python rename columns

To rename columns in Python, you can use the `rename` method of a pandas DataFrame. Here is an example code snippet:

import pandas as pd

# create a sample DataFrame
df = pd.DataFrame({'A': [1, 2, 3], 'B': [4, 5, 6]})

# rename the columns
df = df.rename(columns={'A': 'new_A', 'B': 'new_B'})

# print the updated DataFrame
print(df)

In this example, we first create a sample DataFrame with columns 'A' and 'B'. We then use the `rename` method to rename the columns to 'new_A' and 'new_B'. Finally, we print the updated DataFrame using the `print` function.