I'm using boost::python in my Visual C++ application and I have a script that wants to connect to an SQLite database and read some data from it.
In my script, I imported sqlite3 and it works fine when I run it with Python IDLE but, when it runs inside my Visual C++ application, I get an exception:
No module named _sqlite3
Can anyone tell me why it happens? What did I miss here?
Even this line in my code returns the same exception:
boost::python::object objSQLite3 = boost::python::import("sqlite3");
I finally found the problem!!!
I install the python via inno setup in silent mode. For first time since there is no python on system all libraries copy successfully But if u do it again since it try to install python again (/i), It some how mess with some library like sqlite3.
So u need change your inno setup script to reinstall the python if it exists (/a).
PS : If you have this problem and you don't use inno setup just reinstall your python to fix this problem.
Best Regards
Related
I am trying to run a script which imports all the packages required for a code in visual studio code (there is nothing else in their at the moment apart from the import statements) all packages are installed on the environment being used.
However running just the statement
It returns the error message
I have tried uninstalling and reinstalling all packages, changing to a different environment and creating a whole new azure function.
Any help would be greatly appreciated.
It seems that there is missing a sqlite3 DLL file in your anaconda path C:\Users\954198\AppData\Local\Continuum\Anaconda3\DLLs.
Meanwhile, there is an existing SO thread Unable to import sqlite3 using Anaconda Python which got the same issue with yours, please follow the answer of most voted up to add the lack sqlite dll file to fix it.
I'm afraid that your conda environment or your python environment may be broken, sqlite3 is a default package pre-installed in Python.
I'm trying to set up a roguelike Python project, but I can't seem to be able to import libtcod module into my project. This helloworld crashes, and the IDE keeps telling me that there is no module named libtcodpy.
import libtcodpy
def main():
print('Hello World!')
if __name__ == '__main__':
main()
What is the proper way to import modules into Python projects? I'm used to Java, so I was expecting something along the lines of Maven to manage the dependencies. There indeed seems to be something like that in PyCharm as well, this package manager for the venv, which from what I gather serves to isolate the project-specific stuff from the OS- or python-global stuff:
but libtcod simply isn't present in the rather exhaustive list of modules that appears after clicking on the "+" button, just some other module that has something to do with libtcod library (I guess?). Moreover, all the tutorials I found on setting libtcod up advise one to manually copy over files somewhere or run some command that I suppose does the importing somehow and other such solutions, all of which i tried and none of which worked. I don't want to pollute my project structure by using such hodgepodge ways of handling dependencies if I can at all avoid it.
Q: How do I get libtcod to work in my PyCharm project in the most clean and convention-abiding way possible?
Take a look at this github project called tcod: https://github.com/libtcod/python-tcod/blob/master/README.rst#installation
It's a python port of libtcod.
To install using pip, use the following command:
python -m pip install tcod
If you get the error "ImportError: DLL load failed: The specified module could not be found." when trying to import tcod/tdl then you may need the latest Microsoft Visual C runtime.
Blockquote
I'm having trouble importing a library called Adafruit_DHT while using the Jython interpreter. Here is what I'm doing:
Downloaded the Adafruit_DHT Library, put in on my Raspberry Pi 2, installed it with "sudo python setup.py install". When scrips using this library are executed through the normal interpreter, everything's fine.
Run my java program, which starts a Jython interpreter
First error: Adafruit_DHT module isn't found when using "import Adafruit_DHT"
Solved by adding a lot of paths to sys.path
Next error: "Exception ... File "/usr/local/lib/python2.7/dist-packages/Adafruit_DHT-1.1.0-py2.7-linux-armv7l.egg/Adafrut_DHT/common.py", line 59, in get_platform
RuntimeError: Unknown platform." Don't really get it. Apparently the library doesnt work properly when called through Jython.
Solved by nearly deleting all of "get_platform" function in common.py and replacing it by hardcoding Raspberry_Pi_2 as the used platform.
