I have a csv file in which the data is in string format. i need to convert the numbers in the row to float.I cannot use any module to read the csv file.The data in the csv file is as follows [['Argentina','23','24.5'......],['America','22.4','23.5'.....].......]

The code i wrote so far is:

```
   with open('life.csv', 'r') as f:
   lines=[line.rstrip() for line in f]# To remove /r/n 
   results = []
   for line in lines:
   words = line.split(',')
   results.append(words)

print (results[1:])```

```