Self-review checklist for pconfigs code. Use after writing any pconfigs code — configs, pconfiged classes, pproperties, or experiment instance files — to catch common mistakes before submitting.
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name
pconfigs-review
description
Self-review checklist for pconfigs code. Use after writing any pconfigs code — configs, pconfiged classes, pproperties, or experiment instance files — to catch common mistakes before submitting.
pconfigs Self-Review
After writing pconfigs code, walk through each checklist item below. For every item that applies to your code, verify it is satisfied. Fix violations before presenting your answer.
1. External vs internal code
When wrapping code you do not own (external libraries, third-party classes or functions):
External classes use @pconfig(mocks=ExternalClass) with a Config suffix. Constructed via .construct().
External functions use @pconfig(calls=external_func) with a Func suffix (no Config). Invoked directly as a callable.
You did NOT use @pconfig(constructs=...) or create a custom @pconfiged wrapper for an external type. constructs= is only for classes you own and control.
2. Method parameters on @pconfiged classes
Methods on @pconfiged classes do NOT accept parameters that select between behaviors (e.g., a "mode" or "strategy" string). Such choices belong on the config as @penum fields, read via self.config at point of use.
No method has default parameter values (= ...).
No method uses *args or **kwargs.
3. @pproperty patterns
When a @pproperty overwrites a user-provided sub-config field:
The user-provided value is read via pinputs(self).field_name, not self.field_name.
Derived config types are preserved using the type(inputs) pattern (InputConfig: Type[T] = type(inputs)), not by hardcoding the base type.
Pin(...) is used if and only if the target field is typed Pinned[T]. Wrapping a value with Pin(...) when assigning to a plain-typed field is meaningless — the pproperty's returned value already overrides the user's input. Check the target field's type annotation before wrapping; pass the plain value if the field is not Pinned[T].
Fields that have no @pproperty are read via self, not pinputs(self).
When a @pproperty computes a value without reading the user-provided value of its own field:
The field is typed Pinned[T].
pdefaults sets the field to the Pinned sentinel.
4. Enum and mode patterns
All if/elif chains that check config options use @penum types, not raw strings.
Comparisons use is, not ==.
Every if/elif chain ends with else: raise ValueError(...).
Blank line between if and elif blocks; no blank line before a short else.
5. Config construction and naming
Every @pconfiged class you wrote implements system functionality that requires a runtime object — e.g., it holds constructed sub-objects, exposes methods called by other parts of the system, or performs work in __init__ beyond storing a reference to the config instance. A @pconfiged class whose sole effect is to carry a config instance implements nothing; remove it and use a plain @pconfig data container instead.
Attributes constructed from self.config.<name>_config are assigned to self.<name> (drop the _config suffix).
All .construct() calls on configs reachable from self.config happen in __init__, not inside methods. This applies to every config-constructed object — sub-configs, nested sub-configs (e.g. self.config.trainer_config.module_config.losses_config.construct()), calibration datasets, loss functions, helpers, etc. If a method body contains a .construct() call on a config path, move it to __init__ and store the result on self with a literal name (no leading underscore, no synonym). The only exception is when the call depends on a method parameter or runtime-produced value that cannot be known at init time; in that case, add a brief comment stating why deferred construction is required.
Config values are read from self.config at point of use, never cached on self.
6. Config instance files
base is passed as the first positional argument when deriving from another config.
When overriding a sub-config, base.sub_config is passed as the first positional argument to the inner constructor to preserve inherited fields.
No use of pdefaults(...) inside config construction blocks.
No Pinned fields are set in instance files.
7. Modification safety
Before modifying existing code, you determined whether experiments have produced valid results.
Small variations are implemented via config switches with backwards-compatible defaults, not via derived classes.
No existing runnable pconfig instance would behave differently after your change.
