Question

我有一个简单的场景，我将CSV中的分隔符从;（分号）更改为,（逗号）。以下是代码

代码：

import csv
semicolonin = csv.reader(r"C:\pyscripts\1.csv", delimiter=';')
commaout = csv.writer(r"C:\pyscripts\1.csv", delimiter=',')
for row in semicolonin:
    commaout.writerow(row)

但我收到错误。我错过了什么吗？

TypeError: argument 1 must have a "write" method

执行第commaout = csv.writer(r"C:\pyscripts\1.csv", delimiter=',')行时

。

Answer 1

您必须为writer方法提供一个文件对象，如下所示：

import csv
with open(r"C:\pyscripts\1.csv") as in_file, open(r"C:\pyscripts\1.csv", 'w') as out_file:
    semicolonin = csv.reader(in_file, delimiter=';')
    commaout = csv.writer(out_file, delimiter=',')
    for row in semicolonin:
        commaout.writerow(row)

Answer 2

您还可以使用熊猫：

import pandas as pd

f = pd.read_csv("C:\pyscripts\1.csv")
f.to_csv("C:\pyscripts\1.csv", sep=";")

在CSV中将分隔符从分号转换为逗号？

2 个答案: