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Traceback (most recent call last):
File "app.py", line 23, in get_user_orders
total = sum(order["price"] * order["quantity"] for order in orders)
TypeError: unsupportâŠ
Fugu Ultra v2
## åå
`order["price"]` ã **æ°å€ã§ã¯ãªãæåå (`str`)** ã§è¿ã£ãŠããŠããããšãåå ã§ãã
Python ã§ã¯ `"1200" * 3` ã¯æãç®ã§ã¯ãªããæååã3åç¹°ãè¿ãããšããæå³ã«ãªããŸããä»å㯠`quantity` ã `int` ãªã®ã§äžèŠæç«ãããã§ããããšã©ãŒã¡ãã»ãŒãžã瀺ãéã `str * int` ã®çµã¿åããã§åãåã¿åãã `TypeError` ã«ãªã£ãŠããŸãã
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1. **ã«ã©ã åãæåå** â `price` ã `VARCHAR`/`TEXT` ã§å®çŸ©ãããŠããïŒ`"1,200"` ã `"$12.00"` ã®ãããªå€ãæ··ãã£ãŠããã±ãŒã¹ãïŒ
2. **DBãã©ã€ãã®å倿** â MySQL ã® `DECIMAL` ãæååã§è¿ãèšå®ïŒ`raw=True` ãªã©ïŒãSQLite ã«æååã®ãŸãŸ INSERT ãããŠãã
3. **ã¢ããªå±€ã§æååå** â ãã©ãŒã /JSON ã®å
¥åã倿ããã«ãã®ãŸãŸ INSERT ããŠãã
ãŸãå®éã®åã確èªãããšåãåããã§ããŸãã
```python
rows = db.query("SELECT price, quantity FROM orders WHERE user_id = %s", user_id)
for r in rows[:5]:
print(repr(r["price"]), type(r["price"]), repr(r["quantity"]), type(r["quantiâŠ
å¿çæé 97.1ç§åºå 6218 ããŒã¯ã³
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### 1. åå
```
TypeError: unsupported operand type(s) for *: 'str' and 'int'
```
㯠`æåå * æ°å€` ã®æãç®ãã§ããªããšãããšã©ãŒã§ãã
`quantity` 㯠`int` ãªã®ã«å¯Ÿãã`price` ã `'1500'` ã®ãã㪠`str` ã«ãªã£ãŠããŸãã
DBã® `price` ã«ã©ã ã `VARCHAR / TEXT` åã«ãªã£ãŠããããMySQLãªã©ã§ `DECIMAL` åã䜿ã£ãŠããŠDBãã©ã€ããæååãšããŠè¿ããŠããã®ãåå ã§ããçºçããŸãã
### 2. ä¿®æ£æ¹æ³
èšç®ããåã« `price` ãæ°å€åã«å€æããå¿
èŠããããŸããéé¡ã®èšç®ãªã®ã§ `float` ã§ã¯ãªã `Decimal` ã䜿ãã®ãæšå¥šã§ãã
#### ä¿®æ£äŸ1: ã·ã³ãã«ãªä¿®æ£
```python
from decimal import Decimal
def get_user_orders(user_id):
orders = db.query("SELECT price, quantity FROM orders WHERE user_id = %s", (user_id,))
total = sum(Decimal(str(order["price"])) * int(order["quantity"]) for order in orders)
returâŠ
å¿çæé 14.4ç§åºå 1292 ããŒã¯ã³
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async function fetchAllUsers(page: number = 1): Promise<any[]> {
let allUsers: any[] = [];
let hasMore = true;
let currentPage = page;
while (hasMoâŠ
Fugu Ultra v2
# ã³ãŒãã¬ãã¥ãŒ: `fetchAllUsers`
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