如何在python 3中求和一个简单的csv文件列？

Question

Beginner here, so sorry in advance for any stupid questions. I'm having trouble summing the column "Value" in the following simple csv file data set. Does anyone know how I could do this? I've included the code and output below:

Text:

import pandas as pd
file_name = "Roll_Data.csv"
pd.read_csv(file_name,delimiter='\t').dropna()

Output

Roll, Value

1     9.0
2     3.0
3     8.0
4     2.0

Answer 1

Choose "Value" series in your dataframe and call sum()

import pandas as pd

file_name = "Roll_Data.csv"
df = pd.read_csv(file_name,delimiter='\t').dropna()
df["Value"].sum()