As an academic administrator, I have to prepare 70 empty grade report spreadsheets templates at the end of each academic quarter: one for each of my teachers. Each copy of the template sheet needs to be named with the teacher’s name and class number. Then the quarter, title and year is appended to the end. For example:
Stephen Hawking 404-23 Q3 Grades 2017.xlsx
The hard way would be to copy and paste a file click the file and rename it, repeating the process 70 error-prone and mind wastingly dull times. I could also get the teachers to rename the file, but…they are teachers, not administrators so…yeah…errors again.
Some of my friends live in an area that really struggles to get decent internet speeds in the afternoons and evenings. So much so that they can barely watch a YouTube video at 144p some days, and that is not particularly useful if they are trying to watch a video with code or some technical specs on the screen.
They really needed to download the videos, but really did not trust the programs available online to download videos for me without spamming them with advertising or adding some malicious malware to their beloved computers.
Fortunately, someone developed a Python 3 library to do just that – pytube. In an earlier post I dive into some of the main aspects pytube:
In this post, I am going to show you a quick app that can be run in the Python shell to download videos that features a progress indicator (not quite a progress bar).
I’ve intentionally kept the program fairly limited so you can focus on the important parts. I’ll show you the code and an example of what it looks like when it is running first and then give you the breakdown where you can focus on what you need to know and ignore the rest.
When your first window loads in Tkinter it will generally appear slightly offset from the top left-hand corner of the screen. This is a fairly counter-intuitive location and most of the GUI driven programs that I run usually open at the centre of the page or a little higher than the center.
If you want a primer of window positioning, check out the following tutorial:
When you create your first window in Tkinter, you can set it’s starting size and position on the screen by using the geometry method.
When using this method, note that it only provides the window with the size and position when it is initialized. This means that the user can then change the size of the window and move it once it has first been put on the screen.
OpenPyXl is a Python open library that allows you to read and write Microsoft Excel files. Specifically, the ‘*.xlsx’ file extension. It helps you to create programs to create and modify files and automate your processes in excel.
NOTE: This post requires that you have some knowledge of Python and the OpenPyXl library. The library also needs to be installed for you to use.
Quite often, I find that I have to work with ranges of data that I need to either copy and paste into a new file or files, or copy > modify > paste into files.
The OpenPyXl library allows you to look at every cell of a file and either copy it or modify it by using the openpyxl.worksheet.Worksheet.cell() method. This method allows you to access each cell by the row and column as a numerical value.
Note! Unlike everything else in coding, rows and columns start with one(1) and not zero(0).
To select whole ranges of our data we need to iterate through it by both row and column and then store that data in a list to be pasted to the new file, spreadsheet or location that we desire.
The following example will take you through the process. For your own data you will need to modify the file, sheet and range locations. Everything else should be good to go.
You can find the whole code at the end of the post.
Why does your MS Excel look weird?
To be honest my screenshots of the ‘.xlsx files will be in Libreoffice. But this simple example will be able to load without issue in MS Excel.