{"id":15427,"date":"2022-10-11T13:57:00","date_gmt":"2022-10-11T08:27:00","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-how-to-amend-e-g-add-remove-the-values-of-a-ttk-treeview-tag-tkinter\/"},"modified":"2022-10-11T13:57:00","modified_gmt":"2022-10-11T08:27:00","slug":"solved-how-to-amend-e-g-add-remove-the-values-of-a-ttk-treeview-tag-tkinter","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-how-to-amend-e-g-add-remove-the-values-of-a-ttk-treeview-tag-tkinter\/","title":{"rendered":"[Solved] How to amend (e.g. add\/remove) the values of a ttk.Treeview tag (tkinter)?"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-70047143\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"70047143\" data-parentid=\"70002571\" data-score=\"-1\" data-position-on-page=\"2\" data-highest-scored=\"0\" data-question-has-accepted-highest-score=\"0\" itemprop=\"suggestedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<p>According to the <a rel=\"nofollow noopener\" target=\"_blank\" href=\"http:\/\/www.tcl-lang.org\/man\/tcl8.6\/TkCmd\/ttk_treeview.htm#M59\">tcl documentation<\/a>, a <code>ttk.Treeview<\/code> widget does have commands to add and remove a tag from a node or a list of nodes. However, these methods are not provided in the official tkinter wrapper; see the <code>Treeview<\/code> class in \/usr\/lib\/python3.8\/tkinter\/ttk.py.<\/p>\n<p>Building on the comment by @JasonYang and answer by @CoolCloud, the test code below illustrates how to implement a wrapper to access the <code>tag add<\/code> and <code>tag remove<\/code> commands of the <code>ttk.Treeview<\/code> widget. Hopes this example can benefit tkinter users.<\/p>\n<p><strong>Test Code:<\/strong>  Please see the section on <code># Methods to add and remove tag(s)<\/code>. For an explanation on why the <code>._w<\/code> attribute of a widget is used, please read this question.<\/p>\n<pre><code>#!\/usr\/bin\/python3\n# -*- coding: utf-8 -*-\n\nimport tkinter as tk\nimport tkinter.ttk as ttk\n\n\nclass App(ttk.Frame):\n\n    def __init__(self, parent=None, *args, **kwargs):\n        super().__init__(parent)\n        self.parent = parent\n        self._create_treeview()\n        self._test_tag_add_method()\n        self._test_tag_remove_method()\n\n    def _create_treeview(self):\n        # Create Treeview\n        self.tree = ttk.Treeview(self, column=('A', 'B'), selectmode=\"none\",\n                                 height=7)\n        self.tree.grid(row=0, column=0, sticky='nsew')\n\n        # Setup column heading\n        self.tree.heading('#0', text=\"Point\", anchor=\"center\")\n        self.tree.heading('#1', text=\"x\", anchor=\"center\")\n        self.tree.heading('#2', text=\"y\", anchor=\"center\")\n        # #0, #01, #02 denotes the 0, 1st, 2nd columns\n\n        # Setup column\n        self.tree.column('#0', anchor=\"center\", width=50)\n        self.tree.column('#1', anchor=\"center\", width=30)\n        self.tree.column('#2', anchor=\"center\", width=30)\n\n        # Insert nodes\n        data = [(10, 20), (30, 40), (50, 60)]\n        for n, d in enumerate(data):\n            self.tree.insert('', 'end', iid='n'+str(n), text=str(n), value=d,\n                             tag='Current')\n        node=\"n5 xxx\"\n        self.tree.insert('', 'end', iid=node, text=node, value=d, tag='Current')\n        print(f\"Nodes with 'Current' tag: {self.tree.tag_has('Current')}\")\n\n    def _test_tag_add_method(self):\n        # Add 'House' to tag of node 'n1'\n        tag = 'House'\n        self.tag_add(tag, items=\"n1\")  # works but incorrect type for items\n        print(f\"Nodes with 'House' tag: {self.tree.tag_has(tag)}\")\n        self.tag_add(tag, items=['n5 xxx'])  # Correct way of submitting items\n        print(f\"Nodes with 'House' tag: {self.tree.tag_has(tag)}\")\n\n        # Add 'NEWTAG' to tag of all nodes\n        tag = 'NEWTAG'\n        self.tag_add(tag, items=self.tree.get_children())\n        print(f\"Nodes with 'NEWTAG' tag: {self.tree.tag_has(tag)}\")\n\n    def _test_tag_remove_method(self):\n        # Remove 'House' to tag of node 'n1'\n        tag = 'House'\n        self.tag_remove(tag, items=\"n1\")  # works