pandas 求和，求平均，統計

有這樣一張表：

求和，求平均：

1. import pandas as pd
2. student = pd.read_excel("C:/Users/Administrator/Desktop/Students.xlsx",index_col="ID")
3. temp = student[["Test_1","Test_2","Test_3"]]
4. student["total"] = temp.sum(axis=1)#axis 0為列，1為行
5. student["avg"] = temp.mean(axis=1)
6. print(student)

算各科成績平均，求和：

1. col_mean = student[["Test_1","Test_2","Test_3","total","avg"]].mean()
2. col_mean["Name"]="Summary"
3. student = student.append(col_mean,ignore_index=True)
4. student[["Test_1","Test_2","Test_3","total","avg"]] = student[["Test_1","Test_2","Test_3","total","avg"]].astype(int)
5. print(student)

append可直接加入一行

DataFrame.append(other, ignore_index=False, verify_integrity=False, sort=None)

參考官網