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使用组键连接DataFrame：

为了使用组键连接数据帧，我们使用keys参数覆盖列名。Keys参数是在基于现有Seri​​es创建新DataFrame时覆盖列名称。

# importing pandas module
import pandas as pd

# Define a dictionary containing employee data
data1 = {'Name':['Jai', 'Princi', 'Gaurav', 'Anuj'],
'Age':[27, 24, 22, 32],
'Address':['Nagpur', 'Kanpur', 'Allahabad', 'Kannuaj'],
'Qualification':['Msc', 'MA', 'MCA', 'Phd']}

# Define a dictionary containing employee data
data2 = {'Name':['Abhi', 'Ayushi', 'Dhiraj', 'Hitesh'],
'Age':[17, 14, 12, 52],
'Address':['Nagpur', 'Kanpur', 'Allahabad', 'Kannuaj'],
'Qualification':['Btech', 'B.A', 'Bcom', 'B.hons']}

# Convert the dictionary into DataFrame 
df = pd.DataFrame(data1,index=[0, 1, 2, 3])

# Convert the dictionary into DataFrame 
df1 = pd.DataFrame(data2, index=[4, 5, 6, 7])

print(df, "\n\n", df1)