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Pandas (styled as pandas) is a software library written for the Python programming language for data manipulation and analysis.In particular, it offers data structures and operations for manipulating numerical tables and time series.
On 5 January 1975, the 12-bit field that had been used for dates in the TOPS-10 operating system for DEC PDP-10 computers overflowed, in a bug known as "DATE75". The field value was calculated by taking the number of years since 1964, multiplying by 12, adding the number of months since January, multiplying by 31, and adding the number of days since the start of the month; putting 2 12 − 1 ...
Year Name Chief developer, company Predecessor(s) 2020 C++20: C++ ISO/IEC 14882:2020 C++17, Standard C, C: 2021 Microsoft Power Fx: Vijay Mital, Robin Abraham, Shon Katzenberger, Darryl Rubin, Microsoft: Excel formulas: 2022 Carbon: Google C++, Rust: 2023 Mojo: Modular Python: 2023 Fortran 2023: ISO/IEC JTC1/SC22 2023 Fortran 2018: 2024 Gleam ...
[82] [83] Thus, a formula counting dates between (for example) February 1, 1900 and March 1, 1900 will return an incorrect result. The bug originated from Lotus 1-2-3 , where it was deliberately implemented to save computer memory, and was also intentionally implemented in Excel for the purpose of bug compatibility . [ 84 ]
Since 7 October 2024, Python 3.13 is the latest stable release, and it and, for few more months, 3.12 are the only releases with active support including for bug fixes (as opposed to just for security) and Python 3.9, [55] is the oldest supported version of Python (albeit in the 'security support' phase), due to Python 3.8 reaching end-of-life.
When the computer calculates a formula in one cell to update the displayed value of that cell, cell reference(s) in that cell, naming some other cell(s), causes the computer to fetch the value of the named cell(s). A cell on the same "sheet" is usually addressed as: =A1 A cell on a different sheet of the same spreadsheet is usually addressed as:
Year to date, the Dow Jones Industrial Average has risen 19%, while the S&P 500 has gained 26% and the tech-heavy Nasdaq Composite has gained 28%. Click here for in-depth analysis of the latest ...
The doomsday's anchor day calculation is effectively calculating the number of days between any given date in the base year and the same date in the current year, then taking the remainder modulo 7. When both dates come after the leap day (if any), the difference is just 365y + y / 4 (rounded down). But 365 equals 52 × 7 + 1, so after ...