Generating Unique Column Names from Vaex DataFrame

This function is used to generate a specified number of unique column names from a Vaex DataFrame. It creates new column names by permuting existing ones.

Technology Stack : Vaex, itertools

Code Type : Function

Code Difficulty : Intermediate

                
                    
def random_unique_column_name(df, num_columns=1):
    import vaex as vx
    from itertools import permutations
    
    unique_names = set(df.columns)
    while num_columns > 0:
        column_permutations = permutations(unique_names)
        for perm in column_permutations:
            if len(perm) == num_columns:
                new_name = ''.join(perm)
                if new_name not in unique_names:
                    unique_names.add(new_name)
                    df[new_name] = df[perm[0]]
                    num_columns -= 1
                    break
    return df