DataFrame加载程序 #

import pandas as pd
 

df = pd.read_csv('example_data/mlb_teams_2012.csv')
 

df.head()
 

 
 .dataframe tbody tr th:only-of-type {
 vertical-align: middle;
 }
 
 .dataframe tbody tr th {
 vertical-align: top;
 }
 
 .dataframe thead th {
 text-align: right;
 }
 
 
 
 
|  | 
 Team
  | 
 "Payroll (millions)"
  | 
 "Wins"
  |
| --- | --- | --- | --- |
| 
 0
  | 
 Nationals
  | 
 81.34
  | 
 98
  |
| 
 1
  | 
 Reds
  | 
 82.20
  | 
 97
  |
| 
 2
  | 
 Yankees
  | 
 197.96
  | 
 95
  |
| 
 3
  | 
 Giants
  | 
 117.62
  | 
 94
  |
| 
 4
  | 
 Braves
  | 
 83.31
  | 
 94
  |
 

from langchain.document_loaders import DataFrameLoader
 

loader = DataFrameLoader(df, page_content_column="Team")
 

loader.load()
 

[Document(page_content='Nationals', metadata={' "Payroll (millions)"': 81.34, ' "Wins"': 98}),
 Document(page_content='Reds', metadata={' "Payroll (millions)"': 82.2, ' "Wins"': 97}),
 Document(page_content='Yankees', metadata={' "Payroll (millions)"': 197.96, ' "Wins"': 95}),
 Document(page_content='Giants', metadata={' "Payroll (millions)"': 117.62, ' "Wins"': 94}),
 Document(page_content='Braves', metadata={' "Payroll (millions)"': 83.31, ' "Wins"': 94}),
 Document(page_content='Athletics', metadata={' "Payroll (millions)"': 55.37, ' "Wins"': 94}),
 Document(page_content='Rangers', metadata={' "Payroll (millions)"': 120.51, ' "Wins"': 93}),
 Document(page_content='Orioles', metadata={' "Payroll (millions)"': 81.43, ' "Wins"': 93}),
 Document(page_content='Rays', metadata={' "Payroll (millions)"': 64.17, ' "Wins"': 90}),
 Document(page_content='Angels', metadata={' "Payroll (millions)"': 154.49, ' "Wins"': 89}),
 Document(page_content='Tigers', metadata={' "Payroll (millions)"': 132.3, ' "Wins"': 88}),
 Document(page_content='Cardinals', metadata={' "Payroll (millions)"': 110.3, ' "Wins"': 88}),
 Document(page_content='Dodgers', metadata={' "Payroll (millions)"': 95.14, ' "Wins"': 86}),
 Document(page_content='White Sox', metadata={' "Payroll (millions)"': 96.92, ' "Wins"': 85}),
 Document(page_content='Brewers', metadata={' "Payroll (millions)"': 97.65, ' "Wins"': 83}),
 Document(page_content='Phillies', metadata={' "Payroll (millions)"': 174.54, ' "Wins"': 81}),
 Document(page_content='Diamondbacks', metadata={' "Payroll (millions)"': 74.28, ' "Wins"': 81}),
 Document(page_content='Pirates', metadata={' "Payroll (millions)"': 63.43, ' "Wins"': 79}),
 Document(page_content='Padres', metadata={' "Payroll (millions)"': 55.24, ' "Wins"': 76}),
 Document(page_content='Mariners', metadata={' "Payroll (millions)"': 81.97, ' "Wins"': 75}),
 Document(page_content='Mets', metadata={' "Payroll (millions)"': 93.35, ' "Wins"': 74}),
 Document(page_content='Blue Jays', metadata={' "Payroll (millions)"': 75.48, ' "Wins"': 73}),
 Document(page_content='Royals', metadata={' "Payroll (millions)"': 60.91, ' "Wins"': 72}),
 Document(page_content='Marlins', metadata={' "Payroll (millions)"': 118.07, ' "Wins"': 69}),
 Document(page_content='Red Sox', metadata={' "Payroll (millions)"': 173.18, ' "Wins"': 69}),
 Document(page_content='Indians', metadata={' "Payroll (millions)"': 78.43, ' "Wins"': 68}),
 Document(page_content='Twins', metadata={' "Payroll (millions)"': 94.08, ' "Wins"': 66}),
 Document(page_content='Rockies', metadata={' "Payroll (millions)"': 78.06, ' "Wins"': 64}),
 Document(page_content='Cubs', metadata={' "Payroll (millions)"': 88.19, ' "Wins"': 61}),
 Document(page_content='Astros', metadata={' "Payroll (millions)"': 60.65, ' "Wins"': 55})]