魔杖Python，剩下Image Magick文件

Question

我的Python脚本将图像中的PDF文件转换为可在PyTesseract中使用：

def images(inputFile):
    pdfFile = wi(filename = inputFile, resolution=600)

    formato = 'png'
    image = pdfFile.convert(formato)

    pag = 0
    dfs = []

    for img in image.sequence:
        pag += 1
        img.rotate(90)

        # HOCR
        with img[1100:4190, 1150:3080] as cropped: #[left:right, top:bottom]
            imgPage = wi(image = cropped)
            imageBlob = imgPage.make_blob(formato)
            horas = gerarHocr(imageBlob)

def gerarHocr(imageBlob):
    image = Image.open(io.BytesIO(imageBlob))
    markup = pytesseract.image_to_pdf_or_hocr(image, lang='por', extension='hocr')
    soup = BeautifulSoup(markup, features='html.parser')

    spans = soup.find_all('span', {'class' : 'ocrx_word'})

    listHoras = []

    for sp in spans:
        hora = horaMarcada(sp.get('title').split()[1], sp.get('title').split()[2], sp.get('title').split()[3], sp.get('title').split()[4], sp.get_text().split()[0])
        listHoras.append(hora)

    return listHoras

images('foo.pdf')

执行后，我在temp文件夹中有大量Magick文件，而Python并未自动删除这些文件。

我尝试了多种解决方案来阻止Wand生成这些文件：

我将 policy.xml 中的<!-- <policy domain="resource" name="disk" value="16EB"/> -->更改为

name="disk" value="1GiB"

<policymap>
  <!-- <policy domain="resource" name="temporary-path" value="/tmp"/> -->
  <!-- <policy domain="resource" name="memory" value="2GiB"/> -->
  <!-- <policy domain="resource" name="map" value="4GiB"/> -->
  <!-- <policy domain="resource" name="width" value="10MP"/> -->
  <!-- <policy domain="resource" name="height" value="10MP"/> -->
  <!-- <policy domain="resource" name="area" value="1GB"/> -->
  <!-- <policy domain="resource" name="disk" value="1GiB"/> -->
  <!-- <policy domain="resource" name="file" value="768"/> -->
  <!-- <policy domain="resource" name="thread" value="4"/> -->
  <!-- <policy domain="resource" name="throttle" value="0"/> -->
  <!-- <policy domain="resource" name="time" value="3600"/> -->
  <!-- <policy domain="system" name="precision" value="6"/> -->
  <!-- <policy domain="coder" rights="none" pattern="MVG" /> -->
  <!-- <policy domain="delegate" rights="none" pattern="HTTPS" /> -->
  <!-- <policy domain="path" rights="none" pattern="@*" /> -->
  <policy domain="cache" name="shared-secret" value="passphrase" stealth="true"/>
</policymap>

但是没有用。