if statements in iteration over column in pandas dataframe

I want to iterate through the columnn df['Social Distancing Advisory'] and replace various elements by another, but nothing seems to work when I set it up like this.

df looks like this State Social Distancing Advisory Date (effective) status new order until details

---

import pandas as pd 

df = pd.read_excel('/Users/Arthur/Desktop/COVID-RA/state_data.xlsx')

for column in df['Social Distancing Advisory']:

  if df['Social Distancing Advisory'] == 'sah':
    df['Social Distancing Advisory'].replace('sah','1')

  if df['Social Distancing Advisory'] == 'sip':    
    df['Social Distancing Advisory'].replace('sip','0')
df