scripts/startup/bl_operators/anim.py

@@ -20,7 +20,7 @@ from bpy.app.translations import pgettext_tip as tip_
 
 
 class ANIM_OT_keying_set_export(Operator):
-    """Export Keying Set to a python script"""
+    """Export Keying Set to a Python script"""
     bl_idname = "anim.keying_set_export"
     bl_label = "Export Keying Set..."
 
@@ -38,7 +38,7 @@ class ANIM_OT_keying_set_export(Operator):
         options={'HIDDEN'},
     )
     filter_python: BoolProperty(
-        name="Filter python",
+        name="Filter Python",
         default=True,
         options={'HIDDEN'},
     )

scripts/startup/bl_operators/console.py

@@ -16,7 +16,7 @@ def _lang_module_get(sc):
 
 
 class ConsoleExec(Operator):
-    """Execute the current console line as a python expression"""
+    """Execute the current console line as a Python expression"""
     bl_idname = "console.execute"
     bl_label = "Console Execute"
     bl_options = {'UNDO_GROUPED'}

scripts/startup/bl_operators/file.py

@@ -78,7 +78,7 @@ class WM_OT_previews_batch_generate(Operator):
     use_trusted: BoolProperty(
         default=False,
         name="Trusted Blend Files",
-        description="Enable python evaluation for selected files",
+        description="Enable Python evaluation for selected files",
     )
     use_backups: BoolProperty(
         default=True,
@@ -188,7 +188,7 @@ class WM_OT_previews_batch_clear(Operator):
     use_trusted: BoolProperty(
         default=False,
         name="Trusted Blend Files",
-        description="Enable python evaluation for selected files",
+        description="Enable Python evaluation for selected files",
     )
     use_backups: BoolProperty(
         default=True,

scripts/startup/bl_operators/userpref.py

@@ -173,7 +173,7 @@ class PREFERENCES_OT_keyconfig_test(Operator):
 
 
 class PREFERENCES_OT_keyconfig_import(Operator):
-    """Import key configuration from a python script"""
+    """Import key configuration from a Python script"""
     bl_idname = "preferences.keyconfig_import"
     bl_label = "Import Key Configuration..."
 
@@ -192,7 +192,7 @@ class PREFERENCES_OT_keyconfig_import(Operator):
         options={'HIDDEN'},
     )
     filter_python: BoolProperty(
-        name="Filter python",
+        name="Filter Python",
         default=True,
         options={'HIDDEN'},
     )
@@ -244,7 +244,7 @@ class PREFERENCES_OT_keyconfig_import(Operator):
 
 
 class PREFERENCES_OT_keyconfig_export(Operator):
-    """Export key configuration to a python script"""
+    """Export key configuration to a Python script"""
     bl_idname = "preferences.keyconfig_export"
     bl_label = "Export Key Configuration..."
 
@@ -268,7 +268,7 @@ class PREFERENCES_OT_keyconfig_export(Operator):
         options={'HIDDEN'},
     )
     filter_python: BoolProperty(
-        name="Filter python",
+        name="Filter Python",
         default=True,
         options={'HIDDEN'},
     )
@@ -610,7 +610,7 @@ class PREFERENCES_OT_addon_install(Operator):
         options={'HIDDEN'},
     )
     filter_python: BoolProperty(
-        name="Filter python",
+        name="Filter Python",
         default=True,
         options={'HIDDEN'},
     )

scripts/startup/bl_operators/wm.py

@@ -746,7 +746,7 @@ class WM_OT_operator_pie_enum(Operator):
 
     data_path: StringProperty(
         name="Operator",
-        description="Operator name (in python as string)",
+        description="Operator name (in Python as string)",
         maxlen=1024,
     )
     prop_string: StringProperty(
@@ -1381,7 +1381,7 @@ rna_custom_property_type_items = (
     ('BOOL', "Boolean", "A true or false value"),
     ('BOOL_ARRAY', "Boolean Array", "An array of true or false values"),
     ('STRING', "String", "A string value"),
-    ('PYTHON', "Python", "Edit a python value directly, for unsupported property types"),
+    ('PYTHON', "Python", "Edit a Python value directly, for unsupported property types"),
 )
 
