问题：csv.writer().writerow()保存的csv文件，打开时每行后都多一行空行

一开始的代码如下：

def write_csv_file(path, head, data):
    try:
        with open(path, 'w') as csv_file:
            writer = csv.writer(csv_file, dialect='excel')

            if head is not None:
                writer.writerow(head)

            for row in data:
                writer.writerow(row)

            print("Write a CSV file to path %s Successful." % path)
    except Exception as e:
        print("Write an CSV file to path: %s, Case: %s" % (path, e))

每一行数据后面都自动增加了一个空行。

该问题解决方法：在open()内增加一个参数newline='' 即可，更改后代码结构如下：

def write_csv_file(path, head, data):
    try:
        with open(path, 'w', newline='') as csv_file:
            writer = csv.writer(csv_file, dialect='excel')

            if head is not None:
                writer.writerow(head)

            for row in data:
                writer.writerow(row)

            print("Write a CSV file to path %s Successful." % path)
    except Exception as e:
        print("Write an CSV file to path: %s, Case: %s" % (path, e))