一种可能的解决方案是转换DatetimeIndex
为string
s:
level0 = df.index.get_level_values(0)
level1 = df.index.get_level_values(1).strftime('%Y-%m-%d')
mux = pd.MultiIndex.from_arrays([level0, level1], names=df.index.names)
df = df.set_index(mux) \
.style\
.format({'volatility_5': '{:.1}'})\
.bar(subset=['volatility_5'])
样品:
rng = pd.date_range('2017-04-03', periods=5)
df = pd.DataFrame({'date': rng, 'volatility_5': np.arange(5) * 10.293, 'ticker':['TBGI'] * 5}).set_index(['ticker','date'])
level0 = df.index.get_level_values(0)
level1 = df.index.get_level_values(1).strftime('%Y-%m-%d')
mux = pd.MultiIndex.from_arrays([level0, level1], names=df.index.names)
df = df.set_index(mux) \
.style\
.format({'volatility_5': '{:.1}'})\
.bar(subset=['volatility_5'])