python-mastery/Exercises/soln8_2.md

Exercise 8.2 - Solution

# ticker.py
from structure import Structure

class Ticker(Structure):
    name = String()
    price = Float()
    date = String()
    time = String()
    change = Float()
    open = Float()
    high = Float()
    low = Float()
    volume = Integer()

if __name__ == '__main__':
    from follow import follow
    import csv
    from tableformat import create_formatter, print_table

    formatter = create_formatter('text')

    lines = follow('Data/stocklog.csv')
    rows = csv.reader(lines)
    records = (Ticker.from_row(row) for row in rows)
    negative = (rec for rec in records if rec.change < 0)
    print_table(negative, ['name','price','change'], formatter)

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