Skip to main content

Kepler Echo

Python License

向量化回测框架。

安装

pip install kepler-echo

快速开始

import pandas as pd
from kepler.echo import Strategy

# 价格数据 (MultiIndex: date, item)
price_data = []
for date in ['2020-01-01', '2020-01-02']:
    for stock, o, c in [('A', 10, 10.5), ('B', 20, 20.5), ('C', 30, 30.5)]:
        price_data.append({'date': date, 'item': stock, 'open': o, 'close': c})
price = pd.DataFrame(price_data).set_index(['date', 'item'])

# 信号
signal = pd.DataFrame({
    'A': [0.5, 0.6],
    'B': [-0.3, -0.2],
}, index=pd.date_range('2020-01-01', periods=2))

# 回测
result = (
    Strategy(begin="2020-01-01", end="2020-12-31")
    .data(price)
    .signal(signal)
    .commission((0.001, 0.001))
    .run()
)

print(result.nav)

API

Strategy

Strategy(
    begin="2001-01-01",        # 开始日期
    end="今天",                 # 结束日期
    matching="next_bar",       # 撮合: next_bar / current_bar
    benchmark="",              # 基准 (数据中的某列)
    commission=(0, 0),         # 手续费 (做多, 做空)
)

方法

方法 说明
.data(df, exec_price='open') 添加价格数据
.signal(df) 添加信号
.commission((long, short)) 设置手续费
.benchmark(symbol) 设置基准
.run() 运行,返回结果
.plot(log=True) 绘图

数据格式

支持两种格式:

1. pandas DataFrame (MultiIndex)

index 为 ['date', 'item'],columns 必须包含 close 和 exec_price 指定的列:

                      close  open
date       item
2020-01-01 A        10.5    10
           B        20.5    20
2020-01-02 A        11.0    10.5
           B        21.0    20.5

2. xarray DataArray

三维数组,维度为 (date, item, feature):

import xarray as xr
import numpy as np

# 创建 xarray DataArray
dates = pd.date_range('2020-01-01', periods=2)
items = ['A', 'B']
features = ['open', 'close']

data = xr.DataArray(
    np.random.randn(2, 2, 2),
    dims=['date', 'item', 'feature'],
    coords={'date': dates, 'item': items, 'feature': features}
)

# 使用
result = Strategy().data(data, exec_price='open').signal(signal).run()

信号格式

宽格式:

signal = pd.DataFrame({
    '000001.SZ': [0.5, 0.6],
    '000002.SZ': [-0.3, -0.2],
}, index=pd.date_range('2020-01-01', periods=2))

长格式:

signal = pd.DataFrame({
    'date': ['2020-01-01', '2020-01-01'],
    'stockid': ['000001.SZ', '000002.SZ'],
    'weight': [0.5, -0.3]
})

结果

result.nav      # 净值 DataFrame
result.hold     # 最终持仓
result.signal   # 原始信号
result.stats    # 统计 (turnover)

nav 列说明:

列名 说明
strategy 策略净值
{benchmark} 基准净值(如果设置了 benchmark)
relative 相对净值 = strategy / benchmark(如果设置了 benchmark)
drawdown 动态回撤(相对收益的回撤,或绝对收益的回撤)

撮合方式

  • next_bar: 下一根 K 线的 exec_price 价格(默认)
  • current_bar: 当前 K 线收盘价

执行价格

exec_price 参数指定 next_bar 模式下的执行价格列:

.data(price)                       # 使用开盘价(默认)
.data(price, exec_price='vwap')    # 使用 VWAP
.data(price, exec_price='close')   # 使用收盘价

许可证

GPL-3.0-or-later

Metadata

Release files for kepler.echo 0.3.1

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for kepler.echo 0.3.1
File Size Uploaded Provenance
kepler_echo-0.3.1.tar.gz 36.7 kB Without provenance Details

Built distribution (wheel)

Table of built distributions (wheels) for kepler.echo 0.3.1
File Interpreter ABI Platform
kepler_echo-0.3.1-py3-none-any.whl Python 3 none any Details

Total release size: 67.9 kB

Release files / kepler_echo-0.3.1.tar.gz

Download URL kepler_echo-0.3.1.tar.gz
Size 36.7 kB
Tags Source
SHA-256 checksum
How to use checksums
d5bfc4fff68a8b18970b94360823c281ef80c65226797cef236e636192a2112b
BLAKE2b-256 checksum
How to use checksums
93cfd1df014854a0ed9f3345becb579b98abbe305c96b49c442eaf0e6dc8081c
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
No
Uploaded via twine/6.2.0 CPython/3.11.15

Release files / kepler_echo-0.3.1-py3-none-any.whl

Download URL kepler_echo-0.3.1-py3-none-any.whl
Size 31.3 kB
Tags Python 3
SHA-256 checksum
How to use checksums
e43f80960e41e530da99bccd9b1f2121767dea1fd16400ee8e4289358a5bc205
BLAKE2b-256 checksum
How to use checksums
27bbfcd8f258b2f3b4c51195b1c2e15788c203221a2f6075e9e38145c90f12d6
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
No
Uploaded via twine/6.2.0 CPython/3.11.15

Security for kepler.echo 0.3.1

Provenance

Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.

No provenance found

None of the files in this release were uploaded with provenance metadata.

A note on package security

PyPI is a repository for distributing packages, not a service for auditing them. While third-party security researchers and our staff do their best to detect and remove malicious packages, PyPI cannot guarantee the quality, security or suitability of any given package.

To learn more about protecting yourself from malicious actors, visit our package security documentation.

Anthropic, PBC Visionary sponsor Bloomberg Visionary sponsor Hudson River Trading Visionary sponsor Meta Visionary sponsor NVIDIA Visionary sponsor Microsoft Sustainability sponsor Depot Continuous Integration AWS Cloud computing and Security Sponsor Datadog Monitoring Fastly CDN Google Download Analytics Sentry Error logging StatusPage Status page