B]'assertupretty(c) == u('[A,B]')assertlatex(c) ==r'\left[A,B\right]'sT(c,"Commutator(Operator(Symbol('A')),Operator(Symbol('B')))")assertstr(c_tall) =='[A**2,B]'ascii_str = \"""\
Roman numerals are represented by seven different symbols: I, V, X, L, C, D and M. SymbolValue 不想花太多时间编辑,具体表格数据请转向: https://www.emperinter.info/2020/09/12/integer-to-roman/ For e…