1 files changed, 32 insertions, 37 deletions

diff --git a/modules/mono/build_scripts/mono_reg_utils.py b/modules/mono/build_scripts/mono_reg_utils.py
index b2c48f0a61..0ec7e2f433 100644
--- a/modules/mono/build_scripts/mono_reg_utils.py
+++ b/modules/mono/build_scripts/mono_reg_utils.py
@@ -1,21 +1,16 @@
 import os
 import platform
 
-from compat import decode_utf8
-
-if os.name == 'nt':
+if os.name == "nt":
     import sys
-    if sys.version_info < (3,):
-        import _winreg as winreg
-    else:
-        import winreg
+    import winreg
 
 
 def _reg_open_key(key, subkey):
     try:
         return winreg.OpenKey(key, subkey)
-    except (WindowsError, OSError):
-        if platform.architecture()[0] == '32bit':
+    except OSError:
+        if platform.architecture()[0] == "32bit":
             bitness_sam = winreg.KEY_WOW64_64KEY
         else:
             bitness_sam = winreg.KEY_WOW64_32KEY
@@ -25,12 +20,12 @@ def _reg_open_key(key, subkey):
 def _reg_open_key_bits(key, subkey, bits):
     sam = winreg.KEY_READ
 
-    if platform.architecture()[0] == '32bit':
-        if bits == '64':
+    if platform.architecture()[0] == "32bit":
+        if bits == "64":
             # Force 32bit process to search in 64bit registry
             sam |= winreg.KEY_WOW64_64KEY
     else:
-        if bits == '32':
+        if bits == "32":
             # Force 64bit process to search in 32bit registry
             sam |= winreg.KEY_WOW64_32KEY
 
@@ -40,79 +35,79 @@ def _reg_open_key_bits(key, subkey, bits):
 def _find_mono_in_reg(subkey, bits):
     try:
         with _reg_open_key_bits(winreg.HKEY_LOCAL_MACHINE, subkey, bits) as hKey:
-            value = winreg.QueryValueEx(hKey, 'SdkInstallRoot')[0]
+            value = winreg.QueryValueEx(hKey, "SdkInstallRoot")[0]
             return value
-    except (WindowsError, OSError):
+    except OSError:
         return None
 
 
 def _find_mono_in_reg_old(subkey, bits):
     try:
         with _reg_open_key_bits(winreg.HKEY_LOCAL_MACHINE, subkey, bits) as hKey:
-            default_clr = winreg.QueryValueEx(hKey, 'DefaultCLR')[0]
+            default_clr = winreg.QueryValueEx(hKey, "DefaultCLR")[0]
             if default_clr:
-                return _find_mono_in_reg(subkey + '\\' + default_clr, bits)
+                return _find_mono_in_reg(subkey + "\\" + default_clr, bits)
             return None
-    except (WindowsError, EnvironmentError):
+    except OSError:
         return None
 
 
 def find_mono_root_dir(bits):
-    root_dir = _find_mono_in_reg(r'SOFTWARE\Mono', bits)
+    root_dir = _find_mono_in_reg(r"SOFTWARE\Mono", bits)
     if root_dir is not None:
         return str(root_dir)
-    root_dir = _find_mono_in_reg_old(r'SOFTWARE\Novell\Mono', bits)
+    root_dir = _find_mono_in_reg_old(r"SOFTWARE\Novell\Mono", bits)
     if root_dir is not None:
         return str(root_dir)
-    return ''
+    return ""
 
 
 def find_msbuild_tools_path_reg():
     import subprocess
 
-    vswhere = os.getenv('PROGRAMFILES(X86)')
+    vswhere = os.getenv("PROGRAMFILES(X86)")
     if not vswhere:
-        vswhere = os.getenv('PROGRAMFILES')
-    vswhere += r'\Microsoft Visual Studio\Installer\vswhere.exe'
+        vswhere = os.getenv("PROGRAMFILES")
+    vswhere += r"\Microsoft Visual Studio\Installer\vswhere.exe"
 
-    vswhere_args = ['-latest', '-products', '*', '-requires', 'Microsoft.Component.MSBuild']
+    vswhere_args = ["-latest", "-products", "*", "-requires", "Microsoft.Component.MSBuild"]
 
     try:
         lines = subprocess.check_output([vswhere] + vswhere_args).splitlines()
 
         for line in lines:
-            parts = decode_utf8(line).split(':', 1)
+            parts = line.decode("utf-8").split(":", 1)
 
-            if len(parts) < 2 or parts[0] != 'installationPath':
+            if len(parts) < 2 or parts[0] != "installationPath":
                 continue
 
             val = parts[1].strip()
 
             if not val:
-                raise ValueError('Value of `installationPath` entry is empty')
+                raise ValueError("Value of `installationPath` entry is empty")
 
             # Since VS2019, the directory is simply named "Current"
-            msbuild_dir = os.path.join(val, 'MSBuild\\Current\\Bin')
+            msbuild_dir = os.path.join(val, "MSBuild\\Current\\Bin")
             if os.path.isdir(msbuild_dir):
                 return msbuild_dir
 
             # Directory name "15.0" is used in VS 2017
-            return os.path.join(val, 'MSBuild\\15.0\\Bin')
+            return os.path.join(val, "MSBuild\\15.0\\Bin")
 
-        raise ValueError('Cannot find `installationPath` entry')
+        raise ValueError("Cannot find `installationPath` entry")
     except ValueError as e:
-        print('Error reading output from vswhere: ' + e.message)
-    except WindowsError:
-        pass # Fine, vswhere not found
+        print("Error reading output from vswhere: " + e.message)
+    except OSError:
+        pass  # Fine, vswhere not found
     except (subprocess.CalledProcessError, OSError):
         pass
 
     # Try to find 14.0 in the Registry
 
     try:
-        subkey = r'SOFTWARE\Microsoft\MSBuild\ToolsVersions\14.0'
+        subkey = r"SOFTWARE\Microsoft\MSBuild\ToolsVersions\14.0"
         with _reg_open_key(winreg.HKEY_LOCAL_MACHINE, subkey) as hKey:
-            value = winreg.QueryValueEx(hKey, 'MSBuildToolsPath')[0]
+            value = winreg.QueryValueEx(hKey, "MSBuildToolsPath")[0]
             return value
-    except (WindowsError, OSError):
-        return ''
+    except OSError:
+        return ""