Python如何在DataFrame增加数值

import pandas as pd
name = ['Cindy','John','Matt']
point = [78,87,88]
df_grade = pd.DataFrame(name, columns=['name'])
df_grade = pd.concat([df_grade, pd.DataFrame(point,columns=['point'])],axis=1)

df_grade['gender'] = 'male'
print(df_grade)

  name point gender
0 Cindy   78  male
1  John   87  male
2  Matt   88  male