[Python] pygraphviz 설치 오류 해결
CentOS 기준, 다음과 같은 오류가 나왔을 때 해결방법 subprocess.CalledProcessError: Command '['pkg-config', '--libs-only-L', 'libcgraph']' returned non-zero exit status 1. ERROR: Command errored out with exit status 1: /usr/bin/python3 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-1meqr4hy/pygraphviz_1dd95962042b4dada13e5f3e5ee3a3f0/setup.py'"'"'; __file__='"'"'/tmp/pip-install-1meqr4..