2026-02-21 07:43:33 +01:00
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# base
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`aiomql.core.base` — Foundational base classes for data structure handling.
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## Overview
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Provides the `Base` and `_Base` classes that all data-model and trading classes inherit from.
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`Base` offers attribute management, dictionary conversion, and filtering.
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`_Base` extends it with automatic access to the MetaTrader terminal and configuration.
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## Classes
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### `BaseMeta`
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> Metaclass that lazily initialises `config` and `mt5` on first access.
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#### `_setup()`
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Attaches `Config()` and `MetaTrader()` (or sync variant) to the class if not already present.
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---
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### `Base`
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> Common base class for all data structures in aiomql.
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| Attribute | Type | Description |
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|-----------|------|-------------|
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| `exclude` | `set[str]` | Attributes excluded from dict conversion (default: `mt5`, `config`, …) |
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| `include` | `set[str]` | Attributes always included (overrides `exclude`) |
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#### `__init__(**kwargs)`
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Sets keyword arguments as instance attributes via `set_attributes`.
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#### `set_attributes(**kwargs)`
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Sets only attributes that are annotated on the class body. Logs a debug message for unknown or
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non-convertible attributes.
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#### `annotations` *(property)*
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Merged `__annotations__` from all ancestor classes.
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#### `class_vars` *(property)*
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Annotated class-level attributes from the full MRO.
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#### `dict` *(property)*
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All instance and class attributes as a dictionary, excluding those in `exclude`.
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#### `get_dict(exclude=None, include=None)`
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Returns a filtered dictionary. If both `include` and `exclude` are provided, `include` takes precedence.
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#### `__repr__()`
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Shows up to 3 key attributes; appends `...` with the last attribute if there are more.
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---
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### `_Base`
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> Extended base class with `MetaTrader` and `Config` integration.
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Inherits from `Base` with `BaseMeta` as its metaclass.
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| Attribute | Type | Default | Description |
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|-----------|------|---------|-------------|
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| `mt5` | `MetaTrader \| MetaTraderSync` | — | The MetaTrader interface (auto-initialised) |
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| `config` | `Config` | — | The global configuration instance |
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| `mode` | `Literal["async", "sync"]` | `"async"` | Determines which MetaTrader variant is used |
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#### `__getstate__()`
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Removes the `mt5` attribute before pickling to avoid serialization issues.
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