prototyping-times/mediawiki-api-download-images.ipynb

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   "cell_type": "markdown",
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   "source": [
    "# Mediawiki API Download Images"
   ]
  },
  {
   "cell_type": "code",
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    "# Let's first test it with one image.\n",
    "# For example: File:Debo 009 05 01.jpg\n",
    "\n",
    "filename = 'Debo 009 05 01.jpg'\n",
    "filename = filename.replace(' ', '_') # let's replace spaces again with _\n",
    "filename = filename.replace('.jpg', '') # and let's remove the file extension"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
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   "outputs": [],
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   "cell_type": "code",
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   "source": [
    "# We cannot ask the API for the URL of a specific image (:///), but we can still find it using the \"aifrom=\" parameter.\n",
    "# Note: ai=allimages\n",
    "url = f'https://pzwiki.wdka.nl/mw-mediadesign/api.php?action=query&list=allimages&aifrom={ filename }&format=json'\n",
    "response = urllib.request.urlopen(url).read()\n",
    "data = json.loads(response)\n",
    "JSON(data)"
   ]
  },
  {
   "cell_type": "code",
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   "cell_type": "code",
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   "source": [
    "# Select the first result [0], let's assume that that is always the right image that we need :)\n",
    "image = data['query']['allimages'][0]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
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  },
  {
   "cell_type": "code",
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   "source": [
    "print(image)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "print(image['url'])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
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   "outputs": [],
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  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Now we can use this URL to download the images!"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "image_url = image['url']\n",
    "image_filename = image['name']\n",
    "image_response = urllib.request.urlopen(image_url).read() # We use urllib for this again, this is basically our tool to download things from the web !"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
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  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
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   "source": [
    "print(image_response)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "out = open(image_filename, 'wb') # 'wb' stands for 'write bytes', we basically ask this file to accept data in byte format\n",
    "out.write(image_response)\n",
    "out.close()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
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  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Download all the images of our page"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "# We have our variable \"images\"\n",
    "print(images)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "# Let's loop through this list and download each image!\n",
    "for filename in images:\n",
    "    print('Downloading:', filename)\n",
    "    \n",
    "    filename = filename.replace(' ', '_') # let's replace spaces again with _\n",
    "    filename = filename.replace('.jpg', '').replace('.gif', '').replace('.png','').replace('.jpeg','').replace('.JPG','').replace('.JPEG','') # and let's remove the file extension\n",
    "    \n",
    "    # first we search for the full URL of the image\n",
    "    url = f'https://pzwiki.wdka.nl/mw-mediadesign/api.php?action=query&list=allimages&aifrom={ filename }&format=json'\n",
    "    response = urllib.request.urlopen(url).read()\n",
    "    data = json.loads(response)\n",
    "    image = data['query']['allimages'][0]\n",
    "    \n",
    "    # then we download the image\n",
    "    image_url = image['url']\n",
    "    image_filename = image['name']\n",
    "    image_response = urllib.request.urlopen(image_url).read()\n",
    "    \n",
    "    # and we save it as a file\n",
    "    out = open(image_filename, 'wb') \n",
    "    out.write(image_response)\n",
    "    out.close()"
   ]
  },
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