python Gtk.Clipboard.get（）gtk3返回值不同

Question

I want to convert Gtk.Clipboard.get() return value to utf-8.

gtk3

from gi.repository import Gtk, Gdk

def main():
    clip = Gtk.Clipboard.get (Gdk.SELECTION_PRIMARY)
    text=clip.wait_for_text ()
    print text
    text=text.encode("utf-8")
    print text 

main()

It works only when selected text keeps only ascii characters, but if there are are some national characters (french/german, etc) I get error from text.encode(..) function : UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 1: ordinal not in range(128)

Have You got idea where is the problem and how to make gtk3 version to work?

This works correct when I use gtk2's gtk.clipboard_get() function:

import gtk

def main():
    clip = gtk.clipboard_get ('PRIMARY')
    text=clip.wait_for_text ()
    print text
    text=text.encode("utf-8")
    print text 
main()

best regards

Answer 1

Just a guess here. The clipboard's wait_for_text() method, according to the documentation, is already supposed to give you UTF-8 encoded strings. It might be that the GTK 3 version is mistakenly returning a str instead of a unicode object. To test this, try adding

print type(text)

to see what kind of object it is.

You can try utext = text.decode('utf8') to get a unicode object.

Answer 2

wait_for_text() does return str type, but this is not mistake: utf-8 strings are represented by str type.

It also came to my mind that this line will always produce an error:

some_Unicode_String_With_Non_Ascii.encode("utf-8").encode("utf-8"),

Thus my gtk3 example behaves correctly. As a conclusion: text.encode("utf-8") operation should be removed.