python - 为什么我的硬编码数据没有写入文件？

Question

def write_to_csv():
    newRow = ['P12467','Cat','Ancora','Yes','Yes','D123456','Lost','14/09/2019','30/09/2019','return to owner',"290 Oak Avenue, BS79 8TR"]

    //with open('DADSA 2019-20 CWK A DATA PETS.csv', 'wb') as csv_file:
    with open("DADSA 2019-20 CWK A DATA PETS.csv", mode="a", newline='') as csv_file:
        # reader = csv.reader(csv_file)
        writer = csv.writer(csv_file)
        for row in csv.reader(csv_file):
            if row[0] == newRow[0]:
                writer.writerow(newRow)

我收到此错误“对于 csv.reader(csv_file) 中的行:io.UnsupportedOperation:不可读”我不太明白它的意思。

Answer 1

您有一个拼写错误，您应该使用 newRow，而不是 csvFile，修复了以下代码:

def write_to_csv():
    newRow = ['P12467','Cat','Ancora','Yes','Yes','D123456','Lost','14/09/2019','30/09/2019','return to owner',"290 Oak Avenue, BS79 8TR"]

    #with open('DADSA 2019-20 CWK A DATA PETS.csv', 'wb') as csv_file:
    with open("DADSA 2019-20 CWK A DATA PETS.csv", mode="a", newline='') as csv_file:
        # reader = csv.reader(csv_file)
        writer = csv.writer(csv_file)
        for row in csv.reader(newRow):
            if row[0] == newRow[0]:
                writer.writerow(newRow)