我将Django 2.17与SQLite 3.26数据库一起使用,并尝试从csv文件插入数据。我用的是get_或_create方法,但是太慢了。所以我开始尝试使用bulk_create插入。
我使用的模型字段如下:
class SENSOR_TEMPERATURA(models.Model):
ID_Sensor_Temperatura = models.AutoField(primary_key = True)
class VALOR_TEMPERATURA(models.Model):
ID_Valor_Temperatura = models.AutoField(primary_key = True)
ID_Sensor_Temperatura = models.ForeignKey(SENSOR_TEMPERATURA, on_delete = models.PROTECT, null = False, db_column = 'VATE_CD_ID_Sensor_Temperatura')
Data_De_Medição = models.DateTimeField(default = datetime.now(), null = False)
Valor = models.DecimalField(default = 0, null = False, max_digits = 30, decimal_places = 15)
print (datetime.datetime.now())
reader = csv.reader(f)
insert_CSV = []
count = 1
for row in reader:
insert_CSV.append([
VALOR_TEMPERATURA.pk(ID_Valor_Temperatura = count),
VALOR_TEMPERATURA(Data_De_Medição = datetime.datetime.strptime(row[0] + " UTC-0300",'%d/%m/%Y %H:%M:%S %Z%z')),
VALOR_TEMPERATURA(Valor = float(row[1])),
VALOR_TEMPERATURA(ID_Sensor_Temperatura = SENSOR_TEMPERATURA.objects.get(ID_Sensor_Temperatura = 4))
])
count = count + 1
print (datetime.datetime.now())
VALOR_TEMPERATURA.objects.bulk_create(insert_CSV)
print (datetime.datetime.now())
我认为让我陷入麻烦的部分是“ID_Sensor_temperaturea=Sensor_temperaturea.objects.get(ID_Sensor_temperaturea=4))”,但这正是我在使用get_或_create时定义外键的方式,所以我无法找出问题所在。
我得到以下错误:
6 for row in reader:
7 insert_CSV.append([
8 VALOR_TEMPERATURA.pk(VATE_CD_ID_Valor_Temperatura = count),
9 VALOR_TEMPERATURA(VATE_DF_Data_De_Medição = datetime.datetime.strptime(row[0] + " UTC-0300",'%d/%m/%Y %H:%M:%S %Z%z')),
10 VALOR_TEMPERATURA(VATE_VL_Valor = float(row[1])),
TypeError: 'property' object is not callable
有什么问题吗?
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