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A term like backward-compatible usually implies object-code compatibility. This means that newer computer hardware and/or software has (practically) every feature of the old, plus additional capabilities or performance. Older executable code will thus run unchanged on the newer product.
The capitulum character is obsolete, being replaced by pilcrow, but is included in Unicode for backward compatibility and historic studies. The pilcrow symbol was included in the default hardware codepage 437 of IBM PCs (and all other 8-bit OEM codepages based on this) at code point 20 (0x14), which is an ASCII control character .
Its 7-bit code is all-bits-on in binary, which essentially erased a character cell on a paper tape when overpunched. Paper tape was a common storage medium when ASCII was developed, with a computing history dating back to WWII code breaking equipment at Biuro Szyfrów. Paper tape became obsolete in the 1970s, so this clever aspect of ASCII ...
Python uses the + operator for string concatenation. Python uses the * operator for duplicating a string a specified number of times. The @ infix operator is intended to be used by libraries such as NumPy for matrix multiplication. [104] [105] The syntax :=, called the "walrus operator", was introduced in Python 3.8. It assigns values to ...
and you can see that b, as visible from the closure's scope, retains the value it had; the changed binding of b inside the inner function did not propagate out. The way around this is to use a nonlocal b statement in bar. In Python 2 (which lacks nonlocal), the usual workaround is to use a mutable value and change that value, not the binding. E ...
Additional plugins, such as an equation editor and spell-checker, are also available. The wiki-pages are stored in a folder structure in plain text files with wiki formatting. Zim can be used with the Getting Things Done method. [7] Zim is written in Python using GTK libraries. It is open source and free software under the GPL-2.0-or-later license.
An animation of the anadrome of wolf and flow.. An anadrome [1] [2] [3] [4] [a] is a word or phrase whose letters can be reversed to spell a different word or phrase ...
Python 2.6 was released to coincide with Python 3.0, and included some features from that release, as well as a "warnings" mode that highlighted the use of features that were removed in Python 3.0. [ 28 ] [ 10 ] Similarly, Python 2.7 coincided with and included features from Python 3.1, [ 29 ] which was released on June 26, 2009.