第一种写入,用的是()
注意这里面的writerows使用的()—开始我因为最后得到的行是tuple元组,最后经过实验发现,仍旧是list列表
with open(r'D:\lagua\study\coding\pythonPractice\test.csv','w',newline='',encoding = 'utf-8') as f:
l1 = [0,1,2]
l2 = [1,2,3]
l3 = [2,3,4]
writer = csv.writer(f)
writer.writerows((l1,l2,l3))
第二种写入,用的是[]
with open(r'D:\lagua\study\coding\pythonPractice\test.csv','w',newline='',encoding = 'utf-8') as f:
l1 = [0,1,2]
l2 = [1,2,3]
l3 = [2,3,4]
writer = csv.writer(f)
writer.writerows([l1,l2,l3])
经过实验,发现两者得到的均为list–指的是取数据时,第一行是list
测试代码如下
with open(r'D:\lagua\study\coding\pythonPractice\test.csv','r',newline='',encoding = 'utf-8') as f:
reader = csv.reader(f)
temp = []
for line in reader:
temp.append(line)
print(isinstance(temp[0],list))
结果为True