Tkinter - Add Data From Nested List With Dictionary To Treeview

I am trying to put some data in my treeview and I'm new to the treeview and do'sent understand it fully, if tried to read the documentation, but got even more confused. I created

Solution 1:

Question: add data from nested list with dictionary to treeview

# Set 'text' to the first column heading
tree.heading('#0', text='Name')

# Insert Tree Heading as Item 'dirIso'
# Set 'text' to "Isolering"
tree.insert("", 1, "dirIso", text="Isolering")

# Loop first list
for n, dirIso in enumerate(isolering,1):
    # Make a list of values from the list of Dictionaries
    list_of_column_values = 
        [list(_dict.values())[0] for _dict in dirIso]

    # Insert the list of values
    # First value goes to Treeview 'text'
    # All other values into the following Columns
    tree.insert('dirIso', n, text=list_of_column_values[0], 
                             values=list_of_column_values[1:])

Tested with Python: 3.5