comefrom: <doocs>2390.Removing Stars From a String_1.py
code: def removeStars( s: str) -> str:
      stk = []
      for c in s:
          if c == '*':
              stk.pop()
          else:
              stk.append(c)
      return ''.join(stk)
masked: def sample_funcname ( var_0 : str ) -> str :
      var_2 = [ ]
      for var_3 in var_0 :
          if var_3 == '*' :
              var_2.pop ( )
          else :
              var_2.append ( var_3 )
      return ''.join ( var_2 )
  