我一直在关注文档，直到我安装了 requirements.txt 文件。尝试安装第 6 行“psycopg2==2.5.3”时总是失败。这是消息——
Downloading/unpacking psycopg2==2.5.3 (from -r requirements.txt (line 6))
Downloading psycopg2-2.5.3.tar.gz (690kB): 690kB downloaded
Running setup.py (path:/Users/pimpc/Sites/python/herokudemo/python-getting-started/venv/build/psycopg2/setup.py) egg_info for package psycopg2
Error: pg_config executable not found.
Please add the directory containing pg_config to the PATH
or specify the full executable path with the option:
python setup.py build_ext --pg-config /path/to/pg_config build ...
or with the pg_config option in 'setup.cfg'.
Complete output from command python setup.py egg_info:
running egg_info
creating pip-egg-info/psycopg2.egg-info
writing pip-egg-info/psycopg2.egg-info/PKG-INFO
writing top-level names to
pip-egg-info/psycopg2.egg-info/top_level.txt
writing …