58 lines
1.0 KiB
Python
58 lines
1.0 KiB
Python
import csv
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from cofollow import consumer
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from tableformat import create_formatter
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from ticker import Ticker
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@consumer
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def to_csv(target):
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def producer():
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while True:
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yield line
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reader = csv.reader(producer())
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while True:
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line = yield
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target.send(next(reader))
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@consumer
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def create_ticker(target):
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while True:
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row = yield
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target.send(Ticker.from_row(row))
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@consumer
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def negchange(target):
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while True:
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record = yield
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if record.change < 0:
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target.send(record)
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@consumer
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def ticker(fmt, fields):
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formatter = create_formatter(fmt)
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formatter.headings(fields)
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while True:
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rec = yield
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row = [getattr(rec, name) for name in fields]
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formatter.row(row)
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if __name__ == '__main__':
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from cofollow import follow
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follow(
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'Data/stocklog.csv',
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to_csv(
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create_ticker(
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negchange(
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ticker('text', ['name', 'price', 'change'])
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)
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)
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)
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)
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