以字典的方式读写csv文件

#写
def write_dict():
    with open('phone.csv','w')as f:
        writer = csv.DictWriter(f, fieldnames=("id",'name','phone'))
        
        writer.writeheader()   #写入头
        writer.writerow({'id':101,'name':'swt','phone':'123456789'})
        writer.writerow({'id':102,'name':'zs','phone':'123451111'})
        writer.writerow({'id':103,'name':'lt','phone':'123422229'})
        writer.writerow({'id':104,'name':'bw','phone':'1234563333'})
    print('写入成功')

#读
with open('phone.csv','r')as f:
    reader = csv.DictReader(f,fieldnames=('id','name','phone'))
    for i in reader:
        print(i)

得出的结果为：

OrderedDict([('id', 'id'), ('name', 'name'), ('phone', 'phone')])
OrderedDict([('id', '101'), ('name', 'swt'), ('phone', '123456789')])
OrderedDict([('id', '102'), ('name', 'zs'), ('phone', '123451111')])
OrderedDict([('id', '103'), ('name', 'lt'), ('phone', '123422229')])
OrderedDict([('id', '104'), ('name', 'bw'), ('phone', '1234563333')])