but incorrect type for items\n        print(f\"Nodes with 'House' tag: {self.tree.tag_has(tag)}\")\n        self.tag_remove(tag, items=['n5 xxx'])  # Correct way of submitting items\n        print(f\"Nodes with 'House' tag: {self.tree.tag_has(tag)}\")\n\n        # Add 'NEWTAG' to tag of all nodes\n        tag = 'NEWTAG'\n        self.tag_remove(tag, items=self.tree.get_children())\n        print(f\"Nodes with 'NEWTAG' tag: {self.tree.tag_has(tag)}\")\n\n    ###########################################################################\n    # Methods to add and remove tag(s)\n    ###########################################################################\n    def tag_add(self, tag, items=None):\n        '''Adds the specified tag to each of the listed items. If tag is\n        already present for a particular item, then the tags for that item are\n        unchanged. Note: items refers to the iid of the tree nodes and must be\n        a list object.\n        '''\n        if items is None:\n            self.tk.call(self.tree._w, 'tag', 'add', tag)\n        else:\n            self.tk.call(self.tree._w, 'tag', 'add', tag, items)\n\n    def tag_remove(self, tag, items=None):\n        '''Removes the specified tag from each of the listed items. If items is\n        omitted, removes tag from each item in the tree. If tag is not present\n        for a particular item, then the tags for that item are unchanged.\n        Note: items refers to the iid of the tree nodes and must be a list\n        object.\n        '''\n        if items is None:\n            self.tk.call(self.tree._w, 'tag', 'remove', tag)\n        else:\n            self.tk.call(self.tree._w, 'tag', 'remove', tag, items)\n    ###########################################################################\n\n\nif __name__ == '__main__':\n    root = tk.Tk()\n    app = App(root)\n    app.grid(row=0, column=0, sticky='nsew')\n    root.rowconfigure(0, weight=1)\n    root.columnconfigure(0, weight=1)\n    root.mainloop()\n<\/code><\/pre>\n<p><strong>Remark:<\/strong> In both <code>tag add<\/code> and <code>tag remove<\/code> methods, the <code>items<\/code> argument must be a list object and not a string object. The element of the <code>items<\/code> argument must be a string object. In the event a string object with white space is passed in as <code>items<\/code>, a _tkinter.TclError would occur.<\/p>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\"><\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved How to amend (e.g. add\/remove) the values of a ttk.Treeview tag (tkinter)? <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] According to the tcl documentation, a ttk.Treeview widget does have commands to add and remove a tag from a node or a list of nodes. However, these methods are not provided in the official tkinter wrapper; see the Treeview class in \/usr\/lib\/python3.8\/tkinter\/ttk.py. Building on the comment by @JasonYang and answer by @CoolCloud, the test &#8230; <a title=\"[Solved] How to amend (e.g. add\/remove) the values of a ttk.Treeview tag (tkinter)?\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-how-to-amend-e-g-add-remove-the-values-of-a-ttk-treeview-tag-tkinter\/\" aria-label=\"More on [Solved] How to amend (e.g. add\/remove) the values of a ttk.Treeview tag (tkinter)?\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[349,482,768,3225],"class_list":["post-15427","post","type-post","status-publish","format-standard","hentry","category-solved","tag-python","tag-python-3-x","tag-tkinter","tag-treeview"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] How to amend (e.g. add\/remove) the values of a ttk.Treeview tag (tkinter)? - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-how-to-amend-e-g-add-remove-the-values-of-a-ttk-treeview-tag-tkinter\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] How to amend (e.g. add\/remove) the values of a ttk.Treeview tag (tkinter)? - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] According to the tcl documentation, a ttk.Treeview widget does have commands to add and remove a tag from a node or a list of nodes. 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