numpy pandas homework

2023/homework/Zhao_ShaoDong/231203_numpy/choose.md

@@ -1 +1,35 @@
-## 1. C.
+## 1. C
+
+
+## 2. D
+
+
+## 3. B
+one dimensional array
+
+
+## 4. E
+
+
+## 5. C
+d[1,2] is the third element of second set of d
+
+
+## 6. C
+5+8
+
+
+## 7. E
+lengths of arrays are not equal
+
+
+## 8. C
+1+3 + 1+3+3
+
+
+## 9. C
+axis=1 mean adding in row direction, 0 for column direction
+
+
+## 10. E
+array is one dimensional, but two indices

2023/homework/Zhao_ShaoDong/231203_numpy/numpy_submit.txt

@@ -0,0 +1,10 @@
+C
+D
+B
+E
+C
+C
+E
+C
+C
+E

2023/homework/Zhao_ShaoDong/231203_pandas/choose.md

@@ -0,0 +1,38 @@
+## 1. B
+When you select a single column, you are essentially extracting a one-dimensional structure, which is represented as a Series in pandas.
+
+## 2. D
+
+
+## 3. C
+
+
+## 4. A
+
+
+## 5. B
+
+
+## 6. D
+
+
+## 7. A
+
+
+## 8. C
+
+
+## 9. C
+??? a mistake
+
+
+## 10. D
+
+
+## 11. B
+
+
+## 12. B
+
+
+

2023/homework/Zhao_ShaoDong/231203_pandas/pandas_submit.txt

@@ -0,0 +1,12 @@
+B
+D
+C
+A
+B
+D
+A
+C
+C
+D
+B
+B

2023/homework/Zhao_ShaoDong/231203_python/select_answer.py

@@ -36,7 +36,7 @@ def extract_choices_from_file(inputfile_path,outputfile_path):
 
 
 # example
-inputfile_path = 'choose.md'  
-outputfile_path = 'test.txt'
+inputfile_path = './231203_pandas/choose.md'  
+outputfile_path = './231203_pandas/pandas_submit.txt'
 result = extract_choices_from_file(inputfile_path,outputfile_path)