DEBUG!

libs/P_C.py

@@ -23,10 +23,9 @@ def P_C_M(A, B):  # stand for Physics Calculation multiple
         Int -= 1
     else:
         pass
-    Unit1 = [].append(A[2].extend(B[2]))
-    Unit2 = []
+    Unit1, Unit2 = A[2] + B[2], []
     for unit in B[3]:
-        if unit in [Unit1]:
+        if unit in Unit1:
             Unit1.remove(unit)
         else:
             Unit2.append(unit)
@@ -47,6 +46,7 @@ def P_C_D(A, B):  # stand for Physics Calculation divide
     formats:
     A & B list format:docs.basic_config.json:basic_number
     """
+    B[2], B[3] = B[3], B[2]
     C = [0.0, 1, [], []]
     Float = float(A[0] / B[0])
     Int = int(A[1] - B[1])
@@ -58,10 +58,9 @@ def P_C_D(A, B):  # stand for Physics Calculation divide
         Int -= 1
     else:
         pass
-    Unit1 = A[2].extend(B[3])
-    Unit2 = []
-    for unit in B[2]:
-        if unit in [Unit1]:
+    Unit1, Unit2 = A[2] + B[2], []
+    for unit in B[3]:
+        if unit in Unit1:
             Unit1.remove(unit)
         else:
             Unit2.append(unit)

test.py

@@ -15,6 +15,7 @@ print("B = " , B)
 C = libs.P_C.P_C_M(A, B)
 D = libs.P_C.P_C_D(A, B)
 E = libs.P_C.P_C_D(C, B)
+
 print("A × B = " , C)
 print("A ÷ B = " , D)
 print("A × B ÷ B = " , E)