[전희선] 13주차 미션 제출 (#115)

8th_members/전희선/13주차.md

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+## (Chapter 14) pdb 사용해보기
+#### (참고) 주요 PDB 명령어
+- n (next): 다음 라인으로 이동
+- s (step): 함수 내부로 들어감
+- c (continue): 다음 중단점까지 실행
+- p (print): 변수 값 출력
+- l (list): 현재 위치의 코드 표시
+- q (quit): 디버거 종료
+
+#### test.py
+```python
+import pdb
+
+def add(n1, n2):
+    result = n1 + n2
+    pdb.set_trace()
+    return result
+
+def subtract(n1, n2):
+    result = n2 - n1
+    pdb.set_trace()
+    return result
+
+a = 1
+b = 2
+c = 3
+d = add(a, b)
+e = subtract(c, b)
+```
+
+#### Result
+```
+✗ python3 -m pdb test.py
+> /Users/user/Documents/CPython-Guide/ch14/test.py(1)<module>()
+-> import pdb
+(Pdb) n
+> /Users/user/Documents/CPython-Guide/ch14/test.py(3)<module>()
+-> def add(n1, n2):
+(Pdb) n
+> /Users/user/Documents/CPython-Guide/ch14/test.py(8)<module>()
+-> def subtract(n1, n2):
+(Pdb) n
+> /Users/user/Documents/CPython-Guide/ch14/test.py(13)<module>()
+-> a = 1
+(Pdb) n
+> /Users/user/Documents/CPython-Guide/ch14/test.py(14)<module>()
+-> b = 2
+(Pdb) l
+  9  	    result = n2 - n1
+ 10  	    pdb.set_trace()
+ 11  	    return result
+ 12
+ 13  	a = 1
+ 14  ->	b = 2
+ 15  	c = 3
+ 16  	d = add(a, b)
+ 17  	e = subtract(c, b)
+ 18
+[EOF]
+(Pdb) n
+> /Users/user/Documents/CPython-Guide/ch14/test.py(15)<module>()
+-> c = 3
+(Pdb) n
+> /Users/user/Documents/CPython-Guide/ch14/test.py(16)<module>()
+-> d = add(a, b)
+(Pdb) s
+--Call--
+> /Users/user/Documents/CPython-Guide/ch14/test.py(3)add()
+-> def add(n1, n2):
+(Pdb) n
+> /Users/user/Documents/CPython-Guide/ch14/test.py(4)add()
+-> result = n1 + n2
+(Pdb) n
+> /Users/user/Documents/CPython-Guide/ch14/test.py(5)add()
+-> pdb.set_trace()
+(Pdb) n
+> /Users/user/Documents/CPython-Guide/ch14/test.py(6)add()
+-> return result
+(Pdb) n
+--Return--
+> /Users/user/Documents/CPython-Guide/ch14/test.py(6)add()->3
+-> return result
+(Pdb) n
+> /Users/user/Documents/CPython-Guide/ch14/test.py(17)<module>()
+-> e = subtract(c, b)
+(Pdb) s
+--Call--
+> /Users/user/Documents/CPython-Guide/ch14/test.py(8)subtract()
+-> def subtract(n1, n2):
+(Pdb) c
+> /Users/user/Documents/CPython-Guide/ch14/test.py(11)subtract()
+-> return result
+(Pdb) l
+  6  	    return result
+  7
+  8  	def subtract(n1, n2):
+  9  	    result = n2 - n1
+ 10  	    pdb.set_trace()
+ 11  ->	    return result
+ 12
+ 13  	a = 1
+ 14  	b = 2
+ 15  	c = 3
+ 16  	d = add(a, b)
+(Pdb) n
+--Return--
+> /Users/user/Documents/CPython-Guide/ch14/test.py(11)subtract()->-1
+-> return result
+(Pdb) n
+--Return--
+> /Users/user/Documents/CPython-Guide/ch14/test.py(17)<module>()->None
+-> e = subtract(c, b)
+(Pdb) n
+--Return--
+> <string>(1)<module>()->None
+(Pdb) n
+> /Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.8/lib/python3.8/bdb.py(584)run()
+-> self.quitting = True
+(Pdb) n
+> /Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.8/lib/python3.8/bdb.py(585)run()
+-> sys.settrace(None)
+(Pdb) n
+The program finished and will be restarted
+> /Users/user/Documents/CPython-Guide/ch14/test.py(1)<module>()
+-> import pdb
+(Pdb) q
+```
+
+## (Chapter 15) cProfile 사용해보기
+
+(위 test.py에서 pdb 관련 부분만 주석 처리)
+```
+✗ python3 -m cProfile test.py
+         5 function calls in 0.000 seconds
+
+   Ordered by: standard name
+
+   ncalls  tottime  percall  cumtime  percall filename:lineno(function)
+        1    0.000    0.000    0.000    0.000 test.py:3(<module>)
+        1    0.000    0.000    0.000    0.000 test.py:3(add)
+        1    0.000    0.000    0.000    0.000 test.py:8(subtract)
+        1    0.000    0.000    0.000    0.000 {built-in method builtins.exec}
+        1    0.000    0.000    0.000    0.000 {method 'disable' of '_lsprof.Profiler' objects}
+```
+![image](https://github.com/heehehe/CPython-Guide/assets/41580746/6fa7b923-d139-487d-9f2f-6fb9b55dd677)