Google Apps Script – Get the Start Row and Length of Each Category in an Ordered Column in Google Sheets

Google Apps Script and Google Sheets

Quite often I will need to get the range of each category in an item and do something with it in Google Sheets. For example, I work in education, I will often have rows of students that are categorized by class sections. I will then be asked to do something like those sections like put each section of students in their own sheet or set alternating colors for each section to make the sheet easier to read.

Alternatively, you may want to grab sales data by region or sales items by a particular category and work with them in Google Apps Script.

The Example

Let’s say we want to get the range values of the follow sheet by planets. We will be categorizing our data by the Grouping, column C.

Grouping By Planet - Google Apps Script

First we don’t want to take into account the headers on the first row. Our first grouping will be Mars, followed by Jupiter, Uranus and Mercury. We want to know which column that each category starts on and how many of that category there are.

The Code

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Set the Paper Size and Orientation in a Doc Using Google Apps Script

Sometimes you need to prepare a Google Doc’s paper size and orientation programatically using Google Apps Script.

Unfortunately, you can’t just call for say, A4 in Landscape. Okay, not until now (see my code below).

Google Apps Script does provide a way to set the dimensions of your page  in the body class by using:

  • setPageWidth(pageWidth)
  • setPageHeight(pageHeight)

The page widths and heights are measured in PostScripts Points which is a bit of a pain too.

Here is an example of setting and A3 paper size in Landscape.

Ugh. What a chore. You need to find the dimensions of the paper in points.

Enter this little nifty function and your life will be so much easier:

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How to make multiple copies of a file with Python 3 and a file name list from an Excel sheet

Python 3, openPyXl, os,  shutil on Windows 10

The Problem

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 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.

Python 3 to the rescue:

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How to Create a Simple YouTube Download Program with a Progress Indicator in Python 3 with pytube

Python 3, pytube, os in Windows 10

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 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:

How do I download YouTube videos with Python 3 using 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 intentional 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.

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How to Check a User’s Home Directory for a Folder – Python 3

Python 3, OS, Example in Windows 10

If you are creating a program for a user where you want to store or use a file in the users home directory, it is not as easy as simply preparing a fixed file location like:

C:\Users\yagisanatode\

Because if another user on another computer tries to use your program they will start getting errors because their home directory might be something else like:

C:\Users\batman\

You can, however, get the users home directory by using Python’s os.path.expanduser method.

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How do I download YouTube videos with Python 3 using Pytube?

Python 3, pytube 9.0.6 in Windows 10. 

pytube is a very easy to use, light-weight library that you can sue to download YouTube Videos.

Installation can be achieved in the terminal or command prompt with pip:

To download a video from YouTube you don’t really have to do much. So much so that you can get everything you need from the shell and be downloading a video in two lines of code.

In line 2 you can see that we have copied and pasted our YouTube url. You can either use the one in the Address Bar on the one that appears when you click “Share” on YouTube.

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How do I reverse the Rows in A Column in Google Sheets?

Reverse Rows in Column in Google Sheets
My favourite Killjoy members. Column A – From most favourite. Column B Saving the best for last.

Sometimes you have a need to reverse a list quickly in Google Sheets.

That’s pretty easy to do if the list is sorted alphabetically. Just go on into the <Data> menu and choose from one of the sort functions. But what if the data you want to flip is not in alphabetical or numeric order?

Below are 3 ways to reverse your data:

For the examples below, I’ll be using a list of my favourite Killjoys characters. Yeah, I’m a sci-fi geek.

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How to Display an Entry in a Label – Tkinter Python 3

Python 3, Tkinter 8.6. GUI examples in Windows 10

Probably one of the most common things to do when using a Graphical User Interface (GUI) is to display something from an entry from the user.

Below is a simple example that allows the user to input text in a Tkinter Entry field and when they click “Enter” or use the <Return> or <Enter> button it will be displayed in a Tkinter Label.

The end result will look a little like this:

Display Entry in a Label in Tkinter with Python 3

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How to Center the Main Window on the Screen in Tkinter with Python 3

Python 3, Tkinter 8.6. GUI examples in Windows 10

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 center of the page or a little higher than center.

If you want a primer of window positioning, check out the following tutorial:

How Do I Change the Size and Position of the Main Window in Tkinter and Python 3

In Python 3, to put the main window in the center of the screen I use the following code:

Window Centered on the Screen in Tkinter with Python 3
Output in Windows 10

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How Do I Change the Size and Position of the Main Window in Tkinter and Python 3

Python 3, Tkinter 8.6. GUI examples in Windows 10

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 or the window and move it once it has first been put on the screen.

Initial Window Size

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