Next problem: "File "/usr/local/lib/python2.7/dist-packages/Adafruit_DHT-1.1.0-py2.7-linux-armv7l.egg/Adafrut_DHT/Raspberry_Pi_2_Driver.py", line 6, in bootstrap
ImportError: No module named Adafruit_DHT.Raspberry_Pi_2_Driver": Apparently the library itself makes use of modules. And those can't be loaded through Jython
I simply don't get what I should do to properly load and use an installed, rather complex, module like Adafruit_DHT through Jython. I mean, it works fine through the normal python interpreter, so there is no real reason why it shouldn't work through Jython.
I am a newbie to Stack Overflow (first post), but really see the use of this website.
I'm stumped. We are trying to setup IIS 7.0 to run with WinPython 2.7 on a Windows 7 machine.
I am an IIS newb, but veteran Python user. IIS 7 can NOT find a library, which python finds, and executes, perfectly when ran on it's own. When executed via IIS, the script fails with a traceback, and IIS returns the 502.2.
I found this thread http://forums.iis.net/p/1209465/2073173.aspx?HTTP+Error+502+2+Bad+Gateway+Frustrations but the advised solution is simply another troubleshooting suggestion.
I found IIS's description (http://support.microsoft.com/kb/942057) of the error helpful, but futile.
I found Python's start-up options/parameters helpful (http://docs.python.org/2/using/cmdline.html), but futile.
I found IIS's advice for configuring Python helpful (http://support.microsoft.com/kb/276494, but (questionably?) incomplete.
This thread on manually defining an alternate bin folder (http://forums.asp.net/t/1303052.aspx?Tell+IIS+to+load+dll+from+another+directory+not+Bin+web+config+) might be where my solution lies, but I don't think it is because of the fact that this all worked on 2.6 without doing that to IIS.
IIS seems to allow python to import any module that is just a python script. As soon as it gets to a *.pyd (basically just python's version of a dll file) file, it screams. I'm no pro when it comes to DLLs and windows environments, but wouldn't IIS have to have paths to a bin folder of some kind? Do I have to manually edit them, as discussed in the last link above?
ACTUAL ERROR Details below for DLL failed Load:
The Error :
" HTTP Error 502.2 - Bad Gateway The specified CGI application
misbehaved by not returning a complete set of HTTP headers. The
headers it did return are "Traceback (most recent call last): File
"\estorage.equitable.int\riskmgmt\Quants\web\LinksPage.py", line 2,
in import pyweb File
"\estorage.equitable.int\riskmgmt\Quants\Common2014\Python\pyweb__init__.py",
line 5, in from core import * File
"\estorage.equitable.int\riskmgmt\Quants\Common2014\Python\pyweb\core.py",
line 2, in from pylib import pgdb File
"\estorage.equitable.int\riskmgmt\Quants\Common2014\Python\pylib\pgdb.py",
line 8, in from scikits import timeseries as ts File
"C:\WinPython-32bit-2.7.6.2-20140401\python-2.7.6\lib\site-packages\scikits.timeseries-0.91.3-py2.7-win32.egg\scikits\timeseries__init__.py",
line 13, in import const File
"C:\WinPython-32bit-2.7.6.2-20140401\python-2.7.6\lib\site-packages\scikits.timeseries-0.91.3-py2.7-win32.egg\scikits\timeseries\const.py",
line 79, in from cseries import freq_constants ImportError:
DLL load failed: The specified module could not be found. ".
I'm confident that the python environment is configured properly, as the script runs from the same executable (python.exe) via a command line. I'm thinking that I don't have IIS configured properly, for the new Python 2.7 install. The same script worked yesterday, on IIS and python 2.6. But during our upgrade from 2.6 to 2.7, a bunch of PATH and PYTHONPATH parameters all changed, plus we went from ActivePython to WinPython. WinPython is "registered" on the machine.
What I've tried
confirming python's sys.path is as expected at run-time in both IIS and command line - it is.
using the module from python command line.
recompiling the failing module using two different compilers (ming32 and VS2008).
putting duplicates of my new 2.7 modules in the old python26 folder.
pulling out lots of hair and other hacky stuff.
My next step, is to post this same message on a python forum. If anybody can advise on a good one for python-IIS related challenges, that would be appreciated.
