小编Tis*_*ch 的帖子

我一直在使用此代码来复制多个范围和图表。然而，随着我的代码的增长，它似乎失败了，在搜索了这个问题后，我认为这是由于图表/范围没有正确复制到剪贴板缓存/从剪贴板缓存复制而来。有没有办法避免这个错误？

错误 - “运行时错误'-2147188160（80048248）'：Shapes.PasteSpecial：无效请求。剪贴板为空或包含可能无法粘贴到此处的数据”

Public Sub CopyPasteHeadcountTopGraph()
    If PPT Is Nothing Then Exit Sub
    If PPT_pres Is Nothing Then Exit Sub

    Dim rng As Range
    Dim mySlide As Object
    Dim myShape As Object
    Dim cht As Chart

    Set mySlide = PPT_pres.Slides(6)

    With mySlide
    .Select
    Set cht = ThisWorkbook.Worksheets("Headcount").ChartObjects("HcChart").Chart

       cht.CopyPicture Appearance:=xlScreen, Format:=xlPicture, Size:=xlScreen
       .Shapes.Paste.Select 'ERROR HERE

        '''''''''''''''''''''''''''''''''
        'Paste as Chart and break link. '
        '''''''''''''''''''''''''''''''''
        'cht.ChartArea.Copy
        '.Shapes.Paste.Select


    'With .Shapes("HcChart")
        '.LinkFormat.BreakLink
    'End With

        PPT_pres.Windows(1).Selection.ShapeRange.Left = 35
        PPT_pres.Windows(1).Selection.ShapeRange.Top = 110
        PPT_pres.Windows(1).Selection.ShapeRange.Width = 655 …

我目前正在从一组图像中读取 BGR 值，

我使用了各种 imread 标志，但我似乎无法将其拉为 BGRA。

我当前的代码是

import cv2
import os

#returns an list of images, list of x, list of y, list of BGR
def load_images_from_folder(folder):
    images = []
    for filename in os.listdir(folder):
        img = cv2.imread(os.path.join(folder,filename),flags=cv2.IMREAD_UNCHANGED)
        if img is not None:
            images.append(img)
    return images

这返回了array([245, 247, 255], dtype=uint8)我期待的地方array([245, 247, 255, 0.2], dtype=uint8)