Python: multiple installations - python

I was successfully using python in my programs and importing necessary modules including MySQL. However, to get IDLE on my computer I downloaded a new copy of python. I'm really not sure what I did or what happened but when I try to run a program now that uses MySQL I get the following error:
Traceback (most recent call last):
File "MyFile.py", line 11, in <module>
import MySQLdb
File "/Library/Python/2.7/site-packages/MySQL_python-1.2.4b4-py2.7-macosx-10.8-intel.egg/MySQLdb/__init__.py", line 19, in <module>
import _mysql
ImportError: dlopen(/Library/Python/2.7/site-packages/MySQL_python-1.2.4b4-py2.7-macosx-10.8-intel.egg/_mysql.so, 2): Symbol not found: _mysql_affected_rows
Referenced from: /Library/Python/2.7/site-packages/MySQL_python-1.2.4b4-py2.7-macosx-10.8-intel.egg/_mysql.so
Expected in: flat namespace
in /Library/Python/2.7/site-packages/MySQL_python-1.2.4b4-py2.7-macosx-10.8-intel.egg/_mysql.so
any ideas on how to fix this?

Actually I fixed the problem by reinstalling MySQLdb following the step found here. I'm not sure how well this will work for additional modules though

Related

Errors importing pyodbc

My background is Java/C++ and I'm very new to python. I'm trying to import pyodbc to my project which works alright if I do it via command line.
import odbc
However, when I try to do the same in pydev/eclipse, i get the following error which I cannot find a solution to. I suspect this may have something to do with Eclipse setup
Traceback (most recent call last):
File "C:\Users\a\workspace\TestPyProject\src\helloworld.py", line 2, in <module>
import pyodbc
File "C:\Users\a\AppData\Local\Continuum\Anaconda3\Lib\site-packages\sqlalchemy\dialects\mssql\pyodbc.py", line 105, in <module>
from .base import MSExecutionContext, MSDialect, VARBINARY
ImportError: attempted relative import with no known parent package
I'm really stuck here and any hints will be appreciated!
An incorrect library was imported into the External Libraries list of the project. After fixing it, the import is working.

error related to sqlalchemy in python

I am trying to compile a model writte in fortran called pywofost. I followed the steps of compiling the model. however, I receive the following error related to sqlalchemy.exceptions. sqlalchemy version is '1.0.12'. the error message is as follows:
command
import pywofost
error
/usr/lib/python2.7/dist-packages/pkg_resources.py:1031: UserWarning: /home/omar/.python-eggs is writable by group/others and vulnerable to attack when used with get_resource_filename. Consider a more secure location (set with .set_extraction_path or the PYTHON_EGG_CACHE environment variable).
warnings.warn(msg, UserWarning)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/omar/pywofost/pywofost.py", line 16, in <module>
from sqlalchemy.exceptions import *
ImportError: No module named exceptions
That's because there is no module in sqlalchemy named exceptions as of version 1.0.12. If you were depending on a third party module it looks like they have a bug in their code
There is sqlalchemy.exc or sqlalchemy.orm.exc if you want to import exceptions from there though. Maybe you can just modify the pywofost code quickly and continue your work?
the problem was solved by using older version of sqlalchemy

Python can't load libc when importing xfsm module

I'm trying to write Python code to manipulate Xerox FST files, and I've installed the Python bindings for libxfsm and the XFSM library available through http://fsmbook.com. I'm running 64-bit Ubuntu. The installation goes fine, but when I try to import the xfsm module, I get this error:
>>> import xfsm
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/lib/python2.7/dist-packages/xfsm/__init__.py", line
30, in <module>
import xfsm.errors # So error handler gets installed
File "/usr/local/lib/python2.7/dist-packages/xfsm/errors.py", line
8, in <module>
from xfsm.utils import *
File "/usr/local/lib/python2.7/dist-packages/xfsm/utils.py", line
39, in <module>
libc = cfsm.load_library("c")
File "/usr/local/lib/python2.7/dist-packages/xfsm/cfsm_api.py", line
366, in l oad_library
raise ImportError("%s not found." % libname)
ImportError: c not found.
Inspecting the source code for the Python interface, it looks like it is trying and failing to find libc, and failing, but I am at a loss on how to fix that.
Has anybody else gotten the Python-XFST interface working, or have any idea what's going wrong and how to fix it?
I had same problem on 64-bit Ubuntu 14.04. The problem is it can't find libc. In my case libc on my OS is name libc.so.6(I don't know why, I am new on Ubuntu). But the Python-XFST doesn't recognize it (Detail your can refer to source file)
My solution is simple, just modify xfsm/utils.py file in
**Line 39** : libc = cfsm.load_library("c")
to
**Line 39** : libc = cfsm.load_library("libc.so.6")
Remember to add the path to libc.so.6 in env.

Importerror with Python Buffer Library

I downloaded this library: https://github.com/bufferapp/buffer-python
Ran the setup.py install, and then tried to run some code using the newly installed library.
What happens though is I get this error:
Traceback (most recent call last):
File "twitter-quote-bot.py", line 14, in <module>
from buffpy.managers.profiles import Profiles
ImportError: No module named managers.profiles
The only way I've found to fix it is to move my program (twitter-quote-bot) into the downloaded folder from Buffer and run it there.
Did I do something wrong in the installation? It seems like I should be able to do these imports globally.
Thanks in advance!

Import error in Python: Polygon

I installed this library called Polygon, in Python 2.7.3. But, each time I import it I get the next error message :
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "Polygon/__init__.py", line 5, in <module>
from Polygon.cPolygon import *
ImportError: No module named cPolygon
I have no idea about what could be going wrong. And also, I have already tried to contact the original author of this on his personal webpage.
but he hasn't replied though :( I wonder if someone can help me with this issue please.
It sounds like you didn't in fact install it, but instead just copied it to your working directory. As always, run setup.py with the appropriate arguments to install.
This error can happen if you try to run python from inside the directory you used to install Polygon. Move to a different directory and try again.

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