merge two columns pandas
df["period"] = df["Year"] + df["quarter"]merge two columns pandas
df["period"] = df["Year"] + df["quarter"]pandas dataframe add two columns int and string
df = df['Day'].map(str) + '-' + df['Month'].map(str) + '-' + df['Year'].map(str)concatenating datfra,esin pandas
In [8]: df4 = pd.DataFrame({'B': ['B2', 'B3', 'B6', 'B7'],
...: 'D': ['D2', 'D3', 'D6', 'D7'],
...: 'F': ['F2', 'F3', 'F6', 'F7']},
...: index=[2, 3, 6, 7])
...:
In [9]: result = pd.concat([df1, df4], axis=1, sort=False)dataframe concatenate
# Pandas for Python
df['col1 & col2'] = df['col1']+df['col2']
#Output
#col1 col2 col1 & col2
#A1 A2 A1A2
#B1 B2 B1B2concat dataframes
result = pd.concat([df1, df2])Copyright © 2021 Codeinu
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