[Tkinter] Update variable using tkinter entry methon

[drSlump]

Hallo everyone, I have the following code. The goal is to create a GUI that takes the entry values and update vriables value that I want to use lter in another script that I have already tested. At this stage I am simply printing the values from a button (RUN SIMULATION). It works but I have the following issues:

• when I start the GUI the predefined value in the entry are like .!frame2.!entry
  
• to print the entry value I need to call each dictionary item with the method get() (button RUN SIMULATION). Can I save directly the entry values in the dictianary without the need to use such a method in the button?
  

def create_geometry_input_dictionary(frame, var):
    temp = {'TITLE': ['Min', 'Step', 'Max'],
            'LABEL1': [StringVar(frame, value='25'),
                       StringVar(frame, value=var),
                       StringVar(frame, value=var)],
            'LABEL2': [StringVar(frame, value='19'),
                       StringVar(frame, value=var),
                       StringVar(frame, value=var)],
            'LABEL3': [StringVar(frame, value='0.8'),
                       StringVar(frame, value=var),
                       StringVar(frame, value=var)],
            'LABEL4': [StringVar(frame, value='2'),
                       StringVar(frame, value=var),
                       StringVar(frame, value=var)],
            'LABEL5': [StringVar(frame, value='0.1'),
                       StringVar(frame, value=var),
                       StringVar(frame, value=var)]}
    return temp

def create_fields(frame, fields_dict):
    for ind, key in enumerate(fields_dict):
        lab_temp = Label(frame, text=key)
        lab_temp.grid(row=ind, column=0, sticky=NS, padx=5, pady=5)
        for i, item in enumerate(fields_dict[key]):
            if ind == 0:
                lab_temp = Label(frame, text=item)
                lab_temp.grid(row=ind, column=i + 1, sticky=NS, padx=5, pady=5)
            else:
                val = Entry(frame, textvariable=item, width=15)
                val.grid(row=ind, column=i + 1, sticky="ns", padx=5, pady=5)
                fields_dict[key][i].set(val)

if __name__ == '__main__':
    root = Tk()
    root.title('Model Definition')
    width = 980
    height = 40
    root.geometry('{}x{}'.format(width, 10 * height))

    width_label = 30

    # create all of the main containers
    top_frame = Frame(root, width=width, height=40, pady=3)
    input_frame_left = Frame(root, width=width / 2, height=40, pady=3)
    input_frame_right = Frame(root, width=width / 2, height=40, pady=3)
    frame_file = Frame(root, width=width, height=40, pady=3)  # include file path
    output_frame_left = Frame(root, width=width / 2, height=40, pady=3)
    output_frame_right = Frame(root, width=width / 2, height=40, pady=3)
    button_frame = Frame(root, width=width, height=40, pady=3)

    # place the container within the main window using grid
    top_frame.grid(row=0, columnspan=2, sticky="n")
    input_frame_left.grid(row=1, column=0, sticky="nw")
    input_frame_right.grid(row=1, column=1, sticky="ne")
    frame_file.grid(row=2, columnspan=2, sticky="ns")
    output_frame_left.grid(row=3, column=0, sticky="w")
    output_frame_right.grid(row=3, column=1, sticky="e")
    button_frame.grid(row=4, columnspan=2, sticky="n")

    # create radio button TYPE of ANALYSIS
    label_top_frame = Label(top_frame, text='TYPE OF ANALYSIS', bd=5, anchor=N).grid(row=0, columnspan=2, sticky=N)
    type_analysis = StringVar(value='1')
    Radiobutton(top_frame, text='One-side heating', value='1', variable=type_analysis).grid(row=1, column=0, sticky=N)
    Radiobutton(top_frame, text='Uniform heating', value='2', variable=type_analysis).grid(row=1, column=1, sticky=N)

    lab = Label(input_frame_left, text='GEOMETRY DATA')
    lab.grid(row=0, column=0, sticky=N, padx=5, pady=5)
    lab = Label(input_frame_left, text='Max')
    lab.grid(row=0, column=1, sticky=N, padx=5, pady=5)
    lab = Label(input_frame_left, text='Step')
    lab.grid(row=0, column=2, sticky=N, padx=5, pady=5)
    lab = Label(input_frame_left, text='Min')
    lab.grid(row=0, column=3, sticky=N, padx=5, pady=5)

    dict_input_geometry = create_geometry_input_dictionary(input_frame_left, '0')
    dict_input_water = create_water_input_dictionary(input_frame_right, '0')

    create_fields(input_frame_left, dict_input_geometry)
    create_fields(input_frame_right, dict_input_water)

 input_path = StringVar(value=path_temp)  
    Label(frame_file, text='path').grid(row=0, columnspan=2)
    Label(frame_file, textvariable=input_path).grid(row=1, column=0, sticky='w') #  textvariable=input_path.get() does not work, why?
    Button(frame_file, text='Open file', command=lambda: load_file(input_path)).grid(row=1, column=1)
    Button(frame_file, text='Run simulation', command=lambda: print(dict_input_geometry['LABEL1'][0].get())).grid(row=1, column=2)