install error

[W-Lawless]

Hi guys, trying to use your template project to learn how to create a simple sandbox, I'm getting this error after running

pip install -r -requirements.txt

` ERROR: Command errored out with exit status 1:
command: ~/flaskPython/env/bin/python2.7 -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/5j/b27k95js4rg4g4byh2glxhwc0000gn/T/pip-install-QYde2H/psycopg2/setup.py'"'"'; file='"'"'/private/var/folders/5j/b27k95js4rg4g4byh2glxhwc0000gn/T/pip-install-QYde2H/psycopg2/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(file);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, file, '"'"'exec'"'"'))' egg_info --egg-base /private/var/folders/5j/b27k95js4rg4g4byh2glxhwc0000gn/T/pip-install-QYde2H/psycopg2/pip-egg-info
cwd: /private/var/folders/5j/b27k95js4rg4g4byh2glxhwc0000gn/T/pip-install-QYde2H/psycopg2/
Complete output (23 lines):
running egg_info
creating /private/var/folders/5j/b27k95js4rg4g4byh2glxhwc0000gn/T/pip-install-QYde2H/psycopg2/pip-egg-info/psycopg2.egg-info
writing /private/var/folders/5j/b27k95js4rg4g4byh2glxhwc0000gn/T/pip-install-QYde2H/psycopg2/pip-egg-info/psycopg2.egg-info/PKG-INFO
writing top-level names to /private/var/folders/5j/b27k95js4rg4g4byh2glxhwc0000gn/T/pip-install-QYde2H/psycopg2/pip-egg-info/psycopg2.egg-info/top_level.txt
writing dependency_links to /private/var/folders/5j/b27k95js4rg4g4byh2glxhwc0000gn/T/pip-install-QYde2H/psycopg2/pip-egg-info/psycopg2.egg-info/dependency_links.txt
writing manifest file '/private/var/folders/5j/b27k95js4rg4g4byh2glxhwc0000gn/T/pip-install-QYde2H/psycopg2/pip-egg-info/psycopg2.egg-info/SOURCES.txt'

Error: pg_config executable not found.

pg_config is required to build psycopg2 from source.  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'.

If you prefer to avoid building psycopg2 from source, please install the PyPI
'psycopg2-binary' package instead.

For further information please check the 'doc/src/install.rst' file (also at
<http://initd.org/psycopg/docs/install.html>).

----------------------------------------

ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.`

[Naveenkhasyap]

Install libpq-dev using this cmd this should fix the issue , rerun the pip install requirements cmd once you do this . sudo apt-get install libpq-dev

[abhisuri97]

Following up: Is this fixed?

[W-Lawless]

I'm using Mac OS -- I used homebrew to install libpq package

`==> libpq
libpq is keg-only, which means it was not symlinked into /usr/local,
because conflicts with postgres formula.

If you need to have libpq first in your PATH run:
echo 'export PATH="/usr/local/opt/libpq/bin:$PATH"' >> ~/.bash_profile

For compilers to find libpq you may need to set:
export LDFLAGS="-L/usr/local/opt/libpq/lib"
export CPPFLAGS="-I/usr/local/opt/libpq/include"
`

This did fix error in OP; but new issue arises after pip install -r requirements.txt

