Answer 1

startswith（）很简单。 x = txt.startswith（“ forsale _”）将返回一个bool，其中txt是您要测试的字符串。

有关更多涉及的模式匹配，您想查看正则表达式。类似的内容等效于startswith（）上面的行：

import re

txt = "forsale_arbitrarychars"
x = re.search("^forsale_", txt)

如果您要用^forsale_ [0-9]*替换forsale _在哪里替换。 $，它只会在下划线后接受INT

Answer 2

我使用此命令来生成迁移文件，

yarn run typeorm migration:generate -d ./ormconfig src/db/migrations/file-name-without-extension

生成具有自定义名称的迁移文件，使用 .sh file

软件包脚本

"migration:generate": "bash ./migrate.sh",

使用此命令使用自定义名称

yarn migration:generate file-name-without-extension

希望对您有帮助的迁移文件

Answer 3

是的，H2O.Explain使用提供的test_set。在您的情况下，混淆矩阵本身由h2o.confusionmatrix（object = mode@trade，newdata = test_set）生成。

混乱矩阵汇总来自h2o.predict的数据关于模型的表现的级别视图。 H2O.Predict为您提供个人预测，而无需任何聚合。

Answer 4

然后使用set_index然后转台：

创建数据

colNames = ['Desc', 'Round1', 'Round2', 'Round3', 'Round4', 'Round5', 'Round6', 'Round7', 'Round8', 'Round9', 'Round10']
df = pd.DataFrame(columns = colNames)
df.loc[len(df)] = ['Ben', '22.3', '33.3', '21.5', '27.7', '31.3', '43', '33.5', '20', '29.7', '22.7']
df.loc[len(df)] = ['Tom', '', '28.2', '29.2', '23.1', '25', '21.4', '22.3', '26.2', '25.3', '19.6']
df.loc[len(df)] = ['Jack', '21.3', '30.4', '20.8', '18', '24.5', '28.3', '32.6', '17', '25.1', '23.7']

预处理

df.set_index("Desc", inplace = True)
df = df.apply(pd.to_numeric, errors='coerce')

绘制该数据

df.T.plot()
plt.show()

提供的数据：

Answer 5

您可以使用多个连接器和请求过滤器进行操作。 （所有连接器均操作相同的方法）

   public FilterRegistrationBean javaMelodyRestrictingFilter(FilterRegistrationBean javaMelodyFilter) {...

2. spring boot 2.0在多个端口上聆听

这里的原始答案。 配置带有两个端口的Spring引导

Answer 6

您可以根据实体或枚举建模等级，这取决于等级的灵活性（始终为1-5，始终是AF，可按客户端配置？）。

恕我直言，学生与成绩的关系应该是像Aldissivegrade这样的实体，其中包含他/她的成绩和相关的科学界，并且对学生来说是一个很多人。

ScienceFair和等级本身是配置数据，而实现的磨损是“运行数据”。

我强烈建议至少在ScienceFair开始之后，不要允许可配置的成绩，因为这打开了有关历史化条目的一罐蠕虫。

Answer 7

您可以通过将它们放入数组中，然后做您已经在做的事情来删除一个有意的角色：

var str_result = input
var unwanted_chars = [".",",",":","?" ] #and so on

for c in unwanted_chars:
   str_result = str_result.replace(c,"")

我不确定您从长远来看要实现的目标，但是使用正则表达式可以更容易地解析字符串。因此，如果您想搜索字符串以获取Apecific模式，则应该研究一下：
regex

Answer 8

抱歉，如果这有点是基本或愚蠢的问题/建议，但是该文件当前在Windows中是否打开？ Python通常不喜欢访问您当前已打开的文件，并且会解释为什么它对他人有效，而不是您。

Answer 9

如果有恒定数量的键，则最容易为它们声明单独的变量：

key1, key2 = 'user', '_value'
print(data['waninfo']['1'][key1][key2])

如果您有一个变量（或非常大的）键，请使用值估算然后迭代其上的嵌套查找：

keys = 'user', '_value'
val = data['waninfo']['1']
for key in keys:
    val = val[key]
print(val)

Answer 10

我建议您通过Terraform部署云功能，但是云功能的CI由云构建（也由Terraform创建）维护，我认为这是最合乎逻辑的解决方案，因为Terraform管理基础结构而不是实现云功能。

Answer 11

不确定这是否会完全解决

if (depSpace < depSize){ //If the number of students currently assigned to the department is less than its capacity...
  ss.getRange("I2").offset(depSpace,k).setValue(studentName); //Copy the current student's name to that department column...
  i++;//Move on to next Student || THIS IS CAUSING ISSUES - why does this series not loop by itself without me iterating it?
  j=0;//And reset Choice counter j back to choice 1
}

