drop where pandas code example

Example 1: python: remove specific values in a dataframe

df.drop(df.index[df['myvar'] == 'specific_name'], inplace = True)

Example 2: python pandas drop

df = pd.DataFrame(np.arange(12).reshape(3, 4),
...                   columns=['A', 'B', 'C', 'D'])
>>> df
   A  B   C   D
0  0  1   2   3
1  4  5   6   7
2  8  9  10  11

Drop columns
>>> df.drop(['B', 'C'], axis=1)
   A   D
0  0   3
1  4   7
2  8  11
>>> df.drop(columns=['B', 'C'])
   A   D
0  0   3
1  4   7
2  8  11

Example 3: dataframe drop rows by column value

df = df[df.line_race != 0]

Example 4: pandas dataframe drop rows with -ve in column value

df = df[df.line_race != 0]