ERROR:root:code for hash md5 was not found. Traceback (most recent call last): File "/usr/local/Cellar/python@2/2.7.14_3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/hashlib.py", line 147, in <module> globals()[__func_name] = __get_hash(__func_name) File "/usr/local/Cellar/python@2/2.7.14_3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/hashlib.py", line 97, in __get_builtin_constructor raise ValueError('unsupported hash type ' + name) ValueError: unsupported hash type md5 ERROR:root:code for hash sha1 was not found. Traceback (most recent call last): File "/usr/local/Cellar/python@2/2.7.14_3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/hashlib.py", line 147, in <module> globals()[__func_name] = __get_hash(__func_name) File "/usr/local/Cellar/python@2/2.7.14_3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/hashlib.py", line 97, in __get_builtin_constructor raise ValueError('unsupported hash type ' + name) ValueError: unsupported hash type sha1 ERROR:root:code for hash sha224 was not found. Traceback (most recent call last): File "/usr/local/Cellar/python@2/2.7.14_3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/hashlib.py", line 147, in <module> globals()[__func_name] = __get_hash(__func_name) File "/usr/local/Cellar/python@2/2.7.14_3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/hashlib.py", line 97, in __get_builtin_constructor raise ValueError('unsupported hash type ' + name) ValueError: unsupported hash type sha224 ERROR:root:code for hash sha256 was not found. Traceback (most recent call last): File "/usr/local/Cellar/python@2/2.7.14_3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/hashlib.py", line 147, in <module> globals()[__func_name] = __get_hash(__func_name) File "/usr/local/Cellar/python@2/2.7.14_3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/hashlib.py", line 97, in __get_builtin_constructor raise ValueError('unsupported hash type ' + name) ValueError: unsupported hash type sha256 ERROR:root:code for hash sha384 was not found. Traceback (most recent call last): File "/usr/local/Cellar/python@2/2.7.14_3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/hashlib.py", line 147, in <module> globals()[__func_name] = __get_hash(__func_name) File "/usr/local/Cellar/python@2/2.7.14_3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/hashlib.py", line 97, in __get_builtin_constructor raise ValueError('unsupported hash type ' + name) ValueError: unsupported hash type sha384 ERROR:root:code for hash sha512 was not found. Traceback (most recent call last): File "/usr/local/Cellar/python@2/2.7.14_3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/hashlib.py", line 147, in <module> globals()[__func_name] = __get_hash(__func_name) File "/usr/local/Cellar/python@2/2.7.14_3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/hashlib.py", line 97, in __get_builtin_constructor raise ValueError('unsupported hash type ' + name) ValueError: unsupported hash type sha512 Traceback (most recent call last): File "/usr/local/bin/pip", line 7, in <module> from pip._internal.main import main File "/usr/local/lib/python2.7/site-packages/pip/_internal/main.py", line 13, in <module> from pip._internal.cli.autocompletion import autocomplete File "/usr/local/lib/python2.7/site-packages/pip/_internal/cli/autocompletion.py", line 11, in <module> from pip._internal.cli.main_parser import create_main_parser File "/usr/local/lib/python2.7/site-packages/pip/_internal/cli/main_parser.py", line 7, in <module> from pip._internal.cli import cmdoptions File "/usr/local/lib/python2.7/site-packages/pip/_internal/cli/cmdoptions.py", line 25, in <module> from pip._internal.locations import USER_CACHE_DIR, get_src_prefix File "/usr/local/lib/python2.7/site-packages/pip/_internal/locations.py", line 18, in <module> from pip._internal.utils import appdirs File "/usr/local/lib/python2.7/site-packages/pip/_internal/utils/appdirs.py", line 16, in <module> from pip._internal.utils.compat import WINDOWS, expanduser File "/usr/local/lib/python2.7/site-packages/pip/_internal/utils/compat.py", line 17, in <module> from pip._vendor.urllib3.util import IS_PYOPENSSL File "/usr/local/lib/python2.7/site-packages/pip/_vendor/urllib3/__init__.py", line 7, in <module> from .connectionpool import HTTPConnectionPool, HTTPSConnectionPool, connection_from_url File "/usr/local/lib/python2.7/site-packages/pip/_vendor/urllib3/connectionpool.py", line 29, in <module> from .connection import ( File "/usr/local/lib/python2.7/site-packages/pip/_vendor/urllib3/connection.py", line 40, in <module> from .util.ssl_ import ( File "/usr/local/lib/python2.7/site-packages/pip/_vendor/urllib3/util/__init__.py", line 7, in <module> from .ssl_ import ( File "/usr/local/lib/python2.7/site-packages/pip/_vendor/urllib3/util/ssl_.py", line 8, in <module> from hashlib import md5, sha1, sha256 ImportError: cannot import name md5

Is this library built for linux ? anyway to get working on mac ?

[abhisuri97]

Yeah that library is built for linux. Try doing brew install postgresql

[abhisuri97]

Closing unless there are other issues. Feel free to reopen as you see fit.