Added underscores for readability

Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>

Tests/test_imagefont.py

@@ -1040,21 +1040,21 @@ def test_render_mono_size():
 
 def test_too_many_characters(font):
     with pytest.raises(ValueError):
-        font.getlength("A" * 1000001)
+        font.getlength("A" * 1_000_001)
     with pytest.raises(ValueError):
-        font.getbbox("A" * 1000001)
+        font.getbbox("A" * 1_000_001)
     with pytest.raises(ValueError):
-        font.getmask2("A" * 1000001)
+        font.getmask2("A" * 1_000_001)
 
     transposed_font = ImageFont.TransposedFont(font)
     with pytest.raises(ValueError):
-        transposed_font.getlength("A" * 1000001)
+        transposed_font.getlength("A" * 1_000_001)
 
     default_font = ImageFont.load_default()
     with pytest.raises(ValueError):
-        default_font.getlength("A" * 1000001)
+        default_font.getlength("A" * 1_000_001)
     with pytest.raises(ValueError):
-        default_font.getbbox("A" * 1000001)
+        default_font.getbbox("A" * 1_000_001)
 
 
 @pytest.mark.parametrize(

src/PIL/ImageFont.py

@@ -41,7 +41,7 @@ class Layout(IntEnum):
     RAQM = 1
 
 
-MAX_STRING_LENGTH = 1000000
+MAX_STRING_LENGTH = 1_000_000
 
 
 try: