小编Cri*_*spy的帖子

我想要做的是设置if语句来检查一个checkbuttons值是打开还是关闭

我在想的是这样的

from Tkinter import *

def checkbutton_value():
    #If statement here
    #is their something like 

    #if checkbox_1.onvalue == True:
    #   checkbox_2.deselect()

    #if checkbox_1.varible == checkbox_1.onvalue:
    #   checkbox_2.deselect()

    print 'Need Help on lines 7-8 or 10-11'

root=Tk()

checkbox_1 = Checkbutton(root, text='1   ', command=checkbutton_value).pack()
checkbox_2 = Checkbutton(root, text='2   ', command=checkbutton_value).pack()

checkbox_3 = Checkbutton(root, text='QUIT', command=quit).pack()

root.mainloop()

我以为我发现要通过清除它来排序字典,然后按照我想要的顺序重新组装它,但由于某种原因它按照它开始的方式重新排序.

这是代码,如果有人可以帮助我

from operator import itemgetter

n = {}
d = {
 'a': ['2', 'ova', 'no'], 
 'b': ['23', 'movie', 'yes'], 
 'c': ['5', 'show', 'yes'], 
 'd': ['17', 'ova', 'yes'], 
 'e': ['1', 'movie', 'no']
}

for i in d:
    print i, d[i]

print '\n'

l = d.items()
l.sort(key=itemgetter(1)) #l is now sorted by the value of the string holding the integers
d.clear()

for i in l:
    print i[0], i[1]
    d[i[0]] = i[1] 

print '\n'

for i in d:
    print i, d[i] #Why …

Tkinter 中有没有办法编辑标题栏？诸如背景颜色前景色、标题栏大小等选项。这是我正在处理的一个类的代码，我正在寻找使标题栏与框架匹配的方法。

#CreateFile
from Tkinter import *

class CreateFile(Tk):
    def __init__(self, model):
        self.model=model
        myfont = ("Arial", 11, "bold")
        Tk.__init__(self)
        self.title('Create New File')

        self.resizable(0,0)
        frame = Frame(self,bg='black')
        self.lbl=Label(frame,text='Name: ',bg='black',fg='yellow')
        self.lbl.grid(row=0,column=0)
        self.file_entry=Entry(frame,width=30,font=myfont,bg='black',fg='yellow')
        self.file_entry.bind('<Control-a>',self.select_all)
        self.file_entry.grid(row=0,column=1)
        self.create_btn=Button(frame,text='Create',bg='black',fg='yellow')
        self.create_btn.grid(row=0,column=2,padx=10)    
        frame.grid()
        self.mainloop()

    def select_all(self,event):
        print 'd'

model=None
createFile = CreateFile(model)

有人可以解释按位，二进制 AND 运算符（ & ）的目的以及如何使用它？我正在研究创建isprime函数的不同方法并遇到了这个问题。

def isprime(n):
    # make sure n is a positive integer
    n = abs(int(n))
    # 0 and 1 are not primes
    if n < 2:
        return False
    # 2 is the only even prime number
    if n == 2: 
        return True    
    # all other even numbers are not primes
    if not n & 1: 
        return False
    # range starts with 3 and only needs to go up the squareroot of n
    # for all …

I'm making a news board that fades the news in and out. When the element fades out the content gets deleted, when it fades back in there is new content in its place. This works, just the timing is off. The new content that should only appear when the old content has faded away, appears as the element is fading. Is there a way to wait until this is done?

$(document).ready(function() {
    var counter = 0;
    var slides = ['<p>Track …

我在悬停时切换一个元素上的类,该类添加得很好,但margin-top似乎只是被忽略了.如何使margin-top样式正常工作？我的代码在这里@ jsfiddle.代码只是一个片段.

CSS:

#nav ul {
    display: inline;
    list-style: none;
}
#nav li {
    float:left;
    width:100px;
    height:100px;
    margin-top:0px;
    margin-right:50px;
}
.hover {
    background-color: red;
    margin-top: 100px;
}

jQuery的:

$('#nav ul a li').hover(function () {
    $(this).toggleClass('hover');
});

HTML:

<div id="nav">
    <ul>    <a href="">
                <li>

                    <h3>title</h3>
                    <p>description.</p>
                </li>
            </a>
    <a href="">
                <li>
                    <h3>title</h3>
                    <p>description.</p>
                </li>
            </a>
    <a href="">
                <li>
                    <h3>title</h3>
                    <p>description.</p>
                </li>
            </a>

    </ul>
</div>