解决方案是在构造函数中指定“ lineterminator”参数：
file = open('P:test.csv', 'w')fields = ('ItemID', 'Factor', 'FixedAmount')wr = csv.DictWriter(file, fieldnames=fields, lineterminator = 'n')wr.writeheader()wr.writerow({'ItemID':1, 'Factor': 2, 'FixedAmount':3})file.close()