 rna_custom_property_subtype_none_item = ('NONE', "Plain Data", "Data values without special behavior")

scripts/startup/bl_ui/properties_constraint.py

@@ -831,7 +831,7 @@ class ConstraintButtonsPanel:
 
     def draw_python_constraint(self, _context):
         layout = self.layout
-        layout.label(text="Blender 2.6 doesn't support python constraints yet")
+        layout.label(text="Blender 2.6 doesn't support Python constraints yet")
 
     def draw_armature(self, context):
         layout = self.layout

source/blender/makesrna/intern/rna_armature.c

@@ -1561,9 +1561,9 @@ static void rna_def_armature(BlenderRNA *brna)
   RNA_def_property_boolean_sdna(prop, NULL, "layer_protected", 1);
   RNA_def_property_array(prop, 32);
   RNA_def_property_ui_text(prop,
-                           "Layer Proxy Protection",
+                           "Layer Override Protection",
-                           "Protected layers in Proxy Instances are restored to Proxy settings "
+                           "Protected layers in overridden instances are restored to "
-                           "on file reload and undo");
+                           "their original settings on file reload and undo");
   RNA_def_property_update(prop, 0, "rna_Armature_redraw_data");
 
   /* flag */

source/blender/makesrna/intern/rna_brush.c

@@ -3484,7 +3484,10 @@ static void rna_def_brush(BlenderRNA *brna)
 
   prop = RNA_def_property(srna, "use_plane_trim", PROP_BOOLEAN, PROP_NONE);
   RNA_def_property_boolean_sdna(prop, NULL, "flag", BRUSH_PLANE_TRIM);
-  RNA_def_property_ui_text(prop, "Use Plane Trim", "Enable Plane Trim");
+  RNA_def_property_ui_text(
+      prop,
+      "Use Plane Trim",
+      "Limit the distance from the offset plane that a vertex can be affected");
   RNA_def_property_update(prop, 0, "rna_Brush_update");
 
   prop = RNA_def_property(srna, "use_frontface", PROP_BOOLEAN, PROP_NONE);

source/blender/makesrna/intern/rna_curve.c

@@ -1018,7 +1018,7 @@ static void rna_def_path(BlenderRNA *UNUSED(brna), StructRNA *srna)
 
   prop = RNA_def_property(srna, "use_path_follow", PROP_BOOLEAN, PROP_NONE);
   RNA_def_property_boolean_sdna(prop, NULL, "flag", CU_FOLLOW);
-  RNA_def_property_ui_text(prop, "Follow", "Make curve path children to rotate along the path");
+  RNA_def_property_ui_text(prop, "Follow", "Make curve path children rotate along the path");
   RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
   prop = RNA_def_property(srna, "use_path_clamp", PROP_BOOLEAN, PROP_NONE);
@@ -1034,7 +1034,7 @@ static void rna_def_path(BlenderRNA *UNUSED(brna), StructRNA *srna)
   RNA_def_property_ui_text(prop,
                            "Stretch",
                            "Option for curve-deform: "
-                           "make deformed child to stretch along entire path");
+                           "make deformed child stretch along entire path");
   RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
   prop = RNA_def_property(srna, "use_deform_bounds", PROP_BOOLEAN, PROP_NONE);
@@ -1050,7 +1050,8 @@ static void rna_def_path(BlenderRNA *UNUSED(brna), StructRNA *srna)
   RNA_def_property_ui_text(prop,
                            "Radius",
                            "Option for paths and curve-deform: "
-                           "apply the curve radius with path following it and deforming");
+                           "apply the curve radius to objects following it "
+                           "and to deformed objects");
   RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 }
 

source/blender/makesrna/intern/rna_define.c

@@ -574,7 +574,7 @@ static int rna_validate_identifier(const char *identifier, char *error, bool pro
 
   for (a = 0; kwlist[a]; a++) {
     if (STREQ(identifier, kwlist[a])) {
-      strcpy(error, "this keyword is reserved by python");
+      strcpy(error, "this keyword is reserved by Python");
       return 0;
     }
   }
@@ -591,7 +591,7 @@ static int rna_validate_identifier(const char *identifier, char *error, bool pro
 
