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"""Holder |
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A class to represent a owner of subjects. |
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https://github.com/rochars/trade |
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License: MIT |
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Copyright (c) 2015-2018 Rafael da Silva Rocha |
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Permission is hereby granted, free of charge, to any person obtaining a copy |
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of this software and associated documentation files (the "Software"), to deal |
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in the Software without restriction, including without limitation the rights |
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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copies of the Software, and to permit persons to whom the Software is |
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furnished to do so, subject to the following conditions: |
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The above copyright notice and this permission notice shall be included in |
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all copies or substantial portions of the Software. |
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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THE SOFTWARE. |
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""" |
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class Holder(object): |
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"""A class to represent a owner of subjects. |
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A Holder object is created with a initial state. The state of Holder |
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is then updated by Occurrence objects by calling Holder.trade(occurrence). |
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trade apps should define the Holder.state signature according to |
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their needs. |
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Classes that inherit from Occurrence may add and manipulate new |
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items on the Holder.state dictionary. |
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Attributes: |
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state: A dict representing the state of the Holder. |
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The example implementation uses the following signature: |
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{ |
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"SUBJECT SYMBOL": { |
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"quantity": 0, |
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"value": 0 |
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}, |
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... |
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} |
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""" |
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def __init__(self, state=None): |
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self.state = {} |
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if state: |
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self.state = state |
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def trade(self, occurrence): |
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"""Update the state of the Holder with an occurrence.""" |
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occurrence.update_holder(self) |
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rochars /
trade
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