Why i cant use func_timeout in method a class in python

[angushhz]

I have a code using func_timeout to limit time out of process = 0.1
Example

class  Solution
         def process_timeout(self, s: str):
        // run some task take time
        return {
            "province": province,
            "district": district,
            "ward": original_ward, # Duy Fix khac dau
        }
    def process(self, s: str):
       res = self.process_timeout(s)
        return res

In main function:

🙋‍♂️ Happy case:
In this case func_timeout run ok . It will limit timeout in 0.1s

__main___
solution = Solution()
for i in Range(10):
  try:
          res = func_timeout(0.1,solution.process,args=(s,))
  except FunctionTimedOut:
          return {            
                    "province": "EXCEPTION",
                    "district": "EXCEPTION",
                    "ward": "EXCEPTION"
                  }

👎👎 Bad case change liitle logic :👎
I move function func_timeout to inside method process. It dont run or call thread to set timeout. It can't kill thread after 0.1s.

class Solution:
  // same sample code
     ....
    def process(self, s: str):
      try:
        res = func_timeout(0.1,self.process_timeout,args=(s,))
        return res
     except FunctionTimedOut:
          return {            
                    "province": "EXCEPTION",
                    "district": "EXCEPTION",
                    "ward": "EXCEPTION"
                  }


__ main __
solution = Solution()
for i in Range(10):
     res = solution.process()

😑
Please help me answer above situation ? thanks 🙏