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Posted by Andy Brown on 25 October 2021
Instead of writing your code in a single long file you can (and should) call separate functions to handle discrete tasks. In addition to all the modules supplied by third parties, this tutorial shows you how to create your own libraries of useful functions.
This video has the following accompanying files:
|Action.csv||CSV file||CSV file of action films|
|Animation.csv||CSV file||CSV file of animation films|
|Comedy.csv||CSV file||CSV file of comedy films|
|Musical.csv||CSV file||CSV file of musicals films|
|Science fiction.csv||CSV file||CSV file of science fiction films|
|Get duration function.py||Python code||Get film duration in human readable format|
|Read CSV file.py||Python code||Read in a CSV file of films|
|Get film age.py||Python code||Get the age of a film|
|WOL_functions.py||Python code||Module containing all functions written|
|Complete example.py||Python code||Bringing all other functions together|
|Doc strings.py||Python code||Example of document strings|
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:
|Define a function to print out text with the correct length of underlining||Easy|
|Create functions to parse a quotation into a list of words and get some statistics about them||Standard|
|Write 3 functions to complete a system to extract countries from any given CSV file||Hard|
You can also download the answers to each exercise from the links above.
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|When:||21 Mar 22 at 14:08|
What is the difference between the function syntax used in the video:
def FunctionName(Parameter: DataType) -> ReturnDataType:
and the "usual" syntax:
Is it just a more detailed coding syntax for clarity purpuses or there are other reasons/benefits that make it preferable for someone to use it?
|When:||21 Mar 22 at 15:34|
The main difference is that when you type in Parameter., VS Code will know that the parameter should hold a string/int/float/whatever, and come up with the appropriate methods specific to this data type. But this is a pretty big advantage.
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