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+### 1. pdb 실행
+
+|shortcut|설명|
+|---|---|
+|`l`|주변 소스코드를 출력하며 현재 라인이 화살표로 나옴|
+|`n`|다음 문장으로 이동|
+|`s`|Step Into|
+|`w`|함수의 call stack 출력|
+|`s`|현재 함수의 argument들을 출력|
+
+<img src="https://github.com/wooy0ng/wooy0ng/assets/37149278/f66f7214-b2cb-4178-9d1b-dfd27835e1cb" width=600>
+
+<br><br><hr>
+
+### 2. CProfile 예제 파일 직접 생성해서 실행해보기
+
+``` bash
+$ python -m cProfile -o output.pstat portscanner_multithread.py
+```
+
+<!-- <img src="https://github.com/wooy0ng/wooy0ng/assets/37149278/5e2852a3-c7d5-41fe-a3c8-5b172bd7e954" width=600> -->
+
+
+<br>
+
+``` bash
+$ pip install snakeviz
+$ python -m snakeviz output.pstat
+```
+
+<img src="https://github.com/wooy0ng/wooy0ng/assets/37149278/e1e0e8db-4679-4672-8689-6c3dcfcbe82e" width=1000>
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