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I am trying to encode Bangla words in python using pandas dataframe. But as encoding type, utf-8 is not working but utf-8-sig is. I know utf-8-sig is with BOM(Byte order mark). But why is this called utf-8-sig and how it works?
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UTF-8 is superior in every way to ANSI. There is no reason to choose ANSI over UTF-8 in creating new applications as all computers can decode it.
The UTF-8 BOM is a sequence of bytes at the start of a text stream ( 0xEF, 0xBB, 0xBF ) that allows the reader to more reliably guess a file as being encoded in UTF-8. Normally, the BOM is used to signal the endianness of an encoding, but since endianness is irrelevant to UTF-8, the BOM is unnecessary.
The Difference Between Unicode and UTF-8Unicode is a character set. UTF-8 is encoding. Unicode is a list of characters with unique decimal numbers (code points).
Both UTF-8 and UTF-16 are variable length encodings. However, in UTF-8 a character may occupy a minimum of 8 bits, while in UTF-16 character length starts with 16 bits. Main UTF-8 pros: Basic ASCII characters like digits, Latin characters with no accents, etc.
"sig" in "utf-8-sig" is the abbreviation of "signature" (i.e. signature utf-8 file). Using utf-8-sig to read a file will treat the BOM as metadata that explains how to interpret the file, instead of as part of the file contents.
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