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).

Quantum metals are metals where quantum effects—behaviors that normally only matter at atomic scales—become powerful enough ...

Providing utility professionals with critical information related to the planning, design, construction, operations, maintenance and safety of transmission and distribution facilities, including ...