Periksa apakah daftar elememnt di kolom DataFrame
if df[df['WK'].isin(wk)]
Wide-eyed Wallaby
if df[df['WK'].isin(wk)]
pd.Series(['A', 'B']).isin(df.columns).all()
df\
.sample(100)\
.applymap(type)\
.mode(0)\
.astype(str) == "<class 'list'>"