python3如何解决csv写的乱码

def save2csv(file_name=None, header=None, data=None):
"""
保存成CSV格式文件,方便Excel直接打开
:param file_name: 保存的文件名
:param header: 表头,每一列的名字
:param data: 具体填充数据
:return:
"""
if file_name is None or isinstance(file_name, basestring) is False:
raise Exception('保存CSV文件名不能为空,并且必须为字符串类型')
if file_name.endswith('.csv') is False:
file_name += '.csv'
file_obj = open(file_name, 'wb')
file_obj.write(codecs.BOM_UTF8) # 防止乱码
writer = csv.writer(file_obj)
if data is None or isinstance(data, (tuple, list)) is False:
raise Exception('保存CSV文件失败,数据为空或者不是数据类型')
if header is not None and isinstance(header, (tuple, list)) is True:
writer.writerow(header)
for row in data:
writer.writerow(row)