semvec/pypi-packages huggingface dataset:
pynamodb-polymorph 0.4.0
Calculated/copied attributes to support advanced single-table design in DynamoDB
License: MIT
Requires Python: >=3.8

# PynamoDB Polymorph

This package has utilities that are useful when using PynamoDB with a
single-table (polymorphic) design and overloading Global Secondary Indexes.

Take for example a Publisher class that needs to use a compound key of their
type prefix and their name. If you rely on callers doing the copy in code
there is possibility for them to update the name without also updating the
GSI sort key that contains the name. The `CompoundTemplateAttribute` uses
`string.Template` templating to fill unicode or numeric attributes into a
string template to build keys automatically.

```python
class Publisher(Base, discriminator="Publisher"):
    name = UnicodeAttribute()
    description = UnicodeAttribute(default="")
    gsi1_pk = CopiedDiscriminatorAttribute(source="cls")

    _slug = "PUBLISHER"
    gsi1_sk = JoinedUnicodeAttribute(attrs=["_slug", 'name'], sep='#')

    # Alternative way to specify gsi1_sk using a `string.Template`.
    # This is best for cases that aren't simply joining attrs with a character
    # gsi1_sk = CompoundTemplateAttribute(
    #     template="PUBLISHER#$name",
    #     attrs=["name"],
    # )
```

The template above will take any value in `name` and fill it in to the
template, so `name="Random Book Publishing House"` will become a
`gsi1_sk="PUBLISHER#Random Book Publishing House"`.
denali 0.1
Denali is a namespace for a collection of Python packages.
License: MIT

======
Denali
======

Denali is a namespace for a collection of Python packages.

The list below is the official collection of packages under the Denali namespace. If a
package is using the Denali namespace, but is not listed below, it is not under this
organization.

Official packages
=================

Denali

    The list of official packages under the Denali namespace.