def hash_columns(ds, hashed_columns):
if len(hashed_columns) == 0:
return ds
assert all(col < len(ds.column_names) for col in hashed_columns)
for row in ds.rows:
for col in hashed_columns:
val = row.values[col]
if val.getType() not in [Value.NVAL, Value.__EMPTY__]:
row.values[col] = Value(iVal=murmurhash2(val))
return ds
def hash_columns(ds, hashed_columns):
if len(hashed_columns) == 0:
return ds
for col in hashed_columns:
assert col < len(ds.column_names), "The hashed column should in range."
for row in ds.rows:
for col in hashed_columns:
if row.values[col].getType() != Value.NVAL and row.values[col].getType() != Value.__EMPTY__:
row.values[col] = Value(iVal = murmurhash2(row.values[col]))
return ds