     for (a = 0; kwlist_prop[a]; a++) {
       if (STREQ(identifier, kwlist_prop[a])) {
-        strcpy(error, "this keyword is reserved by python");
+        strcpy(error, "this keyword is reserved by Python");
         return 0;
       }
     }
@@ -784,7 +784,7 @@ void RNA_struct_free(BlenderRNA *brna, StructRNA *srna)
 #  if 0
   if (srna->flag & STRUCT_RUNTIME) {
     if (RNA_struct_py_type_get(srna)) {
-      fprintf(stderr, "%s '%s' freed while holding a python reference.", srna->identifier);
+      fprintf(stderr, "%s '%s' freed while holding a Python reference.", srna->identifier);
     }
   }
 #  endif

source/blender/makesrna/intern/rna_fcurve.c

@@ -2148,7 +2148,7 @@ static void rna_def_channeldriver(BlenderRNA *brna)
   RNA_def_property_ui_text(
       prop,
       "Simple Expression",
-      "The scripted expression can be evaluated without using the full python interpreter");
+      "The scripted expression can be evaluated without using the full Python interpreter");
 
   /* Functions */
   RNA_api_drivers(srna);

source/blender/makesrna/intern/rna_gpencil_legacy_modifier.c

@@ -2957,7 +2957,7 @@ static void rna_def_modifier_gpencilhook(BlenderRNA *brna)
 
   prop = RNA_def_property(srna, "falloff_curve", PROP_POINTER, PROP_NONE);
   RNA_def_property_pointer_sdna(prop, NULL, "curfalloff");
-  RNA_def_property_ui_text(prop, "Falloff Curve", "Custom light falloff curve");
+  RNA_def_property_ui_text(prop, "Falloff Curve", "Custom falloff curve");
   RNA_def_property_update(prop, 0, "rna_GpencilModifier_update");
 
   prop = RNA_def_property(srna, "center", PROP_FLOAT, PROP_NONE);
@@ -3870,7 +3870,8 @@ static void rna_def_modifier_gpencillineart(BlenderRNA *brna)
   RNA_def_property_update(prop, 0, "rna_GpencilModifier_update");
 
   prop = RNA_def_property(srna, "target_layer", PROP_STRING, PROP_NONE);
-  RNA_def_property_ui_text(prop, "Layer", "Grease Pencil layer assigned to the generated strokes");
+  RNA_def_property_ui_text(
+      prop, "Layer", "Grease Pencil layer to which assign the generated strokes");
   RNA_def_property_update(prop, 0, "rna_GpencilModifier_update");
 
   prop = RNA_def_property(srna, "source_vertex_group", PROP_STRING, PROP_NONE);

source/blender/makesrna/intern/rna_nodetree.c

@@ -9958,7 +9958,7 @@ static void rna_def_simulation_state_item(BlenderRNA *brna)
   RNA_def_property_ui_text(
       prop,
       "Attribute Domain",
-      "Attribute domain where the attribute domain is stored in the simulation state");
+      "Attribute domain where the attribute is stored in the simulation state");
   RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
   RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_SimulationStateItem_update");
 

source/blender/makesrna/intern/rna_render.c

@@ -376,7 +376,7 @@ static StructRNA *rna_RenderEngine_register(Main *bmain,
   }
 
   /* create a new engine type */
-  et = MEM_mallocN(sizeof(RenderEngineType), "python render engine");
+  et = MEM_mallocN(sizeof(RenderEngineType), "Python render engine");
   memcpy(et, &dummy_et, sizeof(dummy_et));
 
   et->rna_ext.srna = RNA_def_struct_ptr(&BLENDER_RNA, et->idname, &RNA_RenderEngine);

source/blender/makesrna/intern/rna_rna.c

@@ -3159,7 +3159,7 @@ static void rna_def_function(BlenderRNA *brna)
   RNA_def_property_ui_text(
       prop,
       "No Self",
-      "Function does not pass itself as an argument (becomes a static method in python)");
+      "Function does not pass itself as an argument (becomes a static method in Python)");
 
