Repeating columns based on corresponding column values and rows based on total values in pandas dataframe

Question

I have the following data frame:

df1_given =pd.DataFrame.from_dict({\'col_0\':[0, 3], \'col_1\':[0.1, 2], \'col_2\':[0.2, 0], \'col_3\':[0.3, 2]})

<