1 import pandas as pd
2
3
4
5
6 students = pd.DataFrame([[1, 'Alice'],
7 [2, 'Bob'],
8 [13, 'John'],
9 [6,'Alex']], columns = ['student_id', 'student_name'])
10
11
12 print(students)
13
14
15
16 subjects = pd.DataFrame([['Math'],
17 ['Physics'],
18 ['Programming'],
19 ], columns = ['subject_name'])
20
21
22 print(subjects)
23
24 students['value'] = 1
25 subjects['value'] = 1
26
27 a = students.merge(subjects, how = 'outer', on = 'value')
28 del a['value']
29 print('\n', a)
标签：笛卡尔,python,value,students,subjects,DataFrame,pd,print,Pandas From： https://www.cnblogs.com/bravesunforever/p/17649732.html