python - Tkinter Scale and floats when resolution > 1 -


how can float values scale when resolution above 1? if set resolution below 1, example 0.9, scale give floats. above 1, , can integers.

example code:

from tkinter import *  root = tk()  var = doublevar() scale = scale(root, variable=var, resolution=3.4) scale.pack()  label = label(root, textvariable=var) label.pack()  root.mainloop()

i'm using python 3.4.1 64-bit on windows 7.

troubles scale() widget mvc visual-part

doublevar() not allow control ui presentation ( visual-part ) of scale() ( depth of decimal places ), while model-part remains correct ( though hidden, might inspected via ascaleinstance.get() ).

a workaround mock-up:

from tkinter import *                     # python 3+  root = tk() varastxt = stringvar()                    # mvc-trick indirect value-holder ascale = scale( root,                 variable   = varastxt,    # mvc-model-part value holder                 from_      = -10.0,       # mvc-model-part value-min-limit                         =  10.0,       # mvc-model-part value-max-limit                 length     = 600,         # mvc-visual-part layout geometry [px]                 digits     =   4,         # mvc-visual-part presentation trick                 resolution =   0.23       # mvc-controller-part stepping                 ) ascale.pack() root.lift()

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