“unirse a pandas dataframes” Código de respuesta

Pandas se unió

df.merge(df2, left_on = "doc_id", right_on = "doc_num", how = "left")
Comfortable Cockroach

Únete a los pandas de columna

# df1 as main df and use the feild from df2 and map it into df1

df1.merge(df2,on='columnName',how='left')
Magnificent Moth

unirse a pandas dataframes

df1 = pd.DataFrame(
    {
        "A": ["A0", "A1", "A2", "A3"],
        "B": ["B0", "B1", "B2", "B3"],
    }
)
df2 = pd.DataFrame(
    {
        "A": ["A4", "A5", "A6", "A7"],
        "B": ["B4", "B5", "B6", "B7"],
    }
)


df3 = pd.DataFrame(
    {
        "A": ["A8", "A9", "A10", "A11"],
        "B": ["B8", "B9", "B10", "B11"],
    }
)
frames = [df1, df2, df3]
result = pd.concat(frames, ignore_index=True)
"""
result = pd.DataFrame(
    {
        "A": ["A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7", "A8", "A9", "A10", "A11"],
        "B": ["B0", "B1", "B2", "B3", "B4", "B5", "B6", "B7", "B8", "B9", "B10", "B11"],
    },
    index=[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11],
)
"""
TELLI Hichem

Pandas unirse a DataFrame

#https://pandas.pydata.org/docs/user_guide/merging.html
Real Raccoon

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