LEFT RIGHT OPEN-HEADED ARROW U+21FF

BlockArrows
CategoryMath Symbol
UTF-80xE2 0x87 0xBF
UTF-160xFF 0xFE 0xFF 0x21
UTF-320xFF 0xFE 0x0 0x0 0xFF 0x21 0x0 0x0
HTML⇿
Pythonu"\u21FF"