如何在 Python 中读取一行 csv 数据? [英] How to read one single line of csv data in Python?

问题描述

用python读取csv数据的例子有很多，比如这个:

There is a lot of examples of reading csv data using python, like this one:

import csv
with open('some.csv', newline='') as f:
  reader = csv.reader(f)
  for row in reader:
    print(row)

我只想读取一行数据并将其输入到各种变量中.我怎么做?我到处寻找工作示例.

I only want to read one line of data and enter it into various variables. How do I do that? I've looked everywhere for a working example.

我的代码只检索 i 的值，不检索其他值

My code only retrieves the value for i, and none of the other values

reader = csv.reader(csvfile, delimiter=',', quotechar='"')
for row in reader:
  i = int(row[0])
  a1 = int(row[1])
  b1 = int(row[2])
  c1 = int(row[2])
  x1 = int(row[2])
  y1 = int(row[2])
  z1 = int(row[2])

推荐答案

要仅读取 csv 文件的第一行，请使用 next() 在阅读器对象上.

To read only the first row of the csv file use next() on the reader object.

with open('some.csv', newline='') as f:
  reader = csv.reader(f)
  row1 = next(reader)  # gets the first line
  # now do something here 
  # if first row is the header, then you can do one more next() to get the next row:
  # row2 = next(f)

或:

with open('some.csv', newline='') as f:
  reader = csv.reader(f)
  for row in reader:
    # do something here with `row`
    break

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