polars.Expr.meta.is_column

Expr.meta.is_column() → bool

Indicate if this expression is a basic (non-regex) unaliased column.

Examples

>>> e = pl.col("foo")
>>> e.meta.is_column()
True
>>> e = pl.col("foo") * pl.col("bar")
>>> e.meta.is_column()
False
>>> e = pl.col(r"^col.*\d+$")
>>> e.meta.is_column()
False