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).

Before you launch your business venture, consider and plan for the many costs, both one-time and ongoing, involved in starting a business. Many, or all, of the products featured on this page are from ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Open source refers to a software program or ...

British pharmaceutical firm GSK has pledged to invest $30bn (£22bn) in research and manufacturing in the US over the next five years. Announced at the start of US President Donald Trump's visit to the ...