问题

if (depSpace < depSize){ //If the number of students currently assigned to the department is less than its capacity...
  ss.getRange("I2").offset(depSpace,k).setValue(studentName); //Copy the current student's name to that department column...
  j = choices+1;  // will terminate j loop and continue i loop
  break;  // break out of k loop
}

您

if (responses[i] == undefined){ //Before declaring the next few variables, check and see if the counter is within the range of the array
  break; //Break the script if i=respCount before declaring the next variables, and terminate the script
  //This is only needed because I have to manually iterate the script following the nested ifs towards the end of the file
  //If this wasn't here, studentName[i] would look outside of array bounds and throw "TypeError: Cannot read property '0' of undefined"
}

我

的 OP不安全。它不能保证从另一个范围获得适当的行数。它需要2个getValues（）呼叫，并且最多可以长1000或更多的空行。

假设我们有以下电子表格。

function test() {
  try {
    let sheet = SpreadsheetApp.getActiveSpreadsheet().getSheetByName("Sheet2");
    const respCount = sheet.getRange("A1:A").getValues().filter(String).length //Number of responses to parse
    const responses = sheet.getRange("A1:D"+(respCount+1)).getValues() //All students & responses as an array. (+1) gets accurate range size due to header row
    console.log(respCount);
    console.log(responses);
  }
  catch(err) {
    console.log(err);
  }
}

2:10:50 PM  Notice  Execution started
2:10:51 PM  Info    5
2:10:51 PM  Info    [ [ 'A', 1, '', '' ],
  [ 'B', 2, '', '' ],
  [ 'C', 3, '', '' ],
  [ '', 4, '', '' ],
  [ '', 5, '', '' ],
  [ 'D', 6, '', '' ] ]
2:10:51 PM  Notice  Execution completed

最喜欢的方法IMHO。它打电话给所有值并从空白开始，以获取所有值并过滤行。我不需要2个阵列可以使用。它还只能获得包含数据的行。

function test() {
  try {
    let sheet = SpreadsheetApp.getActiveSpreadsheet().getSheetByName("Sheet2");
    let responses = sheet.getDataRange().getValues();
    responses = responses.filter( row => row[0] !== "" );
    console.log(responses);
  }
  catch(err) {
    console.log(err);
  }
}

2:12:23 PM  Notice  Execution started
2:12:24 PM  Info    [ [ 'A', 1 ],
 [ 'B', 2 ],
 [ 'C', 3 ],
 [ 'D', 6 ],
 [ 'E', 7 ] ]
2:12:24 PM  Notice  Execution completed

Answer 12

在PageView Builder返回listView带有缩水：True将解决您的问题。在下面查看代码：

sliderDetailSpage

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';

class SliderDetailsPage extends StatefulWidget {
  const SliderDetailsPage({Key? key}) : super(key: key);

  @override
  _SliderDetailsPageState createState() => _SliderDetailsPageState();
}

class _SliderDetailsPageState extends State<SliderDetailsPage> {
  final _controller = PageController();
  int _currentPage = 0;
  var staticData = [];

