install error about flask-base

[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.