If Statement that has two outcomes [duplicate]

I'm trying to define a new column ['Actual Loss'] that is dependent on the value of another column ['Loss'] If the value of ['Loss'] is less than zero then multiply it by -1 If the value of ['Loss'] is greater than zero then multiply it by 0

df1 = Investor, Loss

  Tom, -100
  Barry, 100

expected:

df1 = Investor, Loss, Actual Loss

  Tom, -100, 100
  Barry 100, 0

Code = if len (df) < 0 : df['Actual Loss'] = df.apply(lambda x: x['Loss']*-1 if x['Loss'] <0 else x['Loss')*0)