Tkinter look (theme) in Linux

All available themes of ttk can be seen with such commands:

$ python
>>> import ttk
>>> s=ttk.Style()
>>> s.theme_names()
('clam', 'alt', 'default', 'classic')

So you can use 'clam', 'alt', 'default', 'classic' themes with your version of Tkinter.

After trying all of them I think the best one is 'clam'. You can use this one or any other in following way:

from Tkinter import *
from ttk import *

class App():
  def __init__(self, master):
    frame = Frame(master)
    frame.pack()

    master.title("Just my example")
    self.label = Label(frame, text="Type very long text:")

    self.entry = Entry(frame)

    self.button = Button(frame,
                         text="Quit", width=15,
                         command=frame.quit)


    self.slogan = Button(frame,
                         text="Hello", width=15,
                         command=self.write_slogan)

    self.label.grid(row=0, column=0)
    self.entry.grid(row=0, column=1)
    self.slogan.grid(row=1, column=0, sticky='e')
    self.button.grid(row=1, column=1, sticky='e')

  def write_slogan(self):
    print "Tkinter is easy to use!"

root = Tk()
root.style = Style()
#('clam', 'alt', 'default', 'classic')
root.style.theme_use("clam")

app = App(root)
root.mainloop()

Result:

OS X uses precompiled theme "aqua" so widgets are looking better.

Also Ttk widgets do not support all option which pure Tkinter does.

To use ttk you have to import it.

from tkinter import *
from tkinter import ttk

After that you should use tkinter widgets like this-label=ttk.Label() or button = ttk.Button()