기존
!apt-get update -qq
!apt-get install fonts-nanum* -qq
import matplotlib.pyplot as plt
import matplotlib as mpl
%matplotlib inline
plt.rcParams['axes.unicode_minus']=False
path='/usr/share/fonts/truetype/nanum/NanumGothic.ttf'
font_name=mpl.font_manager.FontProperties(fname=path).get_name()
mpl.rc('font',family=font_name)
mpl.font_manager._rebuild()
plt.title('그래프')
변경
import matplotlib.pyplot as plt
import koreanize_matplotlib
이렇게 간단한거였다니 !!