如何在Python中读取一行csv数据? [英] How to read one single line of csv data in Python?
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问题描述
有很多使用python读取csv数据的示例,例如:
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?我已经找到了一个工作示例。
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,而没有其他值
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
要只读取csv文件的第一行,请使用 next()
。
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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