human
reorganise a data frame.
assistant
Here is a Python function to reorganise a data frame

import pandas as pd

def reorganise_dataframe(df, column_name, new_column_name):
    """
    Reorganise a data frame
    Parameters
    ----------
    df : data frame
    column_name : column name
    new_column_name : new column name

    Returns
    -------
    df : data frame
    """
    df[new_column_name] = df[column_name]
    df.drop([column_name], axis=1, inplace=True)
    return df

# Enter the data frame
df = pd.DataFrame({'col1': [1, 2, 3], 'col2': [4, 5, 6]})

# Calling the function
df = reorganise_dataframe(df, 'col1', 'new_col1')

# Printing the data frame
print(df)

#Example Output
#    col2  new_col1
# 0     4         1
# 1     5         2
# 2     6         3

#Remember to inspect code for bugs.