如何用Python读取并格式化特定格式文本文件以匹配现有代码

Got it, let's tackle this formatting step by step. You've already got the file content loaded and the # characters handled, so here's how to get the output aligned perfectly with your existing header:

First, let's recap the setup. Assuming you've read the file content into a string (like content = "hammer#9.95 saw#20.15 shovel#35.40"), start by splitting that string into individual item-price pairs:

# Split the content into separate item entries
items = content.split()

Then, use the same string formatting logic as your header to print each line. Your header uses left-aligned (<) for "Item" (width 10) and right-aligned (>) for "Cost" (width 17). We'll mirror that for each item, adding the $ symbol to the cost:

# Your existing header code
print('{0: <10}'.format('Item'), '{0: >17}'.format('Cost'), sep='')

# Loop through each item and format the output
for entry in items:
    # Split each entry into name and cost (works directly with the original # separator)
    item_name, item_cost = entry.split('#')
    # Format and print: left-align name (10 width), right-align cost with $ (17 width)
    print('{0: <10}'.format(item_name), '{0: >17}'.format(f'${item_cost}'), sep='')

Running this will give you exactly the output you want:

Item        Cost
hammer      $9.95
saw         $20.15
shovel      $35.40

A quick note: If you already replaced the # with another separator (like a space) earlier, just adjust the split('#') part to match whatever character you used instead.

内容的提问来源于stack exchange，提问作者MJP