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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).

Logical reasoning close logical reasoningUsing agreed rules to think about information and solve problems. is a way of thinking that uses rules. It helps us: Sometimes we can work rules out for ...

Peter Gratton, Ph.D., is a New Orleans-based editor and professor with over 20 years of experience in investing, risk management, and public policy. Peter began covering markets at Multex (Reuters) ...