我想将图像从QImage或Qpixmap类转换为PIL图像。 我发现了这个：Convert PyQt to PIL image
但它似乎在Python3中不起作用。对Pyhton3实现这个方法还是更简单地使用新方法呢？
答案 0 :(得分：1)
根据docs：
StringIO和cStringIO模块消失了。相反，导入io 模块并使用io.StringIO或io.BytesIO来处理文本和数据 分别
因此，解决方案是将// create the Inventory grid
var InventoryWidth = 2;
var InventoryHeight = 4;
var Inventory = new Array(InventoryWidth);
for (var i = 0; i < InventoryWidth; i++) {
Inventory[i] = new Array(InventoryHeight);
}
// set the Items & default quantities
Inventory[0][0] = "Potion";
Inventory[1][0] = 2;
Inventory[0][1] = "Elixir";
Inventory[1][1] = 9;
Inventory[0][2] = "Antidote";
Inventory[1][2] = 5;
Inventory[0][3] = "Ether";
Inventory[1][3] = 1;
// function for sorting items
function Sort2D(array2D, byColumn, ascending) {
// sort, seems I am using the wrong sorting function or my approach is wrong here:
// not sure how to do ASC/DESC as well
array2D.sort(function(a, b)
{
if(a[0] === b[0])
{
var x = a[byColumn].toLowerCase(), y = b[byColumn].toLowerCase();
return x < y ? -1 : x > y ? 1 : 0;
}
return a[0] - b[0];
});
}
// sort all rows by first column: "name", setting to 1 should compare and sort the quantities instead
Sort2D( Inventory, 0, true);
// print grid contents
var output = "";
for(var i = 0; i < InventoryHeight; i++) {
if (i == 0) {
output += " | name | own |";
}
for(var j = 0; j < InventoryWidth; j++) {
if (j == 0) {
output += "\n"+i+"|";
}
output+=Inventory[j][i];
if (j >= Inventory[0].length-1) {
output += "|\n";
} else {
output += ", ";
}
}
}
console.log(output);转换为cStringIO.StringIO。
PyQt5：
io.BytesIOPyQt4的：
import io
from PIL import Image
from PyQt5.QtGui import QImage
from PyQt5.QtCore import QBuffer
img = QImage("image.png")
buffer = QBuffer()
buffer.open(QBuffer.ReadWrite)
img.save(buffer, "PNG")
pil_im = Image.open(io.BytesIO(buffer.data()))
pil_im.show()