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以äžã®ãšã©ãŒãPythonã¢ããªã±ãŒã·ã§ã³ã§çºçããŠããŸããåå ãç¹å®ããŠä¿®æ£ããŠãã ããã
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
æååã«ãªãå
žåçãªçç±ã¯æ¬¡ã®éãã§ãã
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
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åå :
- DB ããè¿ã£ãŠãã order["price"] ãæåå (äŸ: "9.99") ã«ãªã£ãŠãããæ°å€æŒç®ã«äœ¿ããåã«ãªã£ãŠããŸããããã®ãã price ãš quantity ãæããããšãããšãã«åã®äžæŽåã§ãšã©ãŒã«ãªããŸãïŒæ°å€ã«å€æããŠããæããå¿
èŠããããŸãïŒã
- éé¡ãæ±ãå Žå㯠float ãã Decimal ã䜿ãã®ãæãŸããïŒäžžã誀差ãé¿ããããïŒã
ä¿®æ£äŸïŒæšå¥š: Decimal ã䜿ããå®å
šã«å€æã»äŸå€åŠçïŒ:
from decimal import Decimal, InvalidOperation
def get_user_orders(user_id):
rows = db.query("SELECT price, quantity FROM orders WHERE user_id = %s", user_id)
orders = []
total = Decimal('0')
for r in rows:
# æååã»æ°å€ã©ã¡ãã§ã察å¿ã㊠Decimal ã«å€æ
try:
price = Decimal(str(r['price']))
except (InvalidOperation, KeyError):
price = Decimal('0')
# quantity ãæŽæ°ã«å€æïŒäžæ£ãªã 0 ã«ãããªã©é©å®ãã³ããªã³ã°ïŒ
try:âŠ
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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`
ããžãã¯ã®æå³ã¯æç¢ºã§ã`async/await` ã«ããçŽ çŽãªå®è£
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ç¢æ§**ã«éèŠãªæ¹åäœå°ããããŸãã以äžãéèŠåºŠé ã«ãŸãšããŸãã
---
## ææäºé
ãµããª
| # | éèŠåºŠ | åé¡ | å
容 |
|---|---|---|---|
| 1 | ðŽ é« | ãã° | `response.ok` ã確èªããŠããªãïŒ4xx/5xx ãæ£åžžç³»ãšããŠåŠçïŒ |
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šäŸåïŒ |
| 3 | ðŽ é« | åå®å
š | `any[]` ãåŒã³åºãåŽå
šäœã«äŒæ |
| 4 | ð äž | å
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| 5 | ð äž | å
ç¢æ§ | ãã£ã³ã»ã«ïŒ`AbortSignal`ïŒéå¯Ÿå¿ |
| 6 | ð äž | ä¿å®æ§ | ããžãã¯ãã³ã㌠`100` ã®éè€å®çŸ© |
| 7 | ð äž | ä¿å®æ§ | ããžãã¯æåå `"deleted"` |
| 8 | ð äžâŠ
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- å¿
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以äžã«ãã·ã³ãã«ã§å
ç¢ãªé次å®è¡çããšãããŒãžæ°ãåããå Žåã®äžŠåååŸçããããã«ãã¡ã¢ãªå¹çã®è¯ã async iterableïŒé次æ¶è²»ïŒçãã瀺ããŸãã
1) æšå¥šïŒåä»ãïŒãšã©ãŒãã³ããªã³ã°ïŒèªã¿ããã鿬¡ååŸç
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å ±ããè¿ããªãå Žåã«æå¹ã
```ts
type RawUser = {
id: string;
first_name: strâŠ
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---
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