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Trouble with xattr, "No module named 'pkg_resources' "

I've been on MacOS using Python for a while and lately, when trying to execute MacOS's xattr, such as xattr -cr <file> I'm always getting this error:
Traceback (most recent call last):
File "/usr/bin/xattr", line 8, in <module>
from pkg_resources import load_entry_point
ImportError: No module named pkg_resources
I've done a lot of research and tried reinstalling setuptools and pip, but I'm still getting the same error. I'd appreciate if anyone could lead me to a solution. Thanks in advance.

ImportError: Undefined Symbol when importing python module 'pyfftw'

I want to use pyfftw module and I install it using sudo apt-get install python-fftw. The FFTW module is already installed. However, when I try to import pyfftw this error happens:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python2.7/dist-packages/pyfftw/__init__.py", line 16, in <module>
from .pyfftw import (
ImportError: /usr/lib/python2.7/dist-packages/pyfftw/pyfftw.arm-linux-gnueabihf.so: undefined symbol: fftwl_plan_with_nthreads
Anyone knows how to troubleshoot this? For additional information, my system architecture is armv7l (I am running the program in odroid), my OS is Ubuntu and I use python 2.7.12.
Thank you.

Import cv2 error python

Whenever I attempt to import cv2, I always get this error
import cv2
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: /usr/lib/libgdal.so.1: undefined symbol: sqlite3_column_table_name
I've already created a symbolic link and I have also already installed the libgdal-dev module from the Ubuntu Software Center. Any ideas? Thanks!
EDIT: I did as pbu suggested, and the link was created without fail for the most part. But now, this error comes up:
import cv2
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: /usr/local/lib/libgdal.so.1: cannot read file data: Is a directory
Thank you all for your suggestions!

was happen same with me , resolved after :
GDAL 2.1 is available for Ubuntu 16.04 from the UbuntuGIS-Unstable PPA
sudo apt install gdal-bin python-gdal python3-gdal

Not able to import mysqldb in python on mac

I am new to mac and to python. I have installed mysqldb for python mac. But when i try to import it, this is the error i am getting :
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/Library/Python/2.6/site-packages/MySQLdb/__init__.py", line 19, in <module>
import _mysql
ImportError: dlopen(/Library/Python/2.6/site-packages/_mysql.so, 2): Symbol not found: _strnlen
Referenced from: /usr/lib/libmysqlclient.18.dylib
Expected in: /usr/lib/libSystem.B.dylib
in /usr/lib/libmysqlclient.18.dylib
Why am i getting this error? How do i resolve it? I have tried a crazy number of answers posted here on SO but nothing seems to work. What should i do to resolve this error?
Thanks.

Did you use sudo when you installed?
sudo pip install mysql-python
Then add this line to your ~/.bash_profile
export DYLD_LIBRARY_PATH=/usr/local/mysql/lib/

pySerial not working on Python3.2.2

I installed the 32 bit version of Python 3.2.2 and want to get the pySerial package to work. I most definitely have the pyWin32 package install but still when I try to import serial it gives me this error
>>> import serial
Traceback (most recent call last):
File "<interactive input>", line 1, in <module>
File "C:\Python32\lib\site-packages\serial\__init__.py", line 19, in <module>
from serialwin32 import *
ImportError: No module named serialwin32
>>>
Any help?

Search around in your C:/Python32/Lib/site-packages/serial/. See if you can find a file named serialwin32. If not, you should try uninstalling pywin32 and reinstalling it.