未验证：字符串解析为字典的九种方法/

我是说直接把字典里的内容变成字符串
然后解析这个字符串为字典
然后才是代码中的计算，我是让你修改代码

将输出字符串解析为字典的九种方法：

方法一：使用正则表达式

import re

parsed_item_prices = {}
current_item = None
for line in output_string.split('\n'):
    if line.startswith("第"):
        current_item = re.search(r'：(.+)', line).group(1)
        parsed_item_prices[current_item] = {}
    elif not line.startswith("-") and current_item:
        parts = line.split(":")
        other_item = parts[0].strip()
        ratio = float(parts[1])
        parsed_item_prices[current_item][other_item] = ratio

方法二：使用字符串操作和切片

parsed_item_prices = {}
current_item = None
lines = output_string.split('\n')
for i in range(len(lines)):
    line = lines[i]
    if line.startswith("第"):
        current_item = line.split("：")[1].strip()
        parsed_item_prices[current_item] = {}
    elif not line.startswith("-"):
        parts = line.split(":")
        other_item = parts[0].strip()
        ratio = float(parts[1])
        parsed_item_prices[current_item][other_item] = ratio

方法三：使用字符串操作和索引

parsed_item_prices = {}
current_item = None
lines = output_string.split('\n')
for i in range(len(lines)):
    line = lines[i]
    if line.startswith("第"):
        current_item = line[line.find("：")+1:].strip()
        parsed_item_prices[current_item] = {}
    elif not line.startswith("-"):
        parts = line.split(":")
        other_item = parts[0].strip()
        ratio = float(parts[1])
        parsed_item_prices[current_item][other_item] = ratio

方法四：使用字符串操作和分割

parsed_item_prices = {}
current_item = None
for line in output_string.split('\n'):
    if line.startswith("第"):
        current_item = line.split("：")[1].strip()
        parsed_item_prices[current_item] = {}
    elif not line.startswith("-"):
        parts = line.split(":")
        other_item = parts[0].strip()
        ratio = float(parts[1])
        parsed_item_prices[current_item][other_item] = ratio

方法五：使用字符串操作和判断

parsed_item_prices = {}
current_item = None
lines = output_string.split('\n')
for line in lines:
    if line.startswith("第"):
        current_item = line.split("：")[1].strip()
        parsed_item_prices[current_item] = {}
    elif not line.startswith("-"):
        parts = line.split(":")
        if len(parts) == 2:
            other_item = parts[0].strip()
            ratio = float(parts[1])
            parsed_item_prices[current_item][other_item] = ratio

方法六：使用字符串操作和列表推导

parsed_item_prices = {}
current_item = None
lines = output_string.split('\n')
for line in lines:
    if line.startswith("第"):
        current_item = line.split("：")[1].strip()
        parsed_item_prices[current_item] = {}
    elif not line.startswith("-"):
        parts = [part.strip() for part in line.split(":")]
        if len(parts) == 2:
            parsed_item_prices[current_item][parts[0]] = float(parts[1])

方法七：使用字符串操作和字典get方法

parsed_item_prices = {}
current_item = None
lines = output_string.split('\n')
for line in lines:
    if line.startswith("第"):
        current_item = line.split("：")[1].strip()
        parsed_item_prices[current_item] = {}
    elif not line.startswith("-"):
        parts = line.split(":")
        other_item = parts[0].strip()
        ratio = float(parts[1]) if len(parts) == 2 else None
        if ratio is not None:
            parsed_item_prices[current_item][other_item] = ratio

方法八：使用字符串操作和异常处理

parsed_item_prices = {}
current_item = None
lines = output_string.split('\n')
for line in lines:
    try:
        if line.startswith("第"):
            current_item = line.split("：")[1].strip()
            parsed_item_prices[current_item] = {}
        elif not line.startswith("-"):
            parts = line.split(":")
            other_item = parts[0].strip()
            ratio = float(parts[1])
            parsed_item_prices[current_item][other_item] = ratio
    except IndexError:
        continue

方法九：使用列表操作和迭代器

parsed_item_prices = {}
current_item = None
lines = iter(output_string.split('\n'))
for line in lines:
    if line.startswith("第"):
        current_item = line.split("：")[1].strip()
        parsed_item_prices[current_item] = {}
    elif not line.startswith("-"):
        parts = line.split(":")
        other_item = parts[0].strip()
        ratio = float(parts[1])
        parsed_item_prices[current_item][other_item] = ratio

以上是九种不同的方法，以满足不同的偏好和需求。