Stata StrLs map 8 byte values to strings which are stored using a dictionary-like format where strings are keyed to two values.
Supports creation of the StrL block of a dta file for dta versions 117, 118 and 119. These differ in how the GSO is stored. 118 and 119 store the GSO lookup value as a uint32 and a uint64, while 117 uses two uint32s. 118 and 119 also encode all strings as unicode which is required by the format. 117 uses 'latin-1' a fixed width encoding that extends the 7-bit ascii table with an additional 128 characters.
DataFrame to convert
List of columns names to convert to StrL
dta version. Currently supports 117, 118 and 119
Can be ">", "<", "little", or "big". default is :None:None:`sys.byteorder`
Converter for Stata StrLs
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