   prop = RNA_def_property(srna, "use_self_type", PROP_BOOLEAN, PROP_NONE);
   RNA_def_property_clear_flag(prop, PROP_EDITABLE);
@@ -3167,7 +3167,7 @@ static void rna_def_function(BlenderRNA *brna)
   RNA_def_property_ui_text(prop,
                            "Use Self Type",
                            "Function passes itself type as an argument (becomes a class method "
-                           "in python if use_self is false)");
+                           "in Python if use_self is false)");
 }
 
 static void rna_def_number_property(StructRNA *srna, PropertyType type)

source/blender/makesrna/intern/rna_scene.c

@@ -7956,7 +7956,7 @@ void RNA_def_scene(BlenderRNA *brna)
   RNA_def_property_ui_text(
       prop,
       "Current Frame",
-      "Current frame, to update animation data from python frame_set() instead");
+      "Current frame, to update animation data from Python frame_set() instead");
   RNA_def_property_update(prop, NC_SCENE | ND_FRAME, "rna_Scene_frame_update");
 
   prop = RNA_def_property(srna, "frame_subframe", PROP_FLOAT, PROP_TIME);

source/blender/makesrna/intern/rna_space.c

@@ -6112,7 +6112,7 @@ static void rna_def_space_text(BlenderRNA *brna)
 
   prop = RNA_def_property(srna, "use_live_edit", PROP_BOOLEAN, PROP_NONE);
   RNA_def_property_boolean_sdna(prop, NULL, "live_edit", 1);
-  RNA_def_property_ui_text(prop, "Live Edit", "Run python while editing");
+  RNA_def_property_ui_text(prop, "Live Edit", "Run Python while editing");
   RNA_def_property_update(prop, NC_SPACE | ND_SPACE_TEXT, NULL);
 
   /* find */
@@ -6558,7 +6558,7 @@ static void rna_def_space_console(BlenderRNA *brna)
 
   srna = RNA_def_struct(brna, "SpaceConsole", "Space");
   RNA_def_struct_sdna(srna, "SpaceConsole");
-  RNA_def_struct_ui_text(srna, "Space Console", "Interactive python console");
+  RNA_def_struct_ui_text(srna, "Space Console", "Interactive Python console");
 
   /* display */
   prop = RNA_def_property(srna, "font_size", PROP_INT, PROP_NONE); /* copied from text editor */

source/blender/makesrna/intern/rna_ui.c

@@ -362,7 +362,7 @@ static StructRNA *rna_Panel_register(Main *bmain,
     description_size = strlen(_panel_descr) + 1;
     over_alloc += description_size;
   }
-  pt = MEM_callocN(sizeof(PanelType) + over_alloc, "python buttons panel");
+  pt = MEM_callocN(sizeof(PanelType) + over_alloc, "Python buttons panel");
   memcpy(pt, &dummy_pt, sizeof(dummy_pt));
 
   if (_panel_descr[0]) {
@@ -867,7 +867,7 @@ static StructRNA *rna_Header_register(Main *bmain,
   }
 
   /* create a new header type */
-  ht = MEM_mallocN(sizeof(HeaderType), "python buttons header");
+  ht = MEM_mallocN(sizeof(HeaderType), "Python buttons header");
   memcpy(ht, &dummy_ht, sizeof(dummy_ht));
 
   ht->rna_ext.srna = RNA_def_struct_ptr(&BLENDER_RNA, ht->idname, &RNA_Header);
@@ -1024,7 +1024,7 @@ static StructRNA *rna_Menu_register(Main *bmain,
     over_alloc += description_size;
   }
 
-  mt = MEM_callocN(sizeof(MenuType) + over_alloc, "python buttons menu");
+  mt = MEM_callocN(sizeof(MenuType) + over_alloc, "Python buttons menu");
   memcpy(mt, &dummy_mt, sizeof(dummy_mt));
 
   if (_menu_descr[0]) {

source/blender/makesrna/intern/rna_userdef.c

@@ -6315,14 +6315,14 @@ static void rna_def_userdef_script_directory_collection(BlenderRNA *brna, Proper
 
