Tkinter Treeview grid alignment issue - python-2.7

Question

How can I make the treeview widget stick to the Noth (to the toolbar) when scaling up the application window.
It sticks to the west South and Est, but not the North.
using :
self.tree.grid(row=1,column=0,sticky=N+W+E+S)
I
This is the tree.grid alignment configuration
...
self.vsb = ttk.Scrollbar(master, orient=VERTICAL, command=self.tree.yview)
self.hsb = ttk.Scrollbar(master, orient=HORIZONTAL, command=self.tree.xview)
self.vsb.grid(row=1, column=1, sticky='ns')
self.hsb.grid(row=2, column=0, sticky='ew')
self.tree.configure(yscrollcommand=self.vsb.set)
self.tree.configure(xscrollcommand=self.hsb.set)
self.tree.grid(row=1,column=0,sticky=N+W+E+S)
...
This is the toolbar grid config (in case it causes the issue)
...
self.toolbar = Frame(master, bg="blue")
self.upButton = Button(self.toolbar, text="Up", command=self.doNothing, padx=10, pady=10)
self.upButton.grid(row=0,column=0,sticky=N+W)
self.downButton = Button(self.toolbar, text="Down", command=self.doNothing, padx=10, pady=10)
self.downButton.grid(row=0,column=1, sticky=N+W)
self.insupButton = Button(self.toolbar, text="Insert UP", command=lambda: self.insertUp(self.tree), padx=10, pady=10)
self.insupButton.grid(row=0,column=2, sticky=N+W)
self.insdownButton = Button(self.toolbar, text="Insert Down", command=lambda: self.insertDown(self.tree), padx=10, pady=10)
self.insdownButton.grid(row=0,column=3, sticky=N+W)
self.delbrButton = Button(self.toolbar, text="Delete branch", command=lambda: self.deleteBr(self.tree), padx=10, pady=10)
self.delbrButton.grid(row=0,column=4, sticky=N+W)
self.deltreeButton = Button(self.toolbar, text="Delete entire tree", command=lambda: self.deleteTr(self.tree), padx=10, pady=10)
self.deltreeButton.grid(row=0,column=5, sticky=N+W)
self.searchButton = Button(self.toolbar, text='Search', command=lambda: self.searchTr(self.tree), padx=10, pady=10)
self.searchButton.grid(row=0,column=6, sticky=N+W)
self.calcButton = Button(self.toolbar, text='Calc', command=lambda: self.calcTree(self.tree), padx=10, pady=10)
self.calcButton.grid(row=0,column=7, sticky=N+W)
self.toolbar.grid(row=0,column=0, sticky=N+W)
...
Application at launch:
Observed result: Application scaled up
Observed result: Application scaled down (overlaps with the toolbar)
Desired result: Application scaled up

Answer 1

Your tree is sticking to the north, it's just that the top of the row is further down than you realize. You need to give one or more rows a weight, so that tkinter will allocate extra space to that row (and not to any rows with the default weight of zero).
For example:
master.grid_rowconfigure(1, weight=1)
For a definitive reference to how the grid algorithm works see http://tcl.tk/man/tcl8.5/TkCmd/grid.htm#M32