Shuffle Columns in Dataframe

Question

I want to shuffle columns without order; completely pseudo-randomly, on one line of code.

Before:

  A B
0 1 2
1 1 2

After:

  B A
0 2 1
1 2 1

My attempts so far:

df = df.reindex(columns=columns)

df.sample(frac=1, axis=1)

df.apply(np.random.shuffle, axis=1)

Answer 1

You can use np.random.default_rng()'s permutation with a seed to make it reproducible.

df = df[np.random.default_rng(seed=42).permutation(df.columns.values)]