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The byte-order mark (BOM) is a particular usage of the special Unicode character code, U+FEFF ZERO WIDTH NO-BREAK SPACE, whose appearance as a magic number at the start of a text stream can signal several things to a program reading the text: [1] the byte order, or endianness, of the text stream in the cases of 16-bit and 32-bit encodings;
Python is a high-level, general-purpose programming language. Its design philosophy emphasizes code readability with the use of significant indentation. [33] Python is dynamically type-checked and garbage-collected. It supports multiple programming paradigms, including structured (particularly procedural), object-oriented and functional ...
UTF-8 byte order mark, commonly seen in text files. [28] [29] [30] FF FE: ÿþ: 0 txt others: UTF-16LE byte order mark, commonly seen in text files. [28] [29] [30] FE FF: þÿ: 0 txt others: UTF-16BE byte order mark, commonly seen in text files. [28] [29] [30] FF FE 00 00: ÿþ␀␀ 0 txt others: UTF-32LE byte order mark for text [28] [30] 00 ...
A snippet of Python code with keywords highlighted in bold yellow font. The syntax of the Python programming language is the set of rules that defines how a Python program will be written and interpreted (by both the runtime system and by human readers). The Python language has many similarities to Perl, C, and Java. However, there are some ...
Many standards only support UTF-8, e.g. JSON exchange requires it (without a byte-order mark (BOM)). [30] UTF-8 is also the recommendation from the WHATWG for HTML and DOM specifications, and stating "UTF-8 encoding is the most appropriate encoding for interchange of Unicode " [ 4 ] and the Internet Mail Consortium recommends that all e‑mail ...
For this reason, bit index is not affected by how the value is stored on the device, such as the value's byte order. Rather, it is a property of the numeric value in binary itself. This is often utilized in programming via bit shifting: A value of 1 << n corresponds to the n th bit of a binary integer (with a value of 2 n).
The order of magnitude of data may be specified in strictly standards-conformant units of information and multiples of the bit and byte with decimal scaling, or using historically common usages of a few multiplier prefixes in a binary interpretation which has been common in computing until new binary prefixes were defined in the 1990s..
When Python's codecs module is used to read UTF-8 text in from a file and write UTF-16 text out to another file, and the original UTF-8 file begins with the non-character U+FFFE (encoded as EF BF BE), the non-character is accepted as if it were the byte order mark U+FEFF and the resulting UTF-16 file has the opposite byte order of what was ...