I'm a beginner in Python and I want to find out how to calculate the min/max, mean, median values from a csv file. Note, without using the csv module, or any of the sort. I just want to use the 'reading/opening files' method.

So after putting in the code to read the file, this is what I've written (I wanted to read only the second column of the file):

```
with open("data.csv", "r") as x:
            second = []
            for line in x:
                spl = [float(data.split(',')[1]) for data in x]
                second.append(spl[0:6])
            print(second)

            lowest = min(second)
            print(lowest)

```

When I execute this, Python prints out two statements (of the second column, like what I wanted) but prints out, for example `[x, y, z]` instead of actually calculating the min value. 

When I tried omitting the `float` part in the line `spl = [...]` Python just executes the same thing but `['x','y','z']` instead (with quotation marks).