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Python Set Operations Explained: From Theory to Real-Time Applications

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A  set  in Python is an unordered collection of unique elements. It is useful when storing distinct values and performing operations like union, intersection, or difference. Real-Time Example: Removing Duplicate Customer Emails in a Marketing Campaign Imagine you are working on an email marketing campaign for your company. You have a list of customer emails, but some are duplicated. Using a set , you can remove duplicates efficiently before sending emails. Code Example: # List of customer emails (some duplicates) customer_emails = [ "alice@example.com" , "bob@example.com" , "charlie@example.com" , "alice@example.com" , "david@example.com" , "bob@example.com" ] # Convert list to a set to remove duplicates unique_emails = set (customer_emails) # Convert back to a list (if needed) unique_email_list = list (unique_emails) # Print the unique emails print ( "Unique customer emails:" , unique_email_list) Ou...
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Unix Special Keys That Improve Productivity

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Shared the UNIX terminal shortcut keys. These special keys you can use to stop the program processing, or resume it.


Top Special keys in Unix


An example of a UNIX special key and its use.

Special Keys in UNIX much useful to take action when something happens.

A scenario where you made some mistake in the input command and you need to stop the further process. Then you can use the CTRL+C command. It is equal to the DELETE command.


Unix Keyboard Shortcuts or Special Keys.



RETURN key 

The RETURN key signifies the end of a line of input. On any terminal, RETURN has a key of its own, or return may be typed by holding down the control key and typing a 'm'.


CTRL-m Key


Hint: Ctrl-m command is equal to RETURN key in Unix systems


DELETE Key

The DELETE key stops a program/command immediately, without waiting for it to finish. DELETE can be achieved equivalently with ctrl-c.

Hint: Ctrl-c Command you can use to interrupt the process.


CTRL-s Key

Ctrl-s pauses the output and the program is suspended until you start it again.

Hint: Ctrl-s Command to pause the process


CTRL-q Key

Ctrl-q resumes the program paused by ctrl-s.

Hint: Ctrl-q Command to resume the process


CTRL-g Key

Rings a bell on the terminal.


CTRL-h key

Can be used for backspace.


CTRL-i Key

Can be used for tab (eight spaces on the UNIX system).

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