I’m putting together a small portfolio piece and need a concise Python script that builds a demo CSV of business leads using pandas. The script should spin up at least ten fictional companies—half tech-startup inspired, half consulting-firm style—each with a company name, email address, and phone number. Key details I must see in the output: every phone number must appear in full international format (e.g., “+1 415 555 0199”), and the email addresses should carry company-specific domains rather than generic ones. After writing the file the script should display the dataframe in the console and print a friendly success message so I can screenshot it directly from IDLE. I’m looking for clean, well-commented code that someone could quickly extend later to pull real data from an API or a web-scraping routine. Keep naming conventions clear and group any helper functions logically so it reads well on GitHub. Deliverables • A single .py file ready to run in Python 3.x • The generated CSV containing the ten demo leads Acceptance criteria • Columns: Company, Email, Phone in that order • Phone numbers match international pattern, no exceptions • Email domains reflect each company name • Script prints dataframe plus “CSV successfully created” (or similar) on completion That’s all—just a straightforward, professional script I can drop into my portfolio.