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The file downloaded by the wx.downloadFile interface of wechat applet is downloaded to the wechat server, and the return value is a temporary address. To save for a long time, call the wx.saveFile interface to save the file to the local cache. Although it is saved to the mobile phone, you cannot open it through the document man ...

For tables with large amount of data, when we need to calculate some special values, we can effectively improve the speed and efficiency of our data processing by using formulas, and it is also very convenient for batch operations such as adding, deleting, modifying and querying later data. In addition, for the information source of some values ...

The next week I came to the company, I received a development request for a timed task: Send a user report mail every morning at 10:00 a.m.It's a little embarrassing that the new recruits didn't do this.) so decided to write step by step, export from excel - > mail send - > timer implementation - > mapper layer return set receive, the ...

I. use of openpyxl pip install openpyxl Step 1: open the Workbook (read all the data in the Excel file and save it as a workbook object) workbook = openpyxl.load_workbook('cases.xlsx') Step 2: select the form object sheet = workbook['login'] Step 3: select a form to read data ① read content (line 5, column 4) data = sheet.cell(row=5,column=4) p ...

1. json file processing 1.1 What is json JSON(JavaScript Object Notation) is a lightweight data exchange format.It is based on a subset of ECMAScript, the JS specification developed by the European Computer Association, and uses a text format that is completely independent of the programming language to store and represent data.The concise and ...

That's six steps to upload! I. Configuration in settings configuration file MEDIA_URL = '/media/' MEDIA_ROOT = os.path.join(BASE_DIR, 'medias').replace('\\', '/')#media is the root path for picture upload 2. Configuring in url routing urlpatterns = [ url(r'^admin/', admin.site.urls), url(r'^index/', views.index,name='index'), ] + stati ...

Recently, some users always reported that "failure - server problem" will occur when they download large Excel from Redash, and the time from point to error prompt is almost the same. First, I checked the error log of Nginx, and it showed that upstream prematurely closed connection while sending to client. The first reaction should be ...

Form control is often used in front-end pages. To facilitate the design and filling of forms, today we try to use a pure front-end form control. Control download address: https://www.grapecity.com.cn/... Free online Excel: https://demo.grapecity.com.cn...   Initialize Spread first var spread = new GC.Spread.Sheets.Workbook(document.getEleme ...

There is a group of task data, which needs to be downloaded from excel. If it is only exported, it is very convenient to export with csv. But to export beautiful styles, you need to merge cells, set back color, font, border, etc. CSV is in plain text format and does not support setting various styles. After a day of research, I wrote the c ...

Install class library Download PHPExcel class library from GitHub Address: https://github.com/PHPOffice/PHPExcel After unzipping, move the Classes folder to the extend directory of ThinkPHP and rename it phpexcel Add references where needed in the project import('phpexcel.PHPExcel', EXTEND_PATH); code implementation <?php namespace app\ind ...