diff --git a/lib/ras/variables.py b/lib/ras/variables.py
index 4525ef3..e0369e7 100644
--- a/lib/ras/variables.py
+++ b/lib/ras/variables.py
@@ -1,4 +1,3 @@
-
 r"""
 Signature description in error log corresponding to error injection.
 """
@@ -48,41 +47,39 @@
 #     - field2: chip address.
 #     - field3: Error log signature description.
 
-ERROR_INJECT_DICT = {'MCACALIFIR_RECV1': ['07010900', '8000000000000000',
-                                          DES_MCA_RECV1],
-                     'MCACALIFIR_RECV32': ['07010900', '2000000000000000',
-                                           DES_MCA_RECV32],
-                     'MCACALIFIR_UE': ['07010900', '0020000000000000', DES_MCA_UE],
-                     'MCI_RECV1': ['05010800', '8000000000000000', DES_MCI_RECV1],
-                     'MCI_UE': ['05010800', '4000000000000000', DES_MCI_UE],
-                     'NX_RECV1': ['02011100', '0004000000000000', DES_NX_RECV1],
-                     'NX_UE': ['02011100', '0400000000000000', DES_NX_UE],
-                     'NX_RECV32': ['02011100', '0800000000000000', DES_NX_RECV32],
-                     'CXA_RECV5': ['02010800', '0000000020000000', DES_CXA_RECV5],
-                     'CXA_RECV32': ['02010800', '2000000000000000', DES_CXA_RECV32],
-                     'CXA_UE': ['02010800', '4000000000000000', DES_CXA_UE],
-                     'OBUS_RECV32': ['0904000a', '8000000000000000', DES_OBUS_RECV32],
-                     'NPU0_RECV32': ['05013C00', '0004000000000000', DES_NPU0_RECV32],
-                     'L2FIR_RECV1': ['10010800', '0080000000000000', DES_L2_RECV1],
-                     'L2FIR_RECV32': ['10010800', '0200000000000000', DES_L2_RECV32],
-                     'L2FIR_UE': ['10010800', '0040000000000000', DES_L2_UE],
-                     'L3FIR_RECV1': ['10011800', '0000400000000000', DES_L3_RECV1],
-                     'L3FIR_RECV32': ['10011800', '0100000000000000', DES_L3_RECV32],
-                     'L3FIR_UE': ['10011800', '0000800000000000', DES_L3_UE],
-                     'OCCFIR_RECV1': ['01010800', '0000000000040000', DES_OCC_RECV1],
-                     'CMEFIR_RECV1': ['10012000', '0100000000000000', DES_CME_RECV1],
-                     'EQFIR_RECV32': ['1004000A', '8000000000000000', DES_EQ_RECV32],
-                     'NCUFIR_RECV1': ['10011400', '0080000000000000', DES_NCU_RECV1],
-                     'NCUFIR_UE': ['10011400', '8000000000000000', DES_NCU_UE],
-                     'COREFIR_RECV5': ['20010A40', '8000000000000000', DES_CORE_RECV5],
-                     'COREFIR_RECV1': ['20010A40', '0000000200000000', DES_CORE_RECV1],
-                     'COREFIR_UE': ['20010A40', '4000000000000000', DES_CORE_UE],
-
-                     }
+ERROR_INJECT_DICT = {
+    "MCACALIFIR_RECV1": ["07010900", "8000000000000000", DES_MCA_RECV1],
+    "MCACALIFIR_RECV32": ["07010900", "2000000000000000", DES_MCA_RECV32],
+    "MCACALIFIR_UE": ["07010900", "0020000000000000", DES_MCA_UE],
+    "MCI_RECV1": ["05010800", "8000000000000000", DES_MCI_RECV1],
+    "MCI_UE": ["05010800", "4000000000000000", DES_MCI_UE],
+    "NX_RECV1": ["02011100", "0004000000000000", DES_NX_RECV1],
+    "NX_UE": ["02011100", "0400000000000000", DES_NX_UE],
+    "NX_RECV32": ["02011100", "0800000000000000", DES_NX_RECV32],
+    "CXA_RECV5": ["02010800", "0000000020000000", DES_CXA_RECV5],
+    "CXA_RECV32": ["02010800", "2000000000000000", DES_CXA_RECV32],
+    "CXA_UE": ["02010800", "4000000000000000", DES_CXA_UE],
+    "OBUS_RECV32": ["0904000a", "8000000000000000", DES_OBUS_RECV32],
+    "NPU0_RECV32": ["05013C00", "0004000000000000", DES_NPU0_RECV32],
+    "L2FIR_RECV1": ["10010800", "0080000000000000", DES_L2_RECV1],
+    "L2FIR_RECV32": ["10010800", "0200000000000000", DES_L2_RECV32],
+    "L2FIR_UE": ["10010800", "0040000000000000", DES_L2_UE],
+    "L3FIR_RECV1": ["10011800", "0000400000000000", DES_L3_RECV1],
+    "L3FIR_RECV32": ["10011800", "0100000000000000", DES_L3_RECV32],
+    "L3FIR_UE": ["10011800", "0000800000000000", DES_L3_UE],
+    "OCCFIR_RECV1": ["01010800", "0000000000040000", DES_OCC_RECV1],
+    "CMEFIR_RECV1": ["10012000", "0100000000000000", DES_CME_RECV1],
+    "EQFIR_RECV32": ["1004000A", "8000000000000000", DES_EQ_RECV32],
+    "NCUFIR_RECV1": ["10011400", "0080000000000000", DES_NCU_RECV1],
+    "NCUFIR_UE": ["10011400", "8000000000000000", DES_NCU_UE],
+    "COREFIR_RECV5": ["20010A40", "8000000000000000", DES_CORE_RECV5],
+    "COREFIR_RECV1": ["20010A40", "0000000200000000", DES_CORE_RECV1],
+    "COREFIR_UE": ["20010A40", "4000000000000000", DES_CORE_UE],
+}
 
 # Address translation files
-probe_cpu_file_path = '/root/probe_cpus.sh'
-addr_translation_file_path = '/root/scom_addr_p9.sh'
+probe_cpu_file_path = "/root/probe_cpus.sh"
+addr_translation_file_path = "/root/scom_addr_p9.sh"
 
 cfam_address = "2801"
 mem_address = "8208000"