错误：Python 中未定义模块

Curtis Chau

Updated: 2026年4月22日

您可能会遇到如下警告：

"ChromePdfRenderer" 未定义
"PdfCssMediaType" 未定义
"FitToPaperModes" 未定义

以上警告可忽略。由于 IronPDF for Python 利用 IronPDF C#，这些功能是在 .NET 6.0 中实现的。因此，相关的类定义可能无法直接在 Python 环境中查看或定义。

以下是在使用 IronPDF 库时，您可能在 Python 中遇到并处理此类情况的示例。

# Importing the IronPDF module. This is assumed to be a hypothetical Python wrapper for IronPDF C&num; library.
# In practice, you might use a Python package manager to install and import the necessary module.
from ironpdf import ChromePdfRenderer, PdfCssMediaType, FitToPaperModes

# Example function using IronPDF components to illustrate usage
def generate_pdf():
    try:
        # Create a new PDF renderer
        renderer = ChromePdfRenderer()
        
        # Define options or configurations for the renderer
        renderer.css_media_type = PdfCssMediaType.PRINT
        renderer.fit_to_paper_mode = FitToPaperModes.FIT
        
        # Assume we have HTML content to convert to PDF
        html_content = "<h1>Hello, World!</h1>"

        # Render the HTML content to PDF
        pdf_document = renderer.render_html_as_pdf(html_content)

        # Save the PDF document to a file
        pdf_document.save_as("output.pdf")

    except Exception as e:
        # Log and handle any exceptions that occur during PDF generation
        print(f"An error occurred: {e}")

# Execute the function to generate a PDF
generate_pdf()

# Importing the IronPDF module. This is assumed to be a hypothetical Python wrapper for IronPDF C&num; library.
# In practice, you might use a Python package manager to install and import the necessary module.
from ironpdf import ChromePdfRenderer, PdfCssMediaType, FitToPaperModes

# Example function using IronPDF components to illustrate usage
def generate_pdf():
    try:
        # Create a new PDF renderer
        renderer = ChromePdfRenderer()
        
        # Define options or configurations for the renderer
        renderer.css_media_type = PdfCssMediaType.PRINT
        renderer.fit_to_paper_mode = FitToPaperModes.FIT
        
        # Assume we have HTML content to convert to PDF
        html_content = "<h1>Hello, World!</h1>"

        # Render the HTML content to PDF
        pdf_document = renderer.render_html_as_pdf(html_content)

        # Save the PDF document to a file
        pdf_document.save_as("output.pdf")

    except Exception as e:
        # Log and handle any exceptions that occur during PDF generation
        print(f"An error occurred: {e}")

# Execute the function to generate a PDF
generate_pdf()

Python