[CORE] Don't crash when reading from /sys/ file system is not allowed

CHANGELOG.md

@@ -9,6 +9,7 @@ and this project (partially) adheres to [Semantic Versioning](https://semver.org
 ### Changed
 - Fix `df` output parsing when file-systems column contain white-spaces in `Disk`
 - Prevent program crash when calling external programs raise `PermissionError` exception
+- Prevent program crash when reading from `/sys/` file system is not allowed
 
 ## [v4.13.1] - 2021-09-04
 ### Changed

archey/entries/model.py

@@ -84,7 +84,7 @@ class Model(Entry):
                 '/sys/devices/virtual/dmi/id/product_name', encoding='UTF-8'
             ) as f_product_name:
                 product_name = f_product_name.read().rstrip()
-        except FileNotFoundError:
+        except OSError:
             return None
 
         # Stop `/sys/devices/virtual/dmi/id/*` parsing on fuzzy data.
@@ -96,7 +96,7 @@ class Model(Entry):
                 '/sys/devices/virtual/dmi/id/product_version', encoding='UTF-8'
             ) as f_product_version:
                 product_version = f_product_version.read().rstrip()
-        except FileNotFoundError:
+        except OSError:
             product_version = ''
 
         if not product_version:

archey/entries/temperature.py

@@ -131,14 +131,14 @@ class Temperature(Entry):
     def _poll_thermal_zones(self):
         # We just check for values within files present in the path below.
         for thermal_file in iglob(r'/sys/class/thermal/thermal_zone*/temp'):
-            with open(thermal_file, encoding='ASCII') as file:
-                try:
+            try:
+                with open(thermal_file, encoding='ASCII') as file:
                     temp = float(file.read())
-                except OSError:
-                    continue
+            except OSError:
+                continue
 
-                if temp != 0.0:
-                    self._temps.append(temp / 1000)
+            if temp != 0.0:
+                self._temps.append(temp / 1000)
 
     def _run_istats_or_osxcputemp(self):
         """