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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
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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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ãŸãã**æç€ºããããšã©ãŒã¡ãã»ãŒãžãšã³ãŒãã«ã¯äžæŽåããããŸã**ãPython ã§ã¯ `str * int` ã¯æå¹ã§ãæååã®ç¹°ãè¿ãã«ãªããŸãã
```python
"100" * 2 # "100100"ïŒ200ã«ã¯ãªããªãïŒ
```
ãã®ããã`price` ãæååã`quantity` ãæŽæ°ã ã£ãå Žåããã®æãç®èªäœã§ã¯ãªããé垞㯠`sum()` ãæååãè¶³ãããšããæ®µéã§ãšã©ãŒã«ãªããŸããå®éã«åããŠããã³ãŒããšå®å
šãª traceback ã確èªããŠãã ããã
### æ³å®ãããåå
DB ããååŸãã `price` ãæ°å€ã§ã¯ãªãæååã«ãªã£ãŠããå¯èœæ§ããããŸãããŸãå®éã®å€ãšåã確èªããŸãã
```python
for order in orders:
print(
repr(order["price"]), type(order["price"]),
repr(order["quantity"]), type(order["quantity"]),
)
```
### ä¿®æ£äŸ
`price` ãæ°å€åœ¢åŒã®æååã`quantity` ãæŽæ°ãŸãã¯æŽæ°åœ¢åŒã®æååãªããèšç®åã«å€æããŸããéé¡ã«ã¯ãæµ®åå°æ°ç¹ã®èª€å·®ãé¿ãããã `Decimal` ãé©ããŠããŸãã
```python
from decimal import Decimal
def get_user_orders(user_id):
orders = db.query(
"SELECT prâŠ
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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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äžæ¹ã§ã**åå®å
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ç¢æ§**ã«éèŠãªæ¹åäœå°ããããŸãã以äžãéèŠåºŠé ã«ãŸãšããŸãã
---
## ææäºé
ãµããª
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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
ç¢æ§ | ã¬ã¹ãã³ã¹åœ¢ç¶ã®ã©ã³ã¿ã€ã æ€èšŒããªã |
| 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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## æ¹åç¹
### 1. `any` ãå
·äœçãªåã«çœ®ãæãã
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### 3. ã«ãŒããšå€æ°ãç°¡çŽ åãã
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- å代å
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å㯠`const` ã«ããã`const` ã§ã `push` ã¯å¯èœã§ãã
- `"first_name + ' ' + last_name"` ã¯ãã³ãã¬ãŒããªãã©ã«ã«ããã
- ããŒãžãµã€ãºã® `100` ã¯å®æ°åããã
### 4. ããŒãžããŒã·ã§ã³ã®çµäºæ¡ä»¶ã確èªãã
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ã100ä»¶è¿ã**ãšããAPI仿§ã«äŸåããŸããAPIã« `hasMore` ã `nextCursor` ããããªãããããäœ¿ãæ¹ã確å®ã§ãã
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