Apply ruff:pyupgrade rule UP025

UP025 Remove unicode literals from strings

Author: DimitriPapadopoulos

doc/source/conf.py

@@ -35,8 +35,8 @@
 master_doc = 'index'
 
 # General information about the project.
-project = u'CFFI'
-copyright = u'2012-2025, Armin Rigo, Maciej Fijalkowski'
+project = 'CFFI'
+copyright = '2012-2025, Armin Rigo, Maciej Fijalkowski'
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
@@ -170,8 +170,8 @@
 # Grouping the document tree into LaTeX files. List of tuples
 # (source start file, target name, title, author, documentclass [howto/manual]).
 latex_documents = [
-  ('index', 'CFFI.tex', u'CFFI Documentation',
-   u'Armin Rigo, Maciej Fijalkowski', 'manual'),
+  ('index', 'CFFI.tex', 'CFFI Documentation',
+   'Armin Rigo, Maciej Fijalkowski', 'manual'),
 ]
 
 # The name of an image file (relative to this directory) to place at the top of

src/c/test_c.py

@@ -4180,8 +4180,8 @@ def test_unpack():
     for typename in ["wchar_t", "char16_t", "char32_t"]:
         BWChar = new_primitive_type(typename)
         BArray = new_array_type(new_pointer_type(BWChar), 10)   # wchar_t[10]
-        p = newp(BArray, u"abc\x00def")
-        assert unpack(p, 10) == u"abc\x00def\x00\x00\x00"
+        p = newp(BArray, "abc\x00def")
+        assert unpack(p, 10) == "abc\x00def\x00\x00\x00"
 
     for typename, samples in [
             ("uint8_t",  [0, 2**8-1]),

testing/embedding/withunicode.py

@@ -8,7 +8,7 @@
 
 ffi = cffi.FFI()
 
-ffi.embedding_api(u"""
+ffi.embedding_api("""
     int add1(int, int);
 """)