import arcpy

# Local variables:
Links_Final = "Links_Final"
condition = ""RR1"= 777 OR "RR2"=777 OR "RR3"=777 OR "RR4"=777"

# Process: Select Layer By Attribute
arcpy.SelectLayerByAttribute_management(Links_Final, "NEW_SELECTION", condition)

value = int(arcpy.GetParameterAsText(0))
condition = ""RR1"= value OR "RR2"= value OR "RR3"= value OR "RR4"= value"

import arcpy

# Local variables:
Links_Final = "Links_Final"
value = int(arcpy.GetParameterAsText(0))

condition = """ "RR1" = {0} OR "RR2" = {0} OR "RR3" = {0} OR "RR4" = {0} """.format(value)

# Process: Select Layer By Attribute
arcpy.SelectLayerByAttribute_management(Links_Final, "NEW_SELECTION", condition)