until now I only used excel so I'm new to python, I wanted to know how to do the following operation in python. Thank you very much.

```py
mydata = [['e', 'cat'], 
          ['a', 'dog'], 
          ['i', 'bird'], 
          ['o', 'frog']]

lst = [['a', '1'],
       ['e', '2'],
       ['i', '3'],
       ['o', '4'],
       ['u', '5']]

```

I would like something like that

```py
mydata_1 = [['e', 'cat','2'], 
            ['a', 'dog','1'], 
            ['i', 'bird','3'], 
            ['o', 'frog','4']]

```