CSV文件的列数总和

Question

>The column has first OPEN in first error and then all the numbers(around 50 numbers for 50 different days) TypeError: 'float' object is not iterable --> strong text

import csv
with open("TCS_PAST.csv") as csvfile:
    readCSV = csv.reader(csvfile, delimiter = ',')
    next(readCSV)

    for row in readCSV:
        a = float(row[3].replace(",",""))
        print (a)
        print(sum(a)) -->

Answer 1

I can only guess what you are trying to accomplish here, but let me try:

• the commas are already removed by csv.reader() , no need in calling replace()

• each line returned by csv.reader() is a list of strings which are floating numbers from your file. If you want to process elements starting with the third one you should write

  a = [float(x) for x in row[3:]]

then a would be an array of floating numbers.