从日期时间将熊猫数据框转换为年份

Question

df['Feedback Year']= df['Feedback Date'].strftime("%B")

错误：

AttributeError: 'Series' object has no attribute 'strftime'

Answer 1

尝试：

df['Feedback Year']= df['Feedback Date'].dt.strftime("%B")

或

df['Feedback Year']= df['Feedback Date'].apply(lambda x: x.strftime('%B'))