Selecting multiple columns in a Pandas dataframe
To select multiple columns in a pandas DataFrame, you can pass a list of column names to the indexing operator []. For example, if you have a DataFrame df with columns 'a', 'b', and 'c', you can select 'a' and 'c' using the following syntax:
df[['a', 'c']]This will return a new DataFrame with only the columns 'a' and 'c'.
You can also use the loc or iloc attributes to select multiple columns. For example, to select the same columns using loc, you would do:
df.loc[:, ['a', 'c']]This will return a new DataFrame with only the columns 'a' and 'c'. The : in the first index specifies that all rows should be included, and the list of columns ['a', 'c'] specifies which columns to include.
If you want to select multiple columns using their integer indices, you can use the iloc attribute like this:
df.iloc[:, [0, 2]]This will return a new DataFrame with the columns at indices 0 and 2, which are 'a' and 'c' in this case.
I hope this helps! Let me know if you have any questions.