title: Can you create a multi-word symbol in Sympy?
body: <p>In trying to write a a few equation solvers an apparent shortcoming has been discovered in sympy. Errors occur when using multi-word symbols as sympy uses the &quot;Space&quot; for variable separation in addition to the comma. The equation to be replicated is below
  <a href="https://i.stack.imgur.com/kaZEr.png" rel="nofollow noreferrer">design factor equation</a></p>
  <pre><code>design_factor = sympify(sp.symbols('eta1_d'))
  #d_factor = sp.parsing.sympy_parser.parse_expr('design\ factor')
  l_strength = sp.Symbol(&quot;Loss-Of-Function Strength&quot;)
  d_factor = Eq(design_factor, &quot;Loss-Of-Function Strength&quot;)
  
  #designFactorEquation = sp.core.sympify()
  #print(designFactorEquation)
  # print(default_value)
  obj = BytesIO()
  sp.preview(l_strength, viewer='BytesIO', output='png', outputbuffer=obj)
  obj.seek(0)
  img_lbl1 = tk.Label(window2)
  img_lbl1.grid()
  img_lbl1.img = ImageTk.PhotoImage(Image.open(obj))
  img_lbl1.config(image=img_lbl1.img)
  </code></pre>