Pandas 数据框按索引选择行，按名称选择列

Question

Is there any way to select the row by index (ie integer) and column by column name in a pandas data frame?

I tried using loc but it returns an error, and I understand iloc only works with indexes.

Here is the first rows of the data frame df. I am willing to select the first row, column named 'Volume' and tried using df.loc[0,'Volume']

Answer 1

Use get_loc method of Index to get integer location of a column name.

Suppose this dataframe:

>>> df
    A  B  C
10  1  2  3
11  4  5  6
12  7  8  9

You can use .iloc like this:

>>> df.iloc[1, df.columns.get_loc('B')]
5