os.path.join (folder, filename) ensures the path is correct for the system. On Windows, it uses backslashes (reports\summary.txt); on Linux and macOS it uses forward slashes (reports/summary.txt).

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Dr. James McCaffrey presents a complete end-to-end demonstration of linear regression with two-way interactions between ...

An investment banker is a consummate finance professional who helps companies, governments, and investors raise capital, issue securities, set IPO prices, and structure mergers and acquisitions. They ...