plotting two columns of a dataframe in python
df.plot(x='col_name_1', y='col_name_2', style='o')
plotting two columns of a dataframe in python
df.plot(x='col_name_1', y='col_name_2', style='o')
how to pick out separate columns from the pandas dataframe object
df1 = df.iloc[:, 0:2] # If you want to do it by index. Remember that Python does not slice inclusive of the ending index.
df1 = df[['a', 'b']] ## if you want to do it b nae
df multiple columns into one column
df.stack().reset_index()
level_0 level_1 0
0 0 Column 1 A
1 0 Column 2 E
2 1 Column 1 B
3 1 Column 2 F
4 2 Column 1 C
5 2 Column 2 G
6 3 Column 1 D
7 3 Column 2 H
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