diff --git a/.flake8 b/.flake8
index 565d47b..b8aba99 100644
--- a/.flake8
+++ b/.flake8
@@ -13,8 +13,7 @@ exclude =
     build,
     dist,
     .conda,
-    .venv,
-    tests/autogenerated_*
+    .venv
 
 # Enable specific plugins or options
 # Example: Enabling flake8-docstrings
@@ -22,4 +21,4 @@ select = C,E,F,W,D
 
 # Specify custom error codes to ignore or enable
 per-file-ignores =
-    tests/*: D
\ No newline at end of file
+    tests/*: D, E712
\ No newline at end of file
diff --git a/src/copapy/stencil_db.py b/src/copapy/stencil_db.py
index 7593b0b..cd6b750 100644
--- a/src/copapy/stencil_db.py
+++ b/src/copapy/stencil_db.py
@@ -62,10 +62,12 @@ def get_last_call_in_function(func: elf_symbol) -> int:
     assert reloc, f'No call function in stencil function {func.name}.'
     return reloc.fields['r_offset'] - func.fields['st_value'] - reloc.fields['r_addend'] - LENGTH_CALL_INSTRUCTION
 
+
 def symbol_is_stencil(sym: elf_symbol) -> bool:
     return (sym.info == 'STT_FUNC' and len(sym.relocations) > 0 and
             sym.relocations[-1].symbol.info == 'STT_NOTYPE')
 
+
 class stencil_database():
     """A class for loading and querying a stencil database from an ELF object file
 
@@ -90,7 +92,7 @@ class stencil_database():
         self.stencil_definitions = {s.name: get_return_function_type(s)
                                     for s in self.elf.symbols
                                     if s.info == 'STT_FUNC'}
-        
+
         #self.data = {s.name: strip_function(s)
         #             for s in self.elf.symbols
         #             if s.info == 'STT_FUNC'}
@@ -136,7 +138,7 @@ class stencil_database():
 
     def get_stencil_code(self, name: str) -> bytes:
         """Return the striped function code for a provided function name
-        
+
         Args:
             name: function name
 
@@ -144,7 +146,7 @@ class stencil_database():
             Striped function code
         """
         return strip_function(self.elf.symbols[name])
-    
+
     def get_sub_functions(self, names: Iterable[str]) -> set[str]:
         name_set: set[str] = set()
         for name in names:
@@ -172,4 +174,4 @@ class stencil_database():
             index = get_last_call_in_function(func)
             return func.data[index + LENGTH_CALL_INSTRUCTION:]
         else:
-            return func.data
\ No newline at end of file
+            return func.data
diff --git a/tools/extract_code.py b/tools/extract_code.py
index ab7d4ad..230f89a 100644
--- a/tools/extract_code.py
+++ b/tools/extract_code.py
@@ -59,7 +59,7 @@ if __name__ == "__main__":
             rel_entr_point = dr.read_int()
             print(f"ENTRY_POINT rel_entr_point={rel_entr_point}")
         elif com == Command.RUN_PROG:
-            print(f"RUN_PROG")
+            print("RUN_PROG")
         elif com == Command.READ_DATA:
             offs = dr.read_int()
             size = dr.read_int()
diff --git a/tools/generate_stencils.py b/tools/generate_stencils.py
index e88c5f6..caff4af 100644
--- a/tools/generate_stencils.py
+++ b/tools/generate_stencils.py
@@ -9,6 +9,7 @@ stencil_func_prefix = '__attribute__((naked)) '  # Remove callee prolog
 
 stack_size = 64
 
+
 def get_aux_funcs() -> str:
     return f"""
     {entry_func_prefix}int entry_function_shell(){{
@@ -17,8 +18,8 @@ def get_aux_funcs() -> str:
         result_int(0);
         return 1;
     }}
-    """ + \
-    """
+
+    """ + """
     __attribute__((noinline)) int floor_div(float arg1, float arg2) {
         float x = arg1 / arg2;
         int i = (int)x;