffImagePlugin.py @@ -272,12 +272,12 @@ OPEN_INFO = { MAX_SAMPLESPERPIXEL = max(len(key_tp[4]) for key_tp in OPEN_INFO) PREFIXES = [ - b"MM\x00\x2A", # Valid TIFF header with big-endian byte order - b"II\x2A\x00", # Valid TIFF header with little-endian byte order - b"MM\x2A\x00", # Invalid TIFF header, assume big-endian - b"II\x00\x2A", # Invalid TIFF header, assume little-endian - b"MM\x00\x2B", # BigTIFF with big-endian byte order - b"II\x2B\x00", # BigTIFF with little-endian byte order + b"MM\x00\x2a", # Valid TIFF header with big-endian byte order + b"II\x2a\x00", # Valid TIFF header with little-endian byte order + b"MM\x2a\x00", # Invalid TIFF header, assume big-endian + b"II\x00\x2a", # Invalid TIFF header, assume little-endian + b"MM\x00\x2b", # BigTIFF with big-endian byte order + b"II\x2b\x00", # BigTIFF with little-endian byte order ] if not getattr(Image.core, "libtiff_support_custom_tags", True): @@ -933,9 +933,9 @@ class ImageFileDirectory_v2(_IFDv2Base): is_ifd = typ == TiffTags.LONG and isinstance(value, dict) if is_ifd: if self._endian == "<": - ifh = b"II\x2A\x00\x08\x00\x00\x00" + ifh = b"II\x2a\x00\x08\x00\x00\x00" else: - ifh = b"MM\x00\x2A\x00\x00\x00\x08" + ifh = b"MM\x00\x2a\x00\x00\x00\x08" ifd = ImageFileDirectory_v2(ifh, group=tag) values = self._tags_v2[tag] for ifd_tag, ifd_value in values.items():