Pandas笔记:设置索引
- 前端
- Stella981
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import pandas as pd
df = pd.DataFrame({"month": [1, 4, 7, 10],
"year": [2012, 2014, 2013, 2014],
"sale": [55, 40, 84, 31]})
new_df = df.set_index(["year", "month"])
print(new_df.index.names)
print(new_df.index.levels)
['year', 'month']
[[2012, 2013, 2014], [1, 4, 7, 10]]
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