change matplotlib font manager logging level #158
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The default log level of matplotlib.font_manager is WARNING. When enumerate all fonts here
all_fonts = [f.name for f in FontManager().ttflist], it prints a lot of warnings that some font files can't beloaded correctly. This should be normal as there are a lot of font files installed on the system. Without
changing the global logging level, I use
LoggingContextto temporarily silence these warnings.add Source Han Sans CN 思源黑体
as target Chinese fonts.