Python实现ppt转pdf代码报错AttributeError: 'POINTER(IUnknown)' object has no attribute 'Presentations'

秦羽 2020-08-01 PM 882℃ 0条

网上找的用Python实现ppt转pdf的代码，但是运行时报错
>AttributeError: 'POINTER(IUnknown)' object has no attribute 'Presentations'

## 原代码
```python
import comtypes.client
import os

def init_powerpoint():
    powerpoint = comtypes.client.CreateObject("Powerpoint.Application")
    powerpoint.Visible = 1
    return powerpoint

def ppt_to_pdf(powerpoint, inputFileName, outputFileName, formatType = 32):
    if outputFileName[-3:] != 'pdf':
        outputFileName = outputFileName + ".pdf"
    deck = powerpoint.Presentations.Open(inputFileName)
    deck.SaveAs(outputFileName, formatType) # formatType = 32 for ppt to pdf
    deck.Close()

def convert_files_in_folder(powerpoint, folder):
    files = os.listdir(folder)
    pptfiles = [f for f in files if f.endswith((".ppt", ".pptx"))]
    for pptfile in pptfiles:
        fullpath = os.path.join(cwd, pptfile)
        ppt_to_pdf(powerpoint, fullpath, fullpath)

if __name__ == "__main__":
    powerpoint = init_powerpoint()
    cwd = os.getcwd()
    convert_files_in_folder(powerpoint, cwd)
    powerpoint.Quit()
```

## 解决方法

增加`dynamic = True`
```
powerpoint = comtypes.client.CreateObject("Powerpoint.Application",dynamic = True)
```

## 完整代码
```python
import comtypes.client
import os

def init_powerpoint():
    powerpoint = comtypes.client.CreateObject("Powerpoint.Application",dynamic = True)
    powerpoint.Visible = 1
    return powerpoint

if __name__ == "__main__":
    powerpoint = init_powerpoint()
    cwd = os.getcwd()
    convert_files_in_folder(powerpoint, cwd)
    powerpoint.Quit()
```

参考：
[https://blog.csdn.net/qq_34069180/article/details/79334956](https://blog.csdn.net/qq_34069180/article/details/79334956?utm_medium=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-1.channel_param&depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-1.channel_param)
[https://stackoverflow.com/questions/42794530/error-pointeriunknown-when-trying-to-access-com-object-properties](https://stackoverflow.com/questions/42794530/error-pointeriunknown-when-trying-to-access-com-object-properties)

标签: ppt2pdf, ppt转pdf

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