regex deprecation fixes

Author: pedroCabrera

PyFlow/Core/Common.py

@@ -701,7 +701,7 @@ def extractDigitsFromEndOfString(string):
     :returns: Numbers in the final of the string
     :rtype: int
     """
-    result = re.search("(\d+)$", string)
+    result = re.search(r"(\d+)$", string)
     if result is not None:
         return int(result.group(0))
 

PyFlow/UI/Widgets/BlueprintCanvas.py

@@ -2079,7 +2079,7 @@ def __init__(self, graphManager, pyFlowInstance, parent=None):
         self.leCompoundName.setValidator(nameValidator)
         self.leCompoundName.returnPressed.connect(self.onActiveCompoundNameAccepted)
 
-        rxLetters = QtCore.QRegularExpression('[a-zA-Z]+(\|[a-zA-Z]+)*')
+        rxLetters = QtCore.QRegularExpression(r'[a-zA-Z]+(\|[a-zA-Z]+)*')
         categoryValidator = QtGui.QRegularExpressionValidator(rxLetters, self.leCompoundCategory)
         self.leCompoundCategory.setValidator(categoryValidator)
         self.leCompoundCategory.returnPressed.connect(