save Backtrader and Pyfolio plot image 储存backtrader和pyfolio的图片

backtrader和pyfolio都移除了储存图片的参数，所以要另外修改源码。

 

1. backtrader

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1 2	img = cerebro.plot(style='line', plotdist=0.1, grid=True) img[0][0].savefig(f'data/cerebro_{sector}_{direction[0]}_{style[0]}_{date_cur}.png')

　　返回了plot实体，再储存。

 

2. pyfolio

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images = [] images.append(create_returns_tear_sheet(     returns,     positions=positions,     transactions=transactions,     live_start_date=live_start_date,     cone_std=cone_std,     benchmark_rets=benchmark_rets,     bootstrap=bootstrap,     turnover_denom=turnover_denom,     header_rows=header_rows,     set_context=set_context,     return_fig=True))   images.append(create_interesting_times_tear_sheet(returns,                                                   benchmark_rets=benchmark_rets,                                                   set_context=set_context,                                                   return_fig=True))

　　Lib\site-packages\pofolio\tears.py　　Line 201~218

Return the array of plot entities.

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images = pf.create_full_tear_sheet(returns) images[0].savefig(f'data/returns_tear_sheet_{sector}_{direction[0]}_{style[0]}_{date_cur}.png') images[1].savefig(f'data/interesting_times_tear_sheet_{sector}_{direction[0]}_{style[0]}_{date_cur}.png')

　　返回了plot实体，再储存。