df fillter ou columns code example

Example 1: how to keep only certain columns in dataframe

# Using DataFrame.drop
df.drop(df.columns[[1, 2]], axis=1, inplace=True)

# drop by Name
df1 = df1.drop(['B', 'C'], axis=1)

# Select the ones you want
df1 = df[['a','d']]

Example 2: pandas column filter

filter = df['column']!= 0
df = df[filter]