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The public API is still not stable and it is a very good idea to read release notes and migration guide before each update. Performance matters mostly for large files. For small files, few ms here or ...

Get Python installed on your computer, no matter the operating system. Learn about Python’s data types like strings, lists, ...

It handles XLSX/XLSM documents (Microsoft Excel 2007+, Office Open XML Workbook) using fast and simple low-level ZIP & XML manipulations, without requiring any library dependency, while minimising ...