   func = RNA_def_function(srna, "new", "rna_userdef_script_directory_new");
   RNA_def_function_flag(func, FUNC_NO_SELF);
-  RNA_def_function_ui_description(func, "Add a new python script directory");
+  RNA_def_function_ui_description(func, "Add a new Python script directory");
   /* return type */
   parm = RNA_def_pointer(func, "script_directory", "ScriptDirectory", "", "");
   RNA_def_function_return(func, parm);
 
   func = RNA_def_function(srna, "remove", "rna_userdef_script_directory_remove");
   RNA_def_function_flag(func, FUNC_NO_SELF | FUNC_USE_REPORTS);
-  RNA_def_function_ui_description(func, "Remove a python script directory");
+  RNA_def_function_ui_description(func, "Remove a Python script directory");
   parm = RNA_def_pointer(func, "script_directory", "ScriptDirectory", "", "");
   RNA_def_parameter_flags(parm, PROP_NEVER_NULL, PARM_REQUIRED | PARM_RNAPTR);
   RNA_def_parameter_clear_flags(parm, PROP_THICK_WRAP, 0);
@@ -6631,7 +6631,7 @@ static void rna_def_userdef_experimental(BlenderRNA *brna)
   prop = RNA_def_property(srna, "use_override_templates", PROP_BOOLEAN, PROP_NONE);
   RNA_def_property_boolean_sdna(prop, NULL, "use_override_templates", 1);
   RNA_def_property_ui_text(
-      prop, "Override Templates", "Enable library override template in the python API");
+      prop, "Override Templates", "Enable library override template in the Python API");
 
   prop = RNA_def_property(srna, "enable_eevee_next", PROP_BOOLEAN, PROP_NONE);
   RNA_def_property_boolean_sdna(prop, NULL, "enable_eevee_next", 1);

source/blender/makesrna/rna_cleanup/rna_cleaner.py

@@ -324,6 +324,6 @@ def main():
 if __name__ == '__main__':
     import sys
     if sys.version_info.major < 3:
-        print("Incorrect python version, use Python 3 or newer!")
+        print("Incorrect Python version, use Python 3 or newer!")
     else:
         main()

source/blender/python/bmesh/bmesh_py_types_customdata.c

@@ -558,7 +558,7 @@ PyDoc_STRVAR(bpy_bmlayercollection_keys_doc,
              ".. method:: keys()\n"
              "\n"
              "   Return the identifiers of collection members\n"
-             "   (matching pythons dict.keys() functionality).\n"
+             "   (matching Python's dict.keys() functionality).\n"
              "\n"
              "   :return: the identifiers for each member of this collection.\n"
              "   :rtype: list of strings\n");
@@ -593,7 +593,7 @@ PyDoc_STRVAR(bpy_bmlayercollection_items_doc,
              ".. method:: items()\n"
              "\n"
              "   Return the identifiers of collection members\n"
-             "   (matching pythons dict.items() functionality).\n"
+             "   (matching Python's dict.items() functionality).\n"
              "\n"
              "   :return: (key, value) pairs for each member of this collection.\n"
              "   :rtype: list of tuples\n");
@@ -628,7 +628,7 @@ PyDoc_STRVAR(bpy_bmlayercollection_values_doc,
              ".. method:: values()\n"
              "\n"
              "   Return the values of collection\n"
-             "   (matching pythons dict.values() functionality).\n"
+             "   (matching Python's dict.values() functionality).\n"
              "\n"
              "   :return: the members of this collection.\n"
              "   :rtype: list\n");
@@ -660,7 +660,7 @@ PyDoc_STRVAR(bpy_bmlayercollection_get_doc,
              ".. method:: get(key, default=None)\n"
              "\n"
              "   Returns the value of the layer matching the key or default\n"
-             "   when not found (matches pythons dictionary function of the same name).\n"
+             "   when not found (matches Python's dictionary function of the same name).\n"
              "\n"
              "   :arg key: The key associated with the layer.\n"
              "   :type key: string\n"
@@ -929,7 +929,7 @@ PyDoc_STRVAR(bpy_bmlayeraccess_type_doc, "Exposes custom-data layer attributes."
 
