我正在尝试使用
python-docx
将 wmf 文件插入到 docx 中,这会产生以下回溯。
Traceback (most recent call last):
File "C:/Users/ADMIN/PycharmProjects/ppt-to-word/ppt_reader.py", line 79, in <module>
read_ppt(path, file)
File "C:/Users/ADMIN/PycharmProjects/ppt-to-word/ppt_reader.py", line 73, in read_ppt
write_docx(ppt_data, False)
File "C:/Users/ADMIN/PycharmProjects/ppt-to-word/ppt_reader.py", line 31, in write_docx
document.add_picture(slide_data.get('picture_location'), width=Inches(5.0))
File "C:\Python34\lib\site-packages\docx\document.py", line 72, in add_picture
return run.add_picture(image_path_or_stream, width, height)
File "C:\Python34\lib\site-packages\docx\text\run.py", line 62, in add_picture
inline = self.part.new_pic_inline(image_path_or_stream, width, height)
File "C:\Python34\lib\site-packages\docx\parts\story.py", line 56, in new_pic_inline
rId, image = self.get_or_add_image(image_descriptor)
File "C:\Python34\lib\site-packages\docx\parts\story.py", line 29, in get_or_add_image
image_part = self._package.get_or_add_image_part(image_descriptor)
File "C:\Python34\lib\site-packages\docx\package.py", line 31, in get_or_add_image_part
return self.image_parts.get_or_add_image_part(image_descriptor)
File "C:\Python34\lib\site-packages\docx\package.py", line 74, in get_or_add_image_part
image = Image.from_file(image_descriptor)
File "C:\Python34\lib\site-packages\docx\image\image.py", line 55, in from_file
return cls._from_stream(stream, blob, filename)
File "C:\Python34\lib\site-packages\docx\image\image.py", line 176, in _from_stream
image_header = _ImageHeaderFactory(stream)
File "C:\Python34\lib\site-packages\docx\image\image.py", line 199, in _ImageHeaderFactory
raise UnrecognizedImageError
docx.image.exceptions.UnrecognizedImageError
图像文件为
.wmf
格式。
任何帮助或建议表示赞赏。
python-docx
通过“识别”其独特的标头来识别图像文件的类型。通过这种方式,它可以区分 JPEG 和 PNG、TIFF 等。这比映射文件扩展名更可靠,也比要求用户告诉您类型更方便。这是一种非常常见的方法。
此错误表明
python-docx
未找到它识别的标头。 Windows 图元文件格式 (WMF) 可能会很棘手,专有规范和现场文件样本的变化有很大的余地。
要解决此问题,我建议您使用可以识别的内容来读取文件(我将从 Pillow 开始),并将其“转换”为相同或其他格式,希望在此过程中纠正标头。 首先,我会尝试读取它并将其另存为 WMF(或者可能是 EMF,如果可以的话)。这可能足以达到目的。如果您必须更改为中间格式然后再返回,这可能会造成损失,但也许总比没有好。
ImageMagick 可能是另一个不错的选择,因为它可能比 Pillow 具有更好的覆盖范围。
格式
使用
获取哑剧类型。
哑剧类型 | 添加图片() | |
---|---|---|
图像/jpeg | √ | |
图片/png | √ | |
图像/jpeg | √ | |
√ | ||
图像/gif | √ | |
图像/tiff | √ | |
图像/x-ms-bmp | √ | |
申请/后记 | × | |
应用程序/八位字节流 | × | |
图像/x-图标 | × | |
图像/svg+xml | × | |
图片/x-tga | × | |
应用程序/八位字节流 | × | |
图片/网页 | × |
如何解决
安装
pip install pillow
代码
from pathlib import Path
from PIL import Image
def image_to_jpg(image_path):
path = Path(image_path)
if path.suffix not in {'.jpg', '.png', '.jfif', '.exif', '.gif', '.tiff', '.bmp'}:
jpg_image_path = f'{path.parent / path.stem}_result.jpg'
Image.open(image_path).convert('RGB').save(jpg_image_path)
return jpg_image_path
return image_path
if __name__ == '__main__':
from docx import Document
document = Document()
document.add_picture(image_to_jpg('1.jpg'))
document.add_picture(image_to_jpg('1.webp'))
document.save('test.docx')
B计划
BaseImageHeader
类并通过
from_stream()
添加图像格式来实现 SIGNATURES
方法来修改此库。
缺少文件后缀
from docx import Document
document = Document()
document.add_picture('1')
document.save('test.docx')
它会显示这个
使用这个
from docx import Document
document = Document()
document.add_picture(open('1', mode='rb'))
document.save('test.docx')
结论
import io
from pathlib import Path
import magic
from PIL import Image
def image_to_jpg(image_path_or_stream):
f = io.BytesIO()
if isinstance(image_path_or_stream, str):
path = Path(image_path_or_stream)
if path.suffix in {'.jpg', '.png', '.jfif', '.exif', '.gif', '.tiff', '.bmp'}:
f = open(image_path_or_stream, mode='rb')
else:
Image.open(image_path_or_stream).convert('RGB').save(f, format='JPEG')
else:
buffer = image_path_or_stream.read()
mime_type = magic.from_buffer(buffer, mime=True)
if mime_type in {'image/jpeg', 'image/png', 'image/gif', 'image/tiff', 'image/x-ms-bmp'}:
f = image_path_or_stream
else:
Image.open(io.BytesIO(buffer)).convert('RGB').save(f, format='JPEG')
return f
if __name__ == '__main__':
from docx import Document
document = Document()
document.add_picture(image_to_jpg('1.jpg'))
document.add_picture(image_to_jpg('1.webp'))
document.add_picture(image_to_jpg(open('1.jpg', mode='rb')))
document.add_picture(image_to_jpg(open('1', mode='rb'))) # copy 1.webp and rename it to 1
document.save('test.docx')