我使用Powerpoint作为网页的用户界面来制作简单的图片。我今天要做的是在ppt中创建幻灯片,然后将每张幻灯片另存为图片,然后我的网络会下载图片并显示出来。我想尽可能地使此过程自动化,以摆脱这种手动保存的方式。
我已经查看了python-pptx包,但是找不到该函数,该函数使我可以将每张幻灯片另存为图片。您能帮我吗?
python-pptx不是此任务的正确工具,因为它根本不与PowerPoint交互(在没有安装PowerPoint版本的情况下,它可以工作)。如果您的系统上安装了PowerPoint,则可以使用例如comtypes模块以从python控制它。如何执行此操作的示例可在python-pptx-interface模块中找到:
from comtypes.client import Constants, CreateObject
# ...
def save_pptx_as_png(png_foldername: str, pptx_filename: str, overwrite_folder: bool = False):
if os.path.isdir(png_foldername) and not overwrite_folder:
print(f"Folder {png_foldername} already exists. "
f"Set overwrite_folder=True, if you want to overwrite folder content.")
return
powerpoint = CreateObject("Powerpoint.Application")
pp_constants = Constants(powerpoint)
pres = powerpoint.Presentations.Open(pptx_filename)
pres.SaveAs(png_foldername, pp_constants.ppSaveAsPNG)
pres.close()
if powerpoint.Presentations.Count == 0: # only close, when no other Presentations are open!
powerpoint.quit()
这应该给您一个想法,如何编写自己的save_as_png函数。
或者您直接使用python-pptx-interface:
from pptx_tools import utils # needs python-pptx-interface installed
# you should use full paths, to make sure PowerPoint can handle the paths
png_folder = ...
pptx_file = ...
utils.save_pptx_as_png(png_folder, pptx_file) # additional optional parameter overwrite_folder