Pandas เปลี่ยนชื่อคอลัมน์ค่าของพจนานุกรม

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เปลี่ยนชื่อคอลัมน์ pandas

>>> df = pd.DataFrame({"A": [1, 2, 3], "B": [4, 5, 6]})
>>> df.rename(columns={"A": "a", "B": "c"})
   a  c
0  1  4
1  2  5
2  3  6
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เปลี่ยนชื่อคอลัมน์ที่แอ็กทีฟ:pandas dataframe

df.rename(columns={"old_col1": "new_col1", "old_col2": "new_col2"})
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pandas เปลี่ยนชื่อคอลัมน์ค่าของพจนานุกรม

df['col1'].map(di)       # note: if the dictionary does not exhaustively map all
                         # entries then non-matched entries are changed to NaNs
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pandas เปลี่ยนชื่อคอลัมน์ค่าของพจนานุกรม

df['col1'].map(di).fillna(df['col1'])

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