แพ้นัดวันไหนและแข่งกระชับมิตรด้วยสกอร์ 1-2?
What date has lost as the result and a competition of friendly with 1-2 as the score?
df = pd.DataFrame(columns=['date', 'score', 'result', 'competition'])
df[(df['result']=='lost') & (df['competition']=='friendly') & (df['score']=='1-2')]['date']