2019-04-07 07:02:20 +00:00
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# ETH 2.0 config helpers
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`preset_loader`: A util to load constants-presets with.
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See [Constants-presets documentation](../../configs/constants_presets/README.md).
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Usage:
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```python
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configs_path = 'configs/'
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...
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import preset_loader
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from eth2spec.phase0 import spec
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2019-04-15 13:32:51 +00:00
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my_presets = preset_loader.load_presets(configs_path, 'mainnet')
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2019-04-07 07:02:20 +00:00
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spec.apply_constants_preset(my_presets)
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```
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WARNING: this overwrites globals, make sure to prevent accidental collisions with other usage of the same imported specs package.
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