小编Elt*_*ooo的帖子

我有一个脚本使用java连接到localhost上的端口10.0中显示X11

但我总是得到这个错误

java.lang.InternalError: Can't connect to X11 window server using 'localhost:10.0' as the value of the DISPLAY variable.
    at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
    at sun.awt.X11GraphicsEnvironment.access$200(X11GraphicsEnvironment.java:62)
    at sun.awt.X11GraphicsEnvironment$1.run(X11GraphicsEnvironment.java:178)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java:142)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:186)
    at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:82)
    at sun.awt.X11.XToolkit.<clinit>(XToolkit.java:112)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:186)
    at java.awt.Toolkit$2.run(Toolkit.java:849)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:841)
    at ij.io.Opener.openJpegOrGif(Opener.java:367)
    at ij.io.Opener.openImage(Opener.java:220)
    at ij.io.Opener.openImage(Opener.java:249)
    at ij.io.Opener.open(Opener.java:116)
    at ij.IJ.open(IJ.java:1112)
    at ij.macro.Functions.open(Functions.java:2006)
    at ij.macro.Functions.doFunction(Functions.java:129)
    at ij.macro.Interpreter.doStatement(Interpreter.java:205)
    at ij.macro.Interpreter.doBlock(Interpreter.java:515)
    at ij.macro.Interpreter.runUserFunction(Interpreter.java:278)
    at ij.macro.Interpreter.getFactor(Interpreter.java:1200)
    at ij.macro.Interpreter.getTerm(Interpreter.java:1162)
    at ij.macro.Interpreter.getExpression(Interpreter.java:1145)
    at ij.macro.Interpreter.getBooleanExpression(Interpreter.java:881)
    at …

我正在尝试使用PIL将照片分成多个部分.

def crop(Path,input,height,width,i,k,x,y,page):
    im = Image.open(input)
    imgwidth = im.size[0]
    imgheight = im.size[1]
    for i in range(0,imgheight-height/2,height-2):
        print i
        for j in range(0,imgwidth-width/2,width-2):
            print j
            box = (j, i, j+width, i+height)
            a = im.crop(box)
            a.save(os.path.join(Path,"PNG","%s" % page,"IMG-%s.png" % k))
            k +=1

但它似乎没有起作用.它会分割照片但不是精确的方式(你可以尝试).

我有一个包含输入和下拉列表的表单:

[...]
<select>
<option></option>
<option>Test User 1</option>
<option>Test User 2</option>
</select>
[...]

我将值传递给Selenium作为字典:

dict = {'user':'Test User 1', [...]}

我使用for循环来执行此操作:

for key in dict.keys():
    inputElement = driver.find_element_by_name(key)
    inputElement.clear()
    inputElement.send_keys(dict[key])

它适用于所有输入,但使用下拉菜单不起作用.但是当我没有循环的情况下它可以工作.例如:

inputElement = driver.find_element_by_name('user')
inputElement.clear()
inputElement.send_keys(dict['user'])

要么

inputElement = driver.find_element_by_name('user')
inputElement.clear()
inputElement.send_keys('Test User 1')

我刚刚遇到了声称被谷歌 2004 年使用的挑战之一

(the first 10-digit prime in e).com 

除此之外，我想接受挑战并用 python 解决它

>>> '%0.52f' % math.exp(1)
'2.71828182845904509079**5598298427**6488423347473144531250'
>>> '%0.52f' % numpy.exp(1)
'2.71828182845904509079**5598298427**6488423347473144531250'

我的程序返回的5598298427是一个素数

上网查了一下，正确答案是7427466391

但是 python 中的 exp 数字不包括上面的数字

import numpy
import math

def prime(a):
    if a == 2: return True
    if a % 2 == 0: return False
    if a < 2: return False
    i = 2
    n = math.sqrt(a) + 1
    while(i < n):
        if a % i == 0:
            return False
        i += 1 …

我试图找出是否继承QtConcurrent并在其中编写run方法将起作用:

class Task(QtCore.QtConcurrent):

     def run(self, function):
           function()

还是完全没用？

我有一个包含许多模块、文件和文件夹的 PySide 项目。我还使用了 Numpy、Matplotlib 和许多其他模块。

我想用 cython 构建这个项目。代码是纯Python，我希望 cython 将所有依赖项添加在一起，就像使用时一样pyinstaller

是否有可能，或者 cython 只是为了编写扩展（dll、so、lib）而设计的？

我试图检查给定的列表是否是另一个列表的子序列:

这里是给出真实的列表的例子:

subseq "" "w"
subseq "w" "w"
subseq "ab" "cab"
subseq "cb" "cab"
subseq "aa" "xaxa"
not (subseq "aa" "xax")
not (subseq "ab" "ba")

我刚刚谈到这个,但在某些情况下,它给出了错误的结果

subseq :: Eq a => [a] -> [a] -> Bool
subseq [] [] = True
subseq [] ys = True
subseq xs [] = False
subseq (x:xs) (y:ys) = x == y || subseq xs ( 1 `drop` ys )

我有一个qtablewidgetitem，里面有一个QCheckbox

当禁用qtablewigetitem如下时

    flags = self.item(row+1, self.columns["USER_ACCESS"]).flags()
    flags |= QtCore.Qt.ItemIsSelectable
    flags |= QtCore.Qt.ItemIsEditable
    flags |= QtCore.Qt.ItemIsEnabled
    self.item(row+1, self.columns["USER_ACCESS"]).setFlags(flags)

它已被禁用，我无法单击它，但它会显示，因为它仍然处于启用状态。

我想将其显示为灰色

更新：

class CheckBoxDelegate(QtGui.QStyledItemDelegate):
    """
    A delegate that places a fully functioning QCheckBox in every
    cell of the column to which it's applied
    """
    def __init__(self, parent):
        QtGui.QStyledItemDelegate.__init__(self, parent)
        self.parent = parent

    def createEditor(self, parent, option, index):
        '''
        Important, otherwise an editor is created if the user clicks in this cell.
        ** Need to hook up a …

我写了一个脚本,它备份到已装载的磁盘/mount/data/,我不想复制该文件夹,同时复制其他人,我不想复制proc,sys也

for dir in `ls /`; do
if [ $dir != "mount" -o $dir != "proc" -o $dir != "sys" ]; then
   sh /home/bin/safecopy $dir
fi
done

但条件被忽略了

$dir != "mount" -o $dir != "proc" -o $dir != "sys"

和safecopy尝试复制mount,proc并sys...为什么？

但是当我这样做的时候

for dir in `ls /`; do
    if [ $dir != "mount" ]; then
    if [ $dir != "proc" ]; then
    if [ $dir != "sys" …