I have 2 polars LazyFrames: df1 = pl.DataFrame(data={ 'foo': np.random.uniform(0,127, size= n).astype(np.float64), 'bar': np.random.uniform(1e3,32767, size= n).astype(np.float64), 'baz': np.random.uniform(1e6,2147483, size= n).astype(np.float64) }).lazy() df2 = pl.DataFrame(data={ 'foo': np.random.uniform(0,127, size= n).astype(np.float64), 'bar': np.random.uniform(1e3,32767, size= n).astype(np.float64), 'baz': np.random.uniform(1e6,2147483, size= n).astype(np.float64) }).lazy() I would like to multiply each column in df1 with its respective column in df2. If I convert these to non-lazy DataFrames I can achieve this: df1.collect() * df2.collect() foo bar baz f64 f64 f64 3831.295563 6.4637e6 3.3669e12 164.194271 2.9691e8 2.2696e12 3655.918761 1.9444e7 2.3625e12 7191.48868 3.7044e7 3.1687e12 9559.505277 2.6864e8 2.5426e12 However, if I try to perform the same expression on the LazyFrames, I get an exception df1 * df2 TypeError: unsupported operand type(s) for *: 'LazyFrame' and 'LazyFrame' How can I perform column-wise multiplication across 2 LazyFrames? Continue reading...