 PyDoc_STRVAR(bpy_bmlayercollection_type_doc,
              "Gives access to a collection of custom-data layers of the same type and behaves "
-             "like python dictionaries, "
+             "like Python dictionaries, "
              "except for the ability to do list like index access.");
 
 PyDoc_STRVAR(bpy_bmlayeritem_type_doc,

source/blender/python/bmesh/bmesh_py_types_meshdata.c

@@ -600,7 +600,7 @@ PyDoc_STRVAR(bpy_bmdeformvert_keys_doc,
              ".. method:: keys()\n"
              "\n"
              "   Return the group indices used by this vertex\n"
-             "   (matching pythons dict.keys() functionality).\n"
+             "   (matching Python's dict.keys() functionality).\n"
              "\n"
              "   :return: the deform group this vertex uses\n"
              "   :rtype: list of ints\n");
@@ -622,7 +622,7 @@ PyDoc_STRVAR(bpy_bmdeformvert_values_doc,
              ".. method:: values()\n"
              "\n"
              "   Return the weights of the deform vertex\n"
-             "   (matching pythons dict.values() functionality).\n"
+             "   (matching Python's dict.values() functionality).\n"
              "\n"
              "   :return: The weights that influence this vertex\n"
              "   :rtype: list of floats\n");
@@ -644,7 +644,7 @@ PyDoc_STRVAR(bpy_bmdeformvert_items_doc,
              ".. method:: items()\n"
              "\n"
              "   Return (group, weight) pairs for this vertex\n"
-             "   (matching pythons dict.items() functionality).\n"
+             "   (matching Python's dict.items() functionality).\n"
              "\n"
              "   :return: (key, value) pairs for each deform weight of this vertex.\n"
              "   :rtype: list of tuples\n");
@@ -669,7 +669,7 @@ PyDoc_STRVAR(bpy_bmdeformvert_get_doc,
              ".. method:: get(key, default=None)\n"
              "\n"
              "   Returns the deform weight matching the key or default\n"
-             "   when not found (matches pythons dictionary function of the same name).\n"
+             "   when not found (matches Python's dictionary function of the same name).\n"
              "\n"
              "   :arg key: The key associated with deform weight.\n"
              "   :type key: int\n"

source/blender/python/generic/idprop_py_api.c

@@ -1553,7 +1553,7 @@ static PyObject *BPy_IDGroup_update(BPy_IDProperty *self, PyObject *value)
 PyDoc_STRVAR(BPy_IDGroup_to_dict_doc,
              ".. method:: to_dict()\n"
              "\n"
-             "   Return a purely python version of the group.\n");
+             "   Return a purely Python version of the group.\n");
 static PyObject *BPy_IDGroup_to_dict(BPy_IDProperty *self)
 {
   return BPy_IDGroup_MapDataToPy(self->prop);

source/blender/python/generic/py_capi_utils.c

@@ -607,7 +607,7 @@ void PyC_LineSpit(void)
 
   /* NOTE: allow calling from outside python (RNA). */
   if (!PyC_IsInterpreterActive()) {
-    fprintf(stderr, "python line lookup failed, interpreter inactive\n");
+    fprintf(stderr, "Python line lookup failed, interpreter inactive\n");
     return;
   }
 
@@ -621,7 +621,7 @@ void PyC_StackSpit(void)
 {
   /* NOTE: allow calling from outside python (RNA). */
   if (!PyC_IsInterpreterActive()) {
-    fprintf(stderr, "python line lookup failed, interpreter inactive\n");
+    fprintf(stderr, "Python line lookup failed, interpreter inactive\n");
     return;
   }
 

source/blender/python/intern/bpy_interface.c

@@ -410,7 +410,7 @@ void BPY_python_start(bContext *C, int argc, const char **argv)
       else {
         /* Set to `sys.executable = None` below (we can't do before Python is initialized). */
         fprintf(stderr,
-                "Unable to find the python binary, "
+                "Unable to find the Python binary, "
                 "the multiprocessing module may not be functional!\n");
       }
     }
@@ -427,7 +427,7 @@ void BPY_python_start(bContext *C, int argc, const char **argv)
         if (strchr(py_path_bundle, ':')) {
           fprintf(stderr,
                   "Warning! Blender application is located in a path containing ':' or '/' chars\n"
-                  "This may make python import function fail\n");
+                  "This may make Python import function fail\n");
         }
 #  endif /* __APPLE__ */
 

