Develop Reference

Error with installing scrapy : exit 1 error

This is the error i get. it was working fine before, then i reinstalled python(i have added it to the system variables) and installed vscode if thats relevant.but even with windows terminal i get the same error. I did download the c++ with tools, followed the link and downloaded and installed it.
----------------------------------------
ERROR: Command errored out with exit status 1: 'c:\users\chaitali\appdata\local\programs\python\python39\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\Chaitali\\AppData\\Local\\Temp\\pip-install-3h22t0nk\\twisted\\setup.py'"'"'; __file__='"'"'C:\\Users\\Chaitali\\AppData\\Local\\Temp\\pip-install-3h22t0nk\\twisted\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\Chaitali\AppData\Local\Temp\pip-record-ttosnncb\install-record.txt' --single-version-externally-managed --compile --install-headers 'c:\users\chaitali\appdata\local\programs\python\python39\Include\Twisted' Check the logs for full command output.

Try to install Twisted manually:
Download your version from this Python Extension Packages website and install it using (if you have Python 3.9 and win32 platform):
pip3 install Twisted‑20.3.0‑cp39‑cp39‑win32.whl
After that you'll be able to install Scrapy using:
pip3 install scrapy

Can't install Grakn Python client: ERROR: Command errored out with exit status 1

I am installing the latest Grakn client python with this command:
pip3 install grakn-client
However after a while during the install I get this error:
ERROR: Command errored out with exit status 1: /Library/Frameworks/Python.framework/Versions/3.8/bin/python3.8 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/j4/85rb7q1n55l950cyxc5h57n80000gn/T/pip-install-jx_f2vss/grpcio/setup.py'"'"'; file='"'"'/private/var/folders/j4/85rb7q1n55l950cyxc5h57n80000gn/T/pip-install-jx_f2vss/grpcio/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(file);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, file, '"'"'exec'"'"'))' install --record /private/var/folders/j4/85rb7q1n55l950cyxc5h57n80000gn/T/pip-record-yi2uyn5w/install-record.txt --single-version-externally-managed --compile --install-headers /Library/Frameworks/Python.framework/Versions/3.8/include/python3.8/grpcio Check the logs for full command output.
I am using Python 3.8 and Grakn 1.8.3

For mac m1 setting variables worked for me, Used the following command:
CFLAGS="-I /opt/homebrew/opt/openssl/include" LDFLAGS="-L /opt/homebrew/opt/openssl/lib" GRPC_PYTHON_BUILD_SYSTEM_OPENSSL=1 GRPC_PYTHON_BUILD_SYSTEM_ZLIB=1 pip pip3 install grakn-client

I think there's a problem using the Grakn Python client 1.8.1 with Python 3.8.x, so please downgrade your Python to 3.7 or lower for now - this issue should be fixed soon.

imagecodecs python library won't install

I was trying to install the python scikit-image library using pip on a Jetson Xavier, and I got an extremely long error message indicating that it had failed to build the wheel for the "imagecodecs" library. I tried to install imagecodecs by itself and received a similar error message.
After some looking around, I found this question, and the error is identical to my own. However, the solution of updating pip did not fix the issue.
Error Message:
ERROR: Command errored out with exit status 1:
command: /usr/bin/python3 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-iu5szk39/imagecodecs/setup.py'"'"'; __file__='"'"'/tmp/pip-install-iu5szk39/imagecodecs/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d /tmp/pip-wheel-5h3fo15u
cwd: /tmp/pip-install-iu5szk39/imagecodecs/
...
At top level:
imagecodecs/_tiff.c:10261:47: warning: ‘__pyx_f_11imagecodecs_5_tiff_memtif_new’ defined but not used [-Wunused-function]
static __pyx_t_11imagecodecs_5_tiff_memtif_t *__pyx_f_11imagecodecs_5_tiff_memtif_new(toff_t __pyx_v_size, toff_t __pyx_v_inc) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
error: command 'aarch64-linux-gnu-gcc' failed with exit status 1
----------------------------------------
ERROR: Failed building wheel for imagecodecs
Running setup.py clean for imagecodecs
Failed to build imagecodecs
Installing collected packages: imagecodecs
Running setup.py install for imagecodecs ... error
ERROR: Command errored out with exit status 1:
command: /usr/bin/python3 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-iu5szk39/imagecodecs/setup.py'"'"'; __file__='"'"'/tmp/pip-install-iu5szk39/imagecodecs/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /tmp/pip-record-ttclns6b/install-record.txt --single-version-externally-managed --compile --install-headers /usr/local/include/python3.6/imagecodecs
cwd: /tmp/pip-install-iu5szk39/imagecodecs/
...
At top level:
imagecodecs/_tiff.c:10261:47: warning: ‘__pyx_f_11imagecodecs_5_tiff_memtif_new’ defined but not used [-Wunused-function]
static __pyx_t_11imagecodecs_5_tiff_memtif_t *__pyx_f_11imagecodecs_5_tiff_memtif_new(toff_t __pyx_v_size, toff_t __pyx_v_inc) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
error: command 'aarch64-linux-gnu-gcc' failed with 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-iu5szk39/imagecodecs/setup.py'"'"'; __file__='"'"'/tmp/pip-install-iu5szk39/imagecodecs/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /tmp/pip-record-ttclns6b/install-record.txt --single-version-externally-managed --compile --install-headers /usr/local/include/python3.6/imagecodecs Check the logs for full command output.

