[type.CLEAR_USER]
时间: 2024-01-05 15:04:19 浏览: 12
I'm sorry, I am not sure what you mean by "[type.CLEAR_USER]". Could you please provide more context or information so I can better understand your request?
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Traceback (most recent call last): File "task1/test1.py", line 32, in <module> choose_data=tk.choose_data(data) File "/data/workspace/myshixun/task1/task1.py", line 16, in choose_data data_time=pd_datetime[date.time] NameError: name 'pd_datetime' is not defined我该怎么修改
这个错误提示是因为代码中使用了一个不存在的变量`pd_datetime`。我猜测你的代码中想要使用`pandas`库中的`to_datetime`函数将时间字符串转换为`datetime`类型,并且这个函数名字写错了。你需要将`pd_datetime`改成`pd.to_datetime`,并且将`date.time`改成`data['time']`,如下所示:
```
import pandas as pd
import numpy as np
def choose_data(data):
# 选择变量'user_id', 'time', 'model_id', 'type', 'cate', 'brand',
# 选取time在2016-02-01及以后的数据(包含2016-02-01)且type=6,
# 数据类型如下:
# user_id sku_id time model_id type cate brand
# 0 266079 138778 2016-01-31 23:59:02 NaN 1 8 403
# 1 266079 138778 2016-01-31 23:59:03 0.0 6 8 403
# 2 200719 61226 2016-01-31 23:59:07 NaN 1 8 30
# 3 200719 61226 2016-01-31 23:59:08 0.0 6 8 30
# 4 263587 72348 2016-01-31 23:59:08 NaN 1 5 159
########## Begin ##########
data['time'] = pd.to_datetime(data['time']) # 转换时间格式为datetime类型
data = data[(data['time'] >= '2016-02-01') & (data['type'] == 6)]
########## End ##########
return data
def sample_data(data):
# 使用pd.DataFrame.sample函数进行随机抽样,不放回的随机抽取5000个样本,
# 数据结构如下:
# user_id sku_id time model_id type cate brand
# 0 266079 138778 2016-01-31 23:59:02 NaN 1 8 403
# 1 266079 138778 2016-01-31 23:59:03 0.0 6 8 403
# 2 200719 61226 2016-01-31 23:59:07 NaN 1 8 30
# 3 200719 61226 2016-01-31 23:59:08 0.0 6 8 30
# 4 263587 72348 2016-01-31 23:59:08 NaN 1 5 159
########## Begin ##########
data = data.sample(n=5000, replace=False)
########## End ##########
return data
def clear_data(df):
# 根据提示补全下列操作,请在已有的代码上添加操作,
# 不要改动原有的变量名,案例数据结构如下:
# col1 col2 col3 col4
# 0 -1.055712 -0.196175 -0.813023 -0.806857
# 1 0.972878 NaN -1.722135 -0.638893
# 2 0.444641 -0.189607 -0.199307 3.496211
# 3 0.273065 -1.970887 0.954170 0.823823
# 4 0.729248 -1.036644 1.398436 NaN
# 5 -0.323439 0.208351 -0.429920 -0.175628
########## Begin ##########
nan_result_pd1 = df.dropna()
########## End ##########
return nan_result_pd1
```
for (int i=0; i<dataArray.count(); i++) { T_departmentInfo departmentInfo; departmentInfo.label.clear();// = dataArray.at(i).toObject().value("label").toString();; departmentInfo.departmentId = dataArray.at(i).toObject().value("departmentId").toString(); departmentInfo.departmentName = dataArray.at(i).toObject().value("departmentName").toString(); departmentInfo.departmentType = dataArray.at(i).toObject().value("departmentType").toInt();; //部门类型 0普通 1独立 departmentInfo.parentId.clear();// = dataArray.at(i).toObject().value("parentId").toString(); departmentInfo.phone.clear();// = dataArray.at(i).toObject().value("phone").toString(); departmentInfo.userId.clear();// = dataArray.at(i).toObject().value("userId").toString(); //空为部门,非空为员工 departmentInfo.userName.clear();// = dataArray.at(i).toObject().value("userName").toString(); departmentInfo.picture.clear();// = dataArray.at(i).toObject().value("picture").toString(); QStandardItem* item = new QStandardItem(departmentPersonModel->rowCount()); departmentPersonModel->appendRow(item); QModelIndex index = departmentPersonModel->indexFromItem(item); PersonItem *personItem = new PersonItem(ui->listView_department_person); personItem->setDepartmentInfo(departmentInfo); ui->listView_department_person->setIndexWidget(index, personItem);
对于这段代码,我们可以进行如下几个方面的优化:
1. 减少重复调用
在这段代码中,dataArray.at(i).toObject() 出现了多次,这样会增加不必要的计算。我们可以将其提取出来,赋值给一个对象,然后多次使用这个对象,从而减少计算量。
2. 优化数据类型
在这段代码中,对于一些字符串类型的变量,如parentId、phone、userId、userName、picture等,都是用clear()方法赋空值,这种方式比较耗费资源。我们可以将这些变量改为QString类型,并且在定义时就赋值为空字符串"",这样就不需要调用clear()方法了。
3. 减少创建对象
在这段代码中,每次循环都会创建一个QStandardItem和一个PersonItem对象,这样会占用大量的内存资源。我们可以将这些对象的创建放到循环外面,并且使用一个指针数组保存这些对象的指针,在循环中重复利用这些对象,从而减少内存的占用。
下面是优化后的代码:
```c++
QJsonObject obj;
for (int i = 0; i < dataArray.count(); i++) {
obj = dataArray.at(i).toObject();
T_departmentInfo departmentInfo;
departmentInfo.departmentId = obj.value("departmentId").toString();
departmentInfo.departmentName = obj.value("departmentName").toString();
departmentInfo.departmentType = obj.value("departmentType").toInt(); //部门类型 0普通 1独立
departmentInfo.parentId = obj.value("parentId").toString();
departmentInfo.phone = obj.value("phone").toString();
departmentInfo.userId = obj.value("userId").toString(); //空为部门,非空为员工
departmentInfo.userName = obj.value("userName").toString();
departmentInfo.picture = obj.value("picture").toString();
PersonItem *personItem = nullptr;
QStandardItem *item = nullptr;
if (i < itemArray.size()) {
item = itemArray.at(i);
personItem = static_cast<PersonItem *>(ui->listView_department_person->indexWidget(departmentPersonModel->indexFromItem(item)));
} else {
item = new QStandardItem(departmentPersonModel->rowCount());
departmentPersonModel->appendRow(item);
personItem = new PersonItem(ui->listView_department_person);
itemArray.append(item);
widgetArray.append(personItem);
}
item->setData(departmentInfo.departmentId, Qt::UserRole);
personItem->setDepartmentInfo(departmentInfo);
ui->listView_department_person->setIndexWidget(departmentPersonModel->indexFromItem(item), personItem);
}
```