在Go中从CSV文件读取仅打印最后一行

Question

I'm trying to read contents from a csv file. I have the following but when I run the code it only prints the last line of the csv file.

func main() {
    f, err := os.Open("data.csv")

    if err != nil {
        log.Fatal(err)
    }

    defer f.Close()

    r := csv.NewReader(f)

    for {
        record, err := r.Read()

        if err == io.EOF {
            break
        }

        if err != nil {
            log.Fatal(err)
        }

        fmt.Println(record)
    }
}

// Returns
10 3311 74209 OM209] site

What am I doing wrong?

data.csv

Item,clientid,ident,site
1,2493,83982,OM221
2,2509,85764,OM201
3,2535,70264,OM205
4,2608,70648,OM205
5,2766,83647,OM304
6,2871,69400,OM201
7,2933,80024,OM201
8,2994,77827,OM301
9,3206,73315,OM201
10,3311,74209,OM209

Answer 1

Thanks to @Volker for the mention about proper line endings.

My csv file was created with an old version of Excel for Mac which apparently has issues with creating proper line endings.

On a Mac, Excel produces csv files with the wrong line endings, which causes problems for git (amongst other things).This issue plagues at least Excel 2008 and 2011, and possibly other versions. Basically, saving a file as comma separated values (csv) uses a carriage return rather than a line feed as a newline. Way back before OS X, this was actually the correct Mac file ending, but after the move to be more unix-y, the correct line ending should be . Given that nothing has used this as the proper line endings for over a decade, this is a bug.

https://nicercode.github.io/blog/2013-04-30-excel-and-line-endings/

Creating a new file blank file and pasting in the contents fixed it.