Try upgrading pip using this command.
sudo -H pip3 install --upgrade pip
sudo -H pip2 install --upgrade pip
pip should now be on the latest version.
$ pip3 --version
pip 20.1.1 from ...
Then install using pip3
pip3 install scikit-image

Pip3 can't install face_recognition on macOS

On macOS I ran this command in Terminal:
sudo pip3 install face_recognition
It started installing and then threw this error:
ERROR: Command errored out with exit status 1:
/Library/Frameworks/Python.framework/Versions/3.8/bin/python3.8 -u -c
'import sys, setuptools, tokenize; sys.argv[0] =
'"'"'/private/tmp/pip-install-75ks5d9l/dlib/setup.py'"'"';
file='"'"'/private/tmp/pip-install-75ks5d9l/dlib/setup.py'"'"';f=getattr(tokenize,
'"'"'open'"'"', open)(file);code=f.read().replace('"'"'\r\n'"'"',
'"'"'\n'"'"');f.close();exec(compile(code, file, '"'"'exec'"'"'))'
install --record /private/tmp/pip-record-bze0mci9/install-record.txt
--single-version-externally-managed --compile --install-headers /Library/Frameworks/Python.framework/Versions/3.8/include/python3.8/dlib
Check the logs for full command output.
I read a suggestion about installing dlib first which also threw an error. How can I fix this?

First install cmake using following command:
pip3 install cmake

How to point pip to psycopg2 package?

I am trying to install a package which needs psycopg2 as a dependency, so I installed psycopg2-binary using pip install psycopg2-binary but when I try to pip install django-tenant-schemas I get this error:
In file included from psycopg/psycopgmodule.c:27:0:
./psycopg/psycopg.h:34:10: fatal error: Python.h: No such file or directory
#include <Python.h>
^~~~~~~~~~
compilation terminated.
You may install a binary package by installing 'psycopg2-binary' from PyPI.
If you want to install psycopg2 from source, please install the packages required for the build and try again.
For further information please check the 'doc/src/install.rst' file (also at <http://initd.org/psycopg/docs/install.html>).
error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
ERROR: Command errored out with exit status 1:
/home/david/PycharmProjects/clearpath/venv/bin/python -u
-c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-ckbbq00w/psycopg2/setup.py'"'"'; __file__='"'"'/tmp/pip-install-ckbbq00w/psycopg2/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install
--record /tmp/pip-record-pi6j7x5l/install-record.txt
--single-version-externally-managed
--compile
--install-headers /home/david/PycharmProjects/clearpath/venv/include/site/python3.7/psycopg2 Check the logs for full command output.
When I go into my projects (using PyCharm) repo settings I can see psycopg2-binary is installed. I assume this has something to do with the PATH but I can't seem to figure out how to solve the issue.
which psql: /usr/bin/psql
which pg_config: /usr/bin/pg_config
I am not comfortable doing much in the Environment variables as I really don't want to break something.

It seems that you try to install pscopg2, and it may cause problem if psycopg2-binary is already installed
Here are your logs on several lines:
ERROR: Command errored out with exit status 1:
/home/david/PycharmProjects/clearpath/venv/bin/python -u
-c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-ckbbq00w/psycopg2/setup.py'"'"'; __file__='"'"'/tmp/pip-install-ckbbq00w/psycopg2/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install
--record /tmp/pip-record-pi6j7x5l/install-record.txt
--single-version-externally-managed
--compile
--install-headers /home/david/PycharmProjects/clearpath/venv/include/site/python3.7/psycopg2 Check the logs for full command output.
I would try to uninstall psycopg2-binary and then reinstall django-tenant-schemas

The issue seemed to be a bad install of libpq-fe-h that was fixed using a reinstall. Question was solved here