Sc 107/default extention file selection

What's new:

• Automatically goes to the correct dir, depending if you look for shadows or source files!
• Has .csv as default instead of .txt
• Added .TextGrid as option
• Title of file selection window dependent on whether you look for source or shadow files
• File selection function has no code duplication anymore
• Layout of code in some other files is fixed to meet PEP standards

mvc/view.py

@@ -41,18 +41,20 @@ class ViewClass:
         self.tf2_label.grid(column=2, row=2, padx=15, pady=10)
 
         # Buttons (clicky bois)
-        self.button_source = Button(self.tf1_label, text="Select source file...",
-                                    width=17)
+        self.button_source = Button(self.tf1_label,
+                                    text="Select source file...", width=17)
         self.button_source.grid(column=1, row=5, padx=5, pady=10)
 
-        self.button_delete_source = Button(self.tf1_label, text="Delete source", width=17)
+        self.button_delete_source = Button(self.tf1_label, text="Delete source"
+                                           , width=17)
         self.button_delete_source.grid(column=1, row=6, padx=5, pady=10)
 
-        self.button_shadow = Button(self.tf2_label, text="Select shadowed file...",
-                                    width=17)
+        self.button_shadow = Button(self.tf2_label,
+                                    text="Select shadowed file...", width=17)
         self.button_shadow.grid(column=2, row=5, padx=5, pady=10)
 
-        self.button_delete_shadow = Button(self.tf2_label, text="Delete shadow", width=17)
+        self.button_delete_shadow = Button(self.tf2_label, text="Delete shadow"
+                                           , width=17)
         self.button_delete_shadow.grid(column=2, row=6, padx=5, pady=10)
 
         self.comparison_button = Button(self.frame, text="Compare")
@@ -62,13 +64,15 @@ class ViewClass:
         self.save_button.grid(column=2, row=4, padx=40)
 
         # Combobox for file selection
-        self.filebox_1 = ttk.Combobox(self.tf1_label, textvariable=self.curr_source,
-                                      postcommand=self.get_sources, state="readonly",
-                                      width=20)
+        self.filebox_1 = ttk.Combobox(self.tf1_label,
+                                      textvariable=self.curr_source,
+                                      postcommand=self.get_sources,
+                                      state="readonly", width=20)
         self.filebox_1.grid(column=1, row=2, sticky=W, padx=10, pady=10)
-        self.filebox_2 = ttk.Combobox(self.tf2_label, textvariable=self.curr_shadow,
-                                      postcommand=self.get_shadows, state="readonly",
-                                      width=20)
+        self.filebox_2 = ttk.Combobox(self.tf2_label,
+                                      textvariable=self.curr_shadow,
+                                      postcommand=self.get_shadows,
+                                      state="readonly", width=20)
         self.filebox_2.grid(column=2, row=2, sticky=W, padx=10, pady=10)
 
         # Message label
@@ -91,7 +95,7 @@ class ViewClass:
         self.window.mainloop()
 
     def add_file_entry(self, entry, type_code):
-        """"Adds a file name to the combobox values displaying the file options.
+        """Adds a file name to the combobox values displaying the file options.
         When a new file is added, it displays the last selected one.
         Type code optionsL 'source' & 'shadow'.
         """
@@ -105,8 +109,8 @@ class ViewClass:
             self.curr_shadow.set(self.filebox_2['values'][-1])
 
     def remove_file_entry(self, entry, type_code):
-        """"Removes a file name to the combobox values displaying the file options.
-        When a new file is added, it displays the last selected one.
+        """Removes a file name from the combobox values displaying the file
+        options. When a new file is added, it displays the last selected one.
         Type code optionsL 'source' & 'shadow'.
         """
         if type_code == "source":