چالش پایتون | United States America (US)

Create: 2025-03-01 Update: 2025-06-30 04:20:59

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❇️ پیدا کردن الگوهای با عبارتهای منظم

اینکه بگوییم چیزی با @ شروع میگردد یک الگو می باشد برای ما کافی نیست. بلکه نشانه های است که با @ شروع می شوند و چیزی رو باید دنبال کنند.
برای مثال چگونه میتوانیم تشخیص دهیم که اگر @ در جمله ای ذکر شد آن شامل الگو خاص ما خواهد شد یا خیر. حالتهای که ممکن است بعد از @ وارد شود و آن کلمه را تبدیل به یک الگو خاص نمایید رو یادداشت میکنیم:

انظباق چیزهای بعد از @

- حروف الفبا
-اعداد
-نشانه های خاصی مانند (_)

مثال :
@UN_Spokesperson
@Python
@10years

بنابراین بعد از @ میتواند عبارتهای زیر قرار گیرد:
@[A-Za-z0-9_]+

حروف الفبای بزرگ و کوچک، اعداد صفر تا 9 ، آندرلاین
با علامت + بعد از کروشه مشخص میکنیم این عبارتها میتوانند تکرار گردند.

حالا در بخش بعدی نحوه نوشتن کد برای این عبارت منظم را خواهیم گفت

🗂 مرکز آموزش پایتون
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