Completed
Pull Request — master (#858)
by Eddie
02:03
created

tests.utils.DailyBarWriterFromDataFrames   A

Complexity

Total Complexity 9

Size/Duplication

Total Lines 34
Duplicated Lines 0 %
Metric Value
dl 0
loc 34
rs 10
wmc 9

4 Methods

Rating   Name   Duplication   Size   Complexity  
A gen_tables() 0 3 2
A __init__() 0 2 1
A check_uint_safe() 0 5 2
A to_uint32() 0 12 4
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from numpy import (
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    float64,
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    uint32
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)
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from bcolz import ctable
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from zipline.data.us_equity_pricing import (
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    BcolzDailyBarWriter,
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    OHLC,
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    UINT32_MAX
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)
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class DailyBarWriterFromDataFrames(BcolzDailyBarWriter):
0 ignored issues
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Duplication introduced by
This code seems to be duplicated in your project.

Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.

You can also find more detailed suggestions in the “Code” section of your repository.

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    _csv_dtypes = {
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        'open': float64,
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        'high': float64,
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        'low': float64,
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        'close': float64,
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        'volume': float64,
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    }
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    def __init__(self, asset_map):
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        self._asset_map = asset_map
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    def gen_tables(self, assets):
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        for asset in assets:
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            yield asset, ctable.fromdataframe(assets[asset])
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    def to_uint32(self, array, colname):
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        arrmax = array.max()
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        if colname in OHLC:
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            self.check_uint_safe(arrmax * 1000, colname)
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            return (array * 1000).astype(uint32)
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        elif colname == 'volume':
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            self.check_uint_safe(arrmax, colname)
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            return array.astype(uint32)
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        elif colname == 'day':
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            nanos_per_second = (1000 * 1000 * 1000)
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            self.check_uint_safe(arrmax.view(int) / nanos_per_second, colname)
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            return (array.view(int) / nanos_per_second).astype(uint32)
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    @staticmethod
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    def check_uint_safe(value, colname):
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        if value >= UINT32_MAX:
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            raise ValueError(
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                "Value %s from column '%s' is too large" % (value, colname)
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            )
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