Hello @ all,

i am testing out a first Tkinter python program on different OS. On Raspbian ( Stretch ) i run this program under IDLE and IDLE3 and from Geany ( 1.29 ). The code is :
`
#from Tkinter import * # Python 2
from tkinter import * # Python 3

definition of function upper radio button pressed which creates a picture in the window. The picture is in file Rechteck_gelb_mit_Punkt_blau.gif

see definiton of blue_img on the bottom of this script

def upper_radio_button_pressed():
canvas.create_image(20,20, anchor=NW, image=blue_img)

definition of function upper radio button pressed which creates a picture in the window. The picture is in file Rechteck_gelb_mit_Punkt_rot.gif

see definiton of red_img on the bottom of this script

def lower_radio_button_pressed():
canvas.create_image(20,20, anchor=NW, image=red_img)

definition of class App which is handling the Quit and the hello Button

class App:
def init(self, master):
frame = Frame(master)
frame.pack()
self.button = Button(frame,
text="QUIT", fg="red",
command=frame.quit)
self.button.pack(side=LEFT)

self.slogan = Button(frame,
                     text="Hello",
                     command=self.write_slogan)
self.slogan.pack(side=LEFT)

def write_slogan(self): # definition of function write slogan. The text is written in the command line box only if the button Hello is pressed.
print ("Tkinter is easy to use!")

Tkinter window definition

root = Tk()
root.title("First python Tkinter window")

width x height + x_offset + y_offset:

root.geometry("500x600+30+30")

define red label inside the window with text "red Label"

w = Label(root, text="Red Label", bg="red", fg="white")

automatic managing of geometrie ( pack manager )of label w inside of the window

means x coordinate is done automatically and Y coordinate is given ( for x use padx =...)

w.pack(fill=X,pady=10)

integer variable definition

v = IntVar()

entry1 = Entry(root)
entry2 = Entry(root)

definition of Label "Choose a programming language"

Label(root,
text="""Choose a
programming language:""",
justify = LEFT,
padx = 20).pack()

definition of pushable radiobuttons with text Phyton or Perl

Radiobutton(root,
text="Python",
padx = 20,
variable=v,
value=1,
command=upper_radio_button_pressed).pack(anchor=W) # call the function upper_radio_button pressed

Radiobutton(root,
text="Perl",
padx = 20,
variable=v,
value=2,
command=lower_radio_button_pressed).pack(anchor=W)# call the function upper_radio_button pressed

a canvas is a graphical object, here blue_img and red_img

define the dimensions of the pictures inside of the window and that it is shown inside of the window root

canvas_width = 200
canvas_height = 100
canvas = Canvas(root,
width=canvas_width,
height=canvas_height)
canvas.pack()

#definition of picture blue_img
blue_img = PhotoImage(file="/Users/holgerlech/Documents/85_Computer/Python/Quadrat_gelb_mit Smilie.PPM")
#definition of picture red_img
red_img = PhotoImage(file="/Users/holgerlech/Documents/85_Computer/Python/Rechteck_gelb_mit_Punkt_rot.gif")

call of the class App with parameter root for the window

app = App(root)

Label(root,text="Vorname:").pack()
vorname = entry1.pack()

Label(root,text="Nachnahme:").pack()
nachname = entry2.pack()

#start window loop
root.mainloop()

print(vorname)
print(nachname)
`
In IDLE the Tk window was opened but in Geany only a Terminal window with "geany_run_script_93XQp0.sh" appears and that's it, nothing more happens. On Mac OS a script is started too, but then the Tk windows appears. Whats wrong here ?

Thank You very much !

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