Question

我无法获得一个条目值并使其成为我的其余代码的可用变量，这部分只能创建一个变量z，但它最终为空，这是我尝试不同的方法没有好结果。

entry.get()什么都不返回，我需要它返回一个字符串。

from Tkinter import *

class Application(Frame):
    def __init__(self, master=None):
        Frame.__init__(self,master)
        self.grid()
        self.initialize()        

    def initialize(self):

        self.btn1 = Button(self, text = 'Ok', command=retrieve_input)
        self.btn1.grid()


def retrieve_input():
    print 'Input value => %s' %entry.get()     

root = Tk()
root.title('Teste')
root.geometry('200x100')
entry = Entry(root)
entry.grid(column=0,row=0)


entry.focus()                                    
entry.bind('<Return>', (lambda event: retrieve_input()))  
z=entry.get()

app = Application(root)
root.mainloop()

Answer 1

您需要致电：

z = entry.get()

每当希望z成为entry中的内容时

。与替换retrieve_input时一样：

def retrieve_input(): global z z = entry.get() print 'Input value => %s' %z

例如。

Answer 2

如果您想添加一个名称与try: # In order to be able to import tkinter for import tkinter as tk # either in python 2 or in python 3 except ImportError: import Tkinter as tk def add_variable(): global variables, entry variables[entry.get()] = None print(variables) if __name__ == '__main__': root = tk.Tk() variables = dict() entry = tk.Entry(root) button = tk.Button(root, text="Add variable...", command=add_variable) entry.pack() button.pack() root.mainloop()中所写内容一样的变量，您可以填写import UIKit class ViewController: UIViewController, UISearchControllerDelegate { var controladorDeBusca: UISearchController! var resultsTableViewController: ResultsTableViewController? override func viewDidLoad() { super.viewDidLoad() resultsTableViewController = storyboard!.instantiateViewController(withIdentifier: "resultsTableViewController") as? ResultsTableViewController configurarControladorDeBusca() } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } func configurarControladorDeBusca() { controladorDeBusca = UISearchController(searchResultsController: resultsTableViewController) controladorDeBusca.delegate = self controladorDeBusca.searchResultsUpdater = resultsTableViewController controladorDeBusca.dimsBackgroundDuringPresentation = true definesPresentationContext = true controladorDeBusca.loadViewIfNeeded() //Configura a barra do Controlador de busca controladorDeBusca.searchBar.delegate = resultsTableViewController controladorDeBusca.hidesNavigationBarDuringPresentation = false controladorDeBusca.searchBar.placeholder = "Search place" controladorDeBusca.searchBar.sizeToFit() controladorDeBusca.searchBar.barTintColor = navigationController?.navigationBar.barTintColor controladorDeBusca.searchBar.tintColor = self.view.tintColor //Adiciona a barra do Controlador de Busca a barra do navegador navigationItem.titleView = controladorDeBusca.searchBar } }字典，如下面的代码所示：

import UIKit

class ResultsTableViewController: UITableViewController, UISearchResultsUpdating, UISearchBarDelegate {

    var array = ["Brazil", "Bolivia", "United States", "Canada", "England", "Germany", "France", "Portugal"]

    var arrayFilter = [String]()

    override func viewDidLoad() {
        super.viewDidLoad()


    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()

    }

    // MARK: - Table view data source

    override func numberOfSections(in tableView: UITableView) -> Int {
        // #warning Incomplete implementation, return the number of sections
        return 1
    }

    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        // #warning Incomplete implementation, return the number of rows
        return arrayFilter.count
    }

    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "searchCell", for: indexPath)

        cell.textLabel?.text = arrayFilter[indexPath.row]

        return cell
    }


    func updateSearchResults(for searchController: UISearchController) {


    }

    func searchBarSearchButtonClicked(_ searchBar: UISearchBar) {

        arrayFilter.removeAll()

        if let text = searchBar.text {
            for string in array {
                if string.contains(text) {
                    arrayFilter.append(string)
                }
            }
        }

        tableView.reloadData()
    }

    func searchBarCancelButtonClicked(_ searchBar: UISearchBar) {

        arrayFilter.removeAll()
        tableView.reloadData()
    }

    func searchBarShouldBeginEditing(_ searchBar: UISearchBar) -> Bool {

        arrayFilter.removeAll()
        tableView.reloadData()

        return true
    }
}

将Tkinter条目转换为变量

2 个答案: