从静态XML文件提取产品名：限制前10条并支持单独调用

Here's how you can modify your code to collect the first 10 product names and access each one via a named attribute like start_tag_5:

First, we'll adjust the function to collect results into a list, limit it to 10 items, then create a custom object to hold each result as an attribute.

# Define the static webpage file path
static_webpage_1 = 'StaticStock/acoustic_guitar.html'

class ProductNameContainer:
    pass

def Find_static_webpage_product_name():
    # Open and read the contents of the file (using with for proper file handling)
    with open(static_webpage_1, encoding="utf8") as file:
        read_xml_code = file.read()
    
    start_tag = '<title><![CDATA['
    end_tag = ']]></title>'
    end_position = 0
    product_names = []
    
    # Collect up to 10 product names
    while len(product_names) < 10:
        starting_position = read_xml_code.find(start_tag, end_position)
        if starting_position == -1:  # No more tags found
            break
        end_position = read_xml_code.find(end_tag, starting_position)
        if end_position == -1:  # Mismatched tags, stop early
            break
        
        # Extract and store the product name
        product_name = read_xml_code[starting_position + len(start_tag) : end_position]
        product_names.append(product_name)
        
        # Update position to search for the next tag
        end_position += len(end_tag)
    
    # Create a container object to hold each product name as a named attribute
    name_container = ProductNameContainer()
    for index, name in enumerate(product_names, start=1):
        setattr(name_container, f'start_tag_{index}', name)
    
    return name_container

# Call the function to retrieve the container of product names
read_xml_code = Find_static_webpage_product_name()

# Example: Print the 5th product name
print(read_xml_code.start_tag_5)

# Optional: Print all collected product names
for i in range(1, len(read_xml_code.__dict__) + 1):
    print(getattr(read_xml_code, f'start_tag_{i}'))

Key Changes Explained: #

• Improved file handling: Using with ensures the file is closed automatically after reading, avoiding resource leaks.
• Result collection: We store product names in a list instead of printing immediately, stopping once we have 10 items or exhaust all results.
• Custom attribute access: The ProductNameContainer class and setattr() let us create named attributes like start_tag_1 to start_tag_10, matching your requested access pattern.
• Returnable container: The function returns the container object, so you can access individual results anywhere after calling the function.

Notes: #

• If there are fewer than 10 product names in the file, only the available ones will be added as attributes (e.g., if there are 7, you can access up to start_tag_7).
• Numbering starts at 1 to align with your example of start_tag_5 for the 5th result.

内容的提问来源于stack exchange，提问作者Tomble