將分號從分號轉換爲CSV中的逗號？

Question

我有一個簡單的場景，我將CSV中的分隔符從;（分號）更改爲,（逗號）。下面是代碼

代碼：

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) 

但是我收到一個錯誤。我錯過了什麼嗎？

TypeError: argument 1 must have a "write" method 

在執行線commaout = csv.writer(r"C:\pyscripts\1.csv", delimiter=',')。

Answer 1

你必須提供一個文件對象的作家方法，像這樣：

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)