- VIDEOS HOME PAGE
- .NET (14)
- Business Intelligence (40)
- Integration Services (19)
- Macros and Programming (82)
- Microsoft Excel (69)
- Microsoft Office (91)
- Miscellaneous (1)
- Power BI (35)
- Python (31)
- Report Builder (107)
- Reporting Services (113)
- SQL (42)
- Visual Basic for Applications (215)
- Visual C# (14)
- Python Part 1 - Getting started with Python
- Python Part 2 - Installing and customising Visual Studio Code
- Python Part 3 - Ranges, loops and formatting
- Python Part 4 - Virtual Environments
- Python Part 5 - Modules
- Python Part 6 - Debugging
- Python Part 7a - Sequences: iterating using for loops
- Python Part 7b - Sequences: slicing
- Python Part 7c - Sequences: other techniques
- Python Part 8 - List Comprehensions
- Python Part 9 - Files and Folders
- Python Part 10 - Sets
- Python Part 11 - Dictionaries
- Python Part 12a - Functions
- Python Part 12b - Advanced Functions
- Python Part 13 - Error-trapping
- Python Part 14a - Working with numbers
- Python Part 14b - Working with Booleans
- Python Part 14c - Working with dates/times
- Python Part 14d - Working with strings
- Python Part 15 - Scraping websites
- Python Part 16a - Linking to SQL Server
- Python Part 16b - Linking to CSV files
- Python Part 16c - Linking to JSON files
- Python Part 17a- Excel using openpyxl
- Python Part 17b - VBA using pywin32
- Python Part 18 - NumPy
- Python Part 19 - Pandas
- Python Part 20 - Working with Power BI Desktop
- Python Part 21a - Programming using classes
- Python Part 21b - Case study on classes (hangman)
Python videos | Python Part 7a - Sequences: iterating using for loops
Posted by Andy Brown on 13 October 2021
Iterating sequences has a good claim to be the most important topic in Python. This tutorial shows the four types of sequences (tuples, lists, ranges and strings), explains how to loop over them and gives 4 practical examples of their use.
This video has the following accompanying files:
|Lists and tuples.py||Python code||Creating lists and tuples|
|Ranges and strings.py||Python code||Ranges and strings as sequences|
|Looping over sequences.py||Python code||Looping over different types of sequence|
|Example 1 - listing files.py||Python code||Case study 1 - listing files in folder|
|Example 2 - listing words.py||Python code||Case study 2 - listing words in quotation|
|Example 3 - listing module names.py||Python code||Case study 3 - listing built-in module names|
|Example 4 - listing hyperlinks.py||Python code||Case study 4 - listing web page hyperlinks|
Click to download a zipped copy of the above files.
After watching this video, you may like to test your understanding by doing one or more of the following exercises:
You can also download the answers to each exercise from the links above.
Making a video bigger
You can increase the size of your video to make it fill the screen like this:
Play your video (the icons shown won't appear until you do), then click on the full screen icon which appears as shown at its bottom right-hand corner.
When you've finished viewing a video in full screen mode, just press the Esc key to return to normal view.
Improving the quality of a video
To improve the quality of a video, first click on the Settings icon:
Make sure you're playing your video so that the icons shown appear, then click on this gear icon at the bottom right-hand corner.
Choose to change the video quality:
Click on Quality as shown to bring up the submenu.
The higher the number you choose, the better will be your video quality (but the slower the connection speed):
Don't choose the HD option unless you have a fast enough connection speed to support it!
Is your Wise Owl speaking too slowly (or too quickly)? You can also use the Settings menu above to change your playback speed.