我在代码中犯了什么错误？

Question

For some reason my code doesn't seem to add to q, it prints out 0 for q even though there are 11 lines in the csv file, all I want to check if the csv file is empty, the code doesn't work in my script, but in the python console it works fine.

with open('File.csv', 'r') as FILE:
    q=0;LS = reader(FILE, delimiter=',')
    for i in LS:
        q+=1
    print q

Can anybody tell me what mistake I making? I am really confused.

Answer 1

Are you sure the file name is correct and in the same folder? I ran your script with a csv file I quickly made (contents: 1,2) and it outputted 1 as expected. Also make sure that your example code can be executed by itself, so include from csv import reader in the future.

Answer 2

i正在迭代LS的行，所以如果你有一行1行，它将是1，如果你有一个空文件它将是0，等等...我怀疑你的文件是空的，或者开放了没有成功。