Chapter 6, Page 71 (ePub)

The text reads:

“The next method you will need to update is update_equation():

.. code-block:: python

 1 def update\_equation(self, text):
 2     operators = \['/', '\*', '-', '+'\]
 3     current\_equation = self.solution.GetValue()
 4 
 5     if text not in operators:
 6         if self.last\_button\_pressed in operators:
 7             self.solution.SetValue(current\_equation + ' ' + text)
 8         elif self.empty and current\_equation:
 9             \# The solution is not empty
10             self.empty = False
11         else:
12             self.solution.SetValue(current\_equation + text)
13     elif text in operators and current\_equation is not '' \\
14          and self.last\_button\_pressed not in operators:
15         self.solution.SetValue(current\_equation + ' ' + text)
16 
17     self.last\_button\_pressed = text
18     self.solution.SetInsertionPoint(-1)
19 
20     for item in operators:
21         if item in self.solution.GetValue():
22             self.update\_solution()
23             break
”

which does not match the code in the repo. Also note the backslashes in front of all of the special characters that need to be removed. :-)

driscollis / applications_with_wxpython

Chapter 6, Page 71 (ePub) #5