[PATCH v1 1/2] BaseTools: fix None comparisons

[Jaben <jaben.carsey@intel.com>]

when comparing a list/string against None and empty, just compare the object.
when comparing against None, dont use !=, ==, <>

Cc: Liming Gao <liming.gao@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jaben Carsey <jaben.carsey@intel.com>
---
 BaseTools/Source/Python/AutoGen/AutoGen.py                             | 2 +-
 BaseTools/Source/Python/AutoGen/GenC.py                                | 2 +-
 BaseTools/Source/Python/GenFds/Fv.py                                   | 5 ++---
 BaseTools/Source/Python/Rsa2048Sha256Sign/Rsa2048Sha256GenerateKeys.py | 6 +++---
 BaseTools/Source/Python/Workspace/DscBuildData.py                      | 4 ++--
 5 files changed, 9 insertions(+), 10 deletions(-)

diff --git a/BaseTools/Source/Python/AutoGen/AutoGen.py b/BaseTools/Source/Python/AutoGen/AutoGen.py
index dbc9f893c2f1..2613c77a7a10 100644
--- a/BaseTools/Source/Python/AutoGen/AutoGen.py
+++ b/BaseTools/Source/Python/AutoGen/AutoGen.py
@@ -1675,7 +1675,7 @@ class PlatformAutoGen(AutoGen):
                                             DscPcdEntry.TokenValue = DecPcdEntry.TokenValue
                                             DscPcdEntry.TokenSpaceGuidValue = eachDec.Guids[DecPcdEntry.TokenSpaceGuidCName]
                                             # Only fix the value while no value provided in DSC file.
-                                            if (Sku.DefaultValue == "" or Sku.DefaultValue==None):
+                                            if not Sku.DefaultValue:
                                                 DscPcdEntry.SkuInfoList[DscPcdEntry.SkuInfoList.keys()[0]].DefaultValue = DecPcdEntry.DefaultValue
                                                                                                                     
                                 if DscPcdEntry not in self._DynamicPcdList:
diff --git a/BaseTools/Source/Python/AutoGen/GenC.py b/BaseTools/Source/Python/AutoGen/GenC.py
index 58da9e6b1784..a15eb707421e 100644
--- a/BaseTools/Source/Python/AutoGen/GenC.py
+++ b/BaseTools/Source/Python/AutoGen/GenC.py
@@ -1534,7 +1534,7 @@ def CreateModuleEntryPointCode(Info, AutoGenC, AutoGenH):
     }
 
     if Info.ModuleType in ['PEI_CORE', 'DXE_CORE', 'SMM_CORE', 'MM_CORE_STANDALONE']:
-        if Info.SourceFileList <> None and Info.SourceFileList <> []:
+        if Info.SourceFileList:
           if NumEntryPoints != 1:
               EdkLogger.error(
                   "build",
diff --git a/BaseTools/Source/Python/GenFds/Fv.py b/BaseTools/Source/Python/GenFds/Fv.py
index 345ad3bdcc90..aae644bef905 100644
--- a/BaseTools/Source/Python/GenFds/Fv.py
+++ b/BaseTools/Source/Python/GenFds/Fv.py
@@ -337,11 +337,10 @@ class FV (FvClassObject):
         #
         # Generate FV extension header file
         #
-        if self.FvNameGuid is None or self.FvNameGuid == '':
+        if not self.FvNameGuid:
             if len(self.FvExtEntryType) > 0 or self.UsedSizeEnable:
                 GenFdsGlobalVariable.ErrorLogger("FV Extension Header Entries declared for %s with no FvNameGuid declaration." % (self.UiFvName))
-        
-        if self.FvNameGuid <> None and self.FvNameGuid <> '':
+        else:
             TotalSize = 16 + 4
             Buffer = ''
             if self.UsedSizeEnable:
diff --git a/BaseTools/Source/Python/Rsa2048Sha256Sign/Rsa2048Sha256GenerateKeys.py b/BaseTools/Source/Python/Rsa2048Sha256Sign/Rsa2048Sha256GenerateKeys.py
index 95a636966c59..9711de8f5c2e 100644
--- a/BaseTools/Source/Python/Rsa2048Sha256Sign/Rsa2048Sha256GenerateKeys.py
+++ b/BaseTools/Source/Python/Rsa2048Sha256Sign/Rsa2048Sha256GenerateKeys.py
@@ -9,7 +9,7 @@
 # on STDOUT.
 # This tool has been tested with OpenSSL 1.0.1e 11 Feb 2013
 #
-# Copyright (c) 2013 - 2017, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2013 - 2018, Intel Corporation. All rights reserved.<BR>
 # This program and the accompanying materials
 # are licensed and made available under the terms and conditions of the BSD License
 # which accompanies this distribution.  The full text of the license may be found at
@@ -89,7 +89,7 @@ if __name__ == '__main__':
   #
   # Check for output file argument
   #
-  if args.OutputFile <> None:
+  if args.OutputFile is not None:
     for Item in args.OutputFile:
       #
       # Save PEM filename and close output file
@@ -109,7 +109,7 @@ if __name__ == '__main__':
   #
   # Check for input file argument
   #
-  if args.InputFile <> None:
+  if args.InputFile is not None:
     for Item in args.InputFile:
       #
       # Save PEM filename and close input file
diff --git a/BaseTools/Source/Python/Workspace/DscBuildData.py b/BaseTools/Source/Python/Workspace/DscBuildData.py
index 6766f059b0f7..9c77d6c50c27 100644
--- a/BaseTools/Source/Python/Workspace/DscBuildData.py
+++ b/BaseTools/Source/Python/Workspace/DscBuildData.py
@@ -2292,7 +2292,7 @@ class DscBuildData(PlatformBuildClassObject):
             pcdDecObject = self._DecPcds[pcd.TokenCName, pcd.TokenSpaceGuidCName]
             # Only fix the value while no value provided in DSC file.
             for sku in pcd.SkuInfoList.values():
-                if (sku.DefaultValue == "" or sku.DefaultValue==None):
+                if not sku.DefaultValue:
                     sku.DefaultValue = pcdDecObject.DefaultValue
             if 'DEFAULT' not in pcd.SkuInfoList.keys() and 'COMMON' not in pcd.SkuInfoList.keys():
                 valuefromDec = pcdDecObject.DefaultValue
@@ -2624,7 +2624,7 @@ class DscBuildData(PlatformBuildClassObject):
             pcd.DatumType = pcdDecObject.DatumType
             # Only fix the value while no value provided in DSC file.
             for sku in pcd.SkuInfoList.values():
-                if (sku.DefaultValue == "" or sku.DefaultValue==None):
+                if not sku.DefaultValue:
                     sku.DefaultValue = pcdDecObject.DefaultValue
             if 'DEFAULT' not in pcd.SkuInfoList.keys() and 'COMMON' not in pcd.SkuInfoList.keys():
                 valuefromDec = pcdDecObject.DefaultValue
-- 
2.16.2.windows.1