Convert a string with numbers into a list of integers using Python

I’ve a dataframe column with an string of numbers and I want to convert it into a list of numbers. The output must be a list, since I need be able to pull the index value (for instance, df.probabilities[0][0] and return 0.001).

This my current dataframe:

 probabilities
 0.001, 0.002, 0.003, 0.004

I need this:

  probabilities
  [0.001, 0.002, 0.003, 0.004]

Thank you in advance.

>Solution :

Uses .str accessor with split:

df['probabilities'].str.split(',\s?')