如何查询数据框中的多个列？

Question

I'm taking a Data Science class that uses Python and this is a questions that stumped me today. "How many babies are named “Oliver” in the state of Utah for all years?" To answer this question we were supposed to use data from this set https://raw.githubusercontent.com/byuidatascience/data4names/master/data-raw/names_year/names_year.csv

So I started by loading in pandas.

import pandas as pd

Then I loaded in the data set and created a data frame

url='https://raw.githubusercontent.com/byuidatascience/data4names/master/data-raw/names_year/names_year.csv'

names=pd.read_csv(url)

Finally I used the .query() method to single out the data type that I wanted, the name Oliver.

oliver=names.query("name == 'Oliver'")

I eventually found the total number of babies that had been named Oliver in Utah using this code

total=pd.DataFrame.sum(quiz)

print(total)

but I wasn't sure how to single out the data for both the name and the state, or if that is even possible. Is there anyone out there that knows of a better way to find this answer?

Answer 1

You have all the code there you just need one more line to Sum accordint to the state:

print(oliver.UT.sum()) # this will give you the total for the state of UTAH

and forget about the quiz.