如何使用python代码找到PDF文件的每个段落的字体大小？

import PyPDF2

def get_font_sizes(pdf_path):
    font_sizes = []
    
    with open(pdf_path, 'rb') as file:
        reader = PyPDF2.PdfFileReader(file)
        num_pages = reader.numPages
        
        for page_num in range(num_pages):
            page = reader.getPage(page_num)
            content = page.extractText()
            
            for obj in page['/Resources']['/Font']:
                font = page['/Resources']['/Font'][obj]
                font_size = font['/FontDescriptor']['/FontBBox'][-1]
                font_sizes.append(font_size)
    
    return font_sizes

pdf_path = 'path/to/your/pdf/file.pdf'
font_sizes = get_font_sizes(pdf_path)
print(font_sizes)