  @override
  void initState() {
    // TODO: implement initState
    super.initState();
    staticData = [
      {
        "title": "Idea 1",
        "description":
        "Growing with & according to the market trends & achieving the best possible outcome is what we believe at BONANZA. We have also got various titles and achievements under our belt, Bonanza looks forward to tougher challenges and newer milestones to conquer, so that our customer gets nothing less than the BEST! Growing with & according to the market trends & achieving the best possible outcome is what we believe at BONANZA. We have also got various titles and achievements under our belt, Bonanza looks forward to tougher challenges and newer milestones to conquer, so that our customer gets nothing less than the BEST!, Growing with & according to the market trends & achieving the best possible outcome is what we believe at BONANZA. We have also got various titles and achievements under our belt, Bonanza looks forward to tougher challenges and newer milestones to conquer, so that our customer gets nothing less than the BEST!",
      },
      {
        "title": "Idea 2",
        "description":
        "Growing with & according to the market trends & achieving the best possible outcome is what we believe at BONANZA. We have also got various titles and achievements under our belt, Bonanza looks forward to tougher challenges and newer milestones to conquer, so that our customer gets nothing less than the BEST! ,Growing with & according to the market trends & achieving the best possible outcome is what we believe at BONANZA. We have also got various titles and achievements under our belt, Bonanza looks forward to tougher challenges and newer milestones to conquer, so that our customer gets nothing less than the BEST!",
      },
      {
        "title": "Idea 3",
        "description":
        "Growing with & according to the market trends & achieving the best possible outcome is what we believe at BONANZA. We have also got various titles and achievements under our belt, Bonanza looks forward to tougher challenges and newer milestones to conquer, so that our customer gets nothing less than the BEST!",
      },
    ];
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        backgroundColor: Colors.white,
        appBar: AppBar(
          title: Text(
            "Blooming Business",
            style: TextStyle(fontSize: 16),
          ),
          leading: Builder(
            builder: (BuildContext context) {
              return IconButton(
                icon: Icon(Icons.arrow_back_ios_rounded),
                onPressed: () {
                  Navigator.pop(context);
                },
                tooltip: '',
              );
            },
          ),
          elevation: 0,
          backgroundColor: Colors.blue,
        ),
        body: Stack(children: [
          Container(
            color: Colors.blue,
            height: 55,
            padding: EdgeInsets.only(left: 20, right: 20),
            child: Row(
              mainAxisAlignment: MainAxisAlignment.spaceBetween,
              children: [
                InkWell(
                  onTap: () {
                    if (staticData.length != 0) {
                      _controller.previousPage(
                        duration: const Duration(milliseconds: 200),
                        curve: Curves.easeIn,
                      );
                    }
                  },
                  child: Container(
                    width: 24,
                    height: 24,
                    decoration: BoxDecoration(
                      borderRadius: BorderRadius.circular(3),
                      color: Colors.blue,
                    ),
                    child: Icon(
                      Icons.arrow_back_ios_outlined,
                      color: Colors.white,
                      size: 17,
                    ),
                  ),
                ),
                Text(
                  "${staticData[_currentPage]["title"]}",
                  style: TextStyle(fontSize: 16),
                ),
                InkWell(
                  onTap: () {
                    if (staticData.length != 0) {
                      _controller.nextPage(
                        duration: const Duration(milliseconds: 200),
                        curve: Curves.easeIn,
                      );
                    }
                  },
                  child: Container(
                    width: 24,
                    height: 24,
                    decoration: BoxDecoration(
                      borderRadius: BorderRadius.circular(3),
                      color: Colors.blue,
                    ),
                    child: Icon(
                      Icons.arrow_forward_ios_rounded,
                      color: Colors.white,
                      size: 17,
                    ),
                  ),
                ),
              ],
            ),
          ),
          Padding(
            padding: const EdgeInsets.only(top: 55.0),
            child: PageView.builder(
                physics: NeverScrollableScrollPhysics(),
                controller: _controller,
                itemCount: staticData.length,
                onPageChanged: (value) =>
                    setState(() => _currentPage = value),
                itemBuilder: (BuildContext context, int index) {
                  return ListView(
                    shrinkWrap: true,
                      children: [
                    Text(
                      "${staticData[_currentPage]["description"]}",
                      style:
                      TextStyle(fontSize: 16, color: Colors.grey),
                    ),
                    SizedBox(
                      height: 10,
                    ),
                    Text(
                      "${staticData[_currentPage]["description"]}",
                      style:
                      TextStyle(fontSize: 16, color: Colors.grey),
                    ),
                  ]);
                }),
          ),
        ]));
  }
}

Answer 13

我的用户名对我说了很多XD
我已经在使用拼写错误的sastined_apps中键入“ grappelli”。

Answer 14

关闭所有其他，然后打开电流。

const toggleElements = document.querySelectorAll('.accordion__item');

toggleElements.forEach(el => {
  el.addEventListener('click', function() {
    toggleElements.forEach(el => el.classList.remove('is-active'));
    this.classList.add('is-active');
  });
});

Answer 15

由于 s 在widths建议中，您可以传递宽度列表：

pd.read_fwf(io.StringIO(txt), widths=[8,20,3,3,7,2,8,1,99], header=None)

输出：

          0                     1    2    3     4   5         6    7      8
0  59967Y98              Doe John  621  110  4545  SO  20140314    -  24278
1  N0546664         SCHMIDT-PETER  744  110  8300  AW  20140314    -  23643
2  G4894jmh     TAKLONSKY-JUERGEN  421  110  5000  TB  20140315  NaN  23882
3  34875738  PODESBERG-SCHUMPERTS  621  110  3671  SO  20140315  NaN  24622

如果您想要名称和dtypes：输出：

df = (pd.read_fwf(io.StringIO(txt), widths=[8,20,3,3,7,2,8,1,99], header=None,
                  names=['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I'],
                  dtypes=[str, str, int, int, int, str, str, str, int])
        .assign(**{'G': lambda d: pd.to_datetime(d['G'], format='%Y%m%d')})
     )

输出：

          A                     B    C    D     E   F          G    H      I
0  59967Y98              Doe John  621  110  4545  SO 2014-03-14    -  24278
1  N0546664         SCHMIDT-PETER  744  110  8300  AW 2014-03-14    -  23643
2  G4894jmh     TAKLONSKY-JUERGEN  421  110  5000  TB 2014-03-15  NaN  23882
3  34875738  PODESBERG-SCHUMPERTS  621  110  3671  SO 2014-03-15  NaN  24622

df.dtypes
A            object
B            object
C             int64
D             int64
E             int64
F            object
G    datetime64[ns]
H            object
I             int64
dtype: object