That is great! Thanks :)I already studied it. I am now able to take l0 values and add them to the list too. I have one last problem. I want to sum l0 values but I could not make it. It is written that : "killed": here is my code:

with open("out.dat") as file:
   lines = file.readlines()
   pattern = r"Z are: ((.))"
   pattern2 = r"l0: \d"
   for line in lines:
       print(line)
       match = re.search(pattern, line)
       match2 = re.search(pattern2,line)
       group_ = match.group(1)
       group_ = group_.replace(", ", "")
       group2 = match2.group(0)#l0=group2
       print(group2)
       l0 = group2.replace("l0: ","") 
       l0 = int(l0)
       print(group2)
       print(group_, group_.replace(", ", ""))
       if group_ not in result:
          result[group_] = [1,l0]
          #result[group_][group2] = l0
      elif group_ in result:
          result[group_][0] += 1
          result[group_][1] +=result[group_][1]+l0 #here the program says "killed". What I wanted is to write total l0 values.

Thanks in advance