Compare <class 'pandas._libs.tslibs.timestamps.Timestamp'>, str and datetime64[ns] dates in Python
Question:
I need to query using dates of various data types, the data and their corresponding data types are listed below:
last_month_year: <class 'str'> ** Used `pd.to_datetime()` and got `<class 'pandas._libs.tslibs.timestamps.Timestamp'>` format
current_month_year: <class 'str'>
df['Year_Month']: object
The query:
df[(df['Year_Month'] == current_month_year) | (df['Year_Month'] == last_month_year)]
The dates consist of "year" and "month" and are of the format "Year_Month", e.g., "2020-01".
I had a few attempts at converting them into the same data type but there are always certain issues. What’s the best data type to convert these three data types into to compare them? Thanks.
Answers:
Convert both 'Year_Month' column and current_month_year to datetime64[ns] type using the pd.to_datetime() method
df['Year_Month'] = pd.to_datetime(df['Year_Month'])
current_month_year = pd.to_datetime(current_month_year)
out = df[(df['Year_Month'] == current_month_year) | (df['Year_Month'] == last_month_year)]
I need to query using dates of various data types, the data and their corresponding data types are listed below:
last_month_year: <class 'str'> ** Used `pd.to_datetime()` and got `<class 'pandas._libs.tslibs.timestamps.Timestamp'>` format
current_month_year: <class 'str'>
df['Year_Month']: object
The query:
df[(df['Year_Month'] == current_month_year) | (df['Year_Month'] == last_month_year)]
The dates consist of "year" and "month" and are of the format "Year_Month", e.g., "2020-01".
I had a few attempts at converting them into the same data type but there are always certain issues. What’s the best data type to convert these three data types into to compare them? Thanks.
Convert both 'Year_Month' column and current_month_year to datetime64[ns] type using the pd.to_datetime() method
df['Year_Month'] = pd.to_datetime(df['Year_Month'])
current_month_year = pd.to_datetime(current_month_year)
out = df[(df['Year_Month'] == current_month_year) | (df['Year_Month'] == last_month_year)]