将月份名称和年份（例如 Jul-15）转换为日期 - Python

Question

my column values are like this " Jul-15", "Jun-15" and etc... The data type is object.我的列值是这样的“Jul-15”、“Jun-15”等等......数据类型是对象。

I want to change the data type to date and the values to date.我想将数据类型更改为日期并将值更改为日期。 I tried我试过

df["Time Period"] = df["Time Period"].apply(lambda x: datetime.strptime(x, '%m-Y'))

but it is giving me the time data 'Jul-15' does not match format '%m-Y' .但它给了我时间数据'Jul-15' does not match format '%m-Y' 。

Any help is much appreciated.任何帮助深表感谢。

Answer 1

Three letters month names are matched by %b , not %m .三个字母的月份名称由%b匹配，而不是%m 。
Two digits years are matched by %y , not Y两位数年份由%y匹配，而不是Y

While you are at it, ditch .apply and use the vectorized to_datetime to gain speed:当你在做的时候， .apply并使用矢量化的to_datetime来提高速度：

df['Time Period'] = pd.to_datetime(df['Time Period'], format='%b-%y')