source/blender/python/intern/bpy_utils_units.c

@@ -156,7 +156,7 @@ PyDoc_STRVAR(
     "   :type str_ref_unit: string or None\n"
     "   :return: The converted/interpreted value.\n"
     "   :rtype: float\n"
-    "   :raises ValueError: if conversion fails to generate a valid python float value.\n");
+    "   :raises ValueError: if conversion fails to generate a valid Python float value.\n");
 static PyObject *bpyunits_to_value(PyObject *UNUSED(self), PyObject *args, PyObject *kw)
 {
   char *usys_str = NULL, *ucat_str = NULL, *inpt = NULL, *uref = NULL;
@@ -243,7 +243,7 @@ PyDoc_STRVAR(bpyunits_to_string_doc,
              "   :type compatible_unit: bool\n"
              "   :return: The converted string.\n"
              "   :rtype: str\n"
-             "   :raises ValueError: if conversion fails to generate a valid python string.\n");
+             "   :raises ValueError: if conversion fails to generate a valid Python string.\n");
 static PyObject *bpyunits_to_string(PyObject *UNUSED(self), PyObject *args, PyObject *kw)
 {
   char *usys_str = NULL, *ucat_str = NULL;

source/blender/python/mathutils/mathutils_Vector.c

@@ -475,7 +475,7 @@ static PyObject *Vector_resize(VectorObject *self, PyObject *value)
   if (self->flag & BASE_MATH_FLAG_IS_WRAP) {
     PyErr_SetString(PyExc_TypeError,
                     "Vector.resize(): "
-                    "cannot resize wrapped data - only python vectors");
+                    "cannot resize wrapped data - only Python vectors");
     return NULL;
   }
   if (self->cb_user) {
@@ -559,7 +559,7 @@ static PyObject *Vector_resize_2d(VectorObject *self)
   if (self->flag & BASE_MATH_FLAG_IS_WRAP) {
     PyErr_SetString(PyExc_TypeError,
                     "Vector.resize_2d(): "
-                    "cannot resize wrapped data - only python vectors");
+                    "cannot resize wrapped data - only Python vectors");
     return NULL;
   }
   if (self->cb_user) {
@@ -590,7 +590,7 @@ static PyObject *Vector_resize_3d(VectorObject *self)
   if (self->flag & BASE_MATH_FLAG_IS_WRAP) {
     PyErr_SetString(PyExc_TypeError,
                     "Vector.resize_3d(): "
-                    "cannot resize wrapped data - only python vectors");
+                    "cannot resize wrapped data - only Python vectors");
     return NULL;
   }
   if (self->cb_user) {
@@ -625,7 +625,7 @@ static PyObject *Vector_resize_4d(VectorObject *self)
   if (self->flag & BASE_MATH_FLAG_IS_WRAP) {
     PyErr_SetString(PyExc_TypeError,
                     "Vector.resize_4d(): "
-                    "cannot resize wrapped data - only python vectors");
+                    "cannot resize wrapped data - only Python vectors");
     return NULL;
   }
   if (self->cb_user) {

source/blender/windowmanager/intern/wm_operator_props.c

@@ -145,7 +145,7 @@ void WM_operator_properties_filesel(wmOperatorType *ot,
       ot->srna, "filter_movie", (filter & FILE_TYPE_MOVIE) != 0, "Filter movie files", "");
   RNA_def_property_flag(prop, PROP_HIDDEN | PROP_SKIP_SAVE);
   prop = RNA_def_boolean(
-      ot->srna, "filter_python", (filter & FILE_TYPE_PYSCRIPT) != 0, "Filter python files", "");
+      ot->srna, "filter_python", (filter & FILE_TYPE_PYSCRIPT) != 0, "Filter Python files", "");
   RNA_def_property_flag(prop, PROP_HIDDEN | PROP_SKIP_SAVE);
   prop = RNA_def_boolean(
       ot->srna, "filter_font", (filter & FILE_TYPE_FTFONT) != 0, "Filter font files", "");