您好，我想要用c#讀取txt傳到python上面做運算，但是會出現IronPython.Runtime.Exceptions.ValueErrorException: 'invalid literal for float(): .' 這個error，這是我放在txt裡面的值

這是c#的程式碼

string line;

            System.IO.StreamReader file = new System.IO.StreamReader(@"C:\Users\wkj88\Desktop\teraterm.txt");
            while ((line = file.ReadToEnd()) != null)
            {
                
                ScriptRuntime pyRunTime = Python.CreateRuntime();
                dynamic obj = pyRunTime.UseFile(@"C:\Users\wkj88\hello.py");
                Console.Write(obj.welcome(line));
           

            }
            file.Close();
            Console.ReadKey();

這是python的

def welcome(rms):
    a = rms.replace('\r\n','')    
    float_lst = [float(x) for x in a]
    return sum(float_lst)

麻煩大家了!!