Please help! Thanks in advance.
I got this 502.2 error when doing a clean installation of PHP 5.5 in Windows Server 2012 R2 with IIS 8.5.
It turns out PHP is a Visual C++ application which needs the library MSVCR110.dll in order to run properly. My computer does not have Visual Studio 2012 installed and thus it does not have this file. I got my problem solved by installing the Visual C++ Redistributable Packages https://www.microsoft.com/en-us/download/details.aspx?id=30679#
(Note: jc77 is my associate, and I'm actually the OP, as this was an x-post from IIS forums.)
We solved the problem.
tl,dr; portable python + sloppy/rookie compiling = strange behaviour + frustrations.
Bottom line, compile properly. For scikits.timeseries, using ming32 everything will walk, talk, and sound like it works in Spyder.exe, but not in python.exe. You have to use VS2008, if you want it to work in both.
More Info:
Winpython (as well as others) presents itself as identical to any other python installations, if you "register" the installation. It works great, 99% of the time. We learned the hard way, that "Winpython Interpreter.exe" and "python.exe" provided in the install are in fact different. Can't explain why, but the two executables gave different behavior. We were doing all our testing in Spyder, which must use "winpython interpreter.exe". The module which IIS couldn't find, would import and run no problem in Spyder. Then, in IIS, using python.exe, the module wouldn't import. We were operating on the assumption that the IDE would use python.exe, and that the stack was identical. As, 99% of the time, they appear to be. The way we were compiling scikits worked in winpython interpreter.exe. We were making a rookie mistake when compiling scikits, but it went un-noticed because it was working fine in our IDE (Spyder).
I'm adding these keywords for others : Anybody else who receives errors like this is likely using a portable python installation AND not compiling something properly. Winpython, Portable Python, eGenix, [and possibly?] Active State and Enthought Canopy.
While trying to configure CGI to run Perl in Windows 8.1, I had HTTP Error 502.2, but then I read loste's post and solved the problem. I had previously installed both Perl64 and Strawberry Perl. Although the IIS EventHandler pointed to only the Perl64 directory, both directories appeared in my Windows PATH variable. I prefer Strawberry Perl, so I changed the EventHandler to point to the Strawberry Perl directory and deleted the paths to Perl64 from the Windows PATH variable to solve the error.
Try this
print("Content-Type: text/html\n")
print("Hello Python World!")
You must specify the type of document
When I write import MySQLdb in Eclipse using the PyDev plugin, I get an unresolved import. However, the program runs without error. I can add an annotation to get the error to go away, but what is the right way to handle this?
How can I help Eclipse know that MySQLdb is there?
It sounds like MySQLdb is somewhere on your sys.path, but not on your Eclipse project's PYTHONPATH; in other words, Eclipse thinks you're going to get an import error at runtime because you haven't fully configured it. Google seems to say that you can alter this setting in Window->Preferences->Preferences->PyDev->Python Interpreter to include the path to your MySQLdb module.
For some help figuring out where MySQLdb might be living on your system:
Open an interactive interpreter,
import MySQLdb
If that succeeds, you can get a hint from: print MySQLdb.__file__; it may be the __init__ file in the package that you need to point the path at.
cdleary above provided the reason two years ago, but this may be easier. Basically, one reinstalls the interpreter.
Select Window - > Preferences -> PyDev -> Interpreter - Python
Select the python interpreter in the upper pane
Click on Remove
Click on Auto Config
Agree to everything.
This works on Fedora 17 using the Eclipse 4.2.0 that came with the package management.
Fixed this by doing two things:
1) Added MySQLdb egg to the PYTHONPATH under Window->Preferences->Preferences->PyDev->Python Interpreter.
C:\Python26\Lib\site-packages\MySQL_python-1.2.3c1-py2.6-win32.egg
2) Close and re-open the .py file that had the red x.
Adding the egg works, but the error remains. The solution for that error can be found by adding
##UnresolvedImport
To the import statement, as in:
import web ##UnresolvedImport
Source: http://klaith.wordpress.com/2009/06/12/pydev-unresolved-import-errors/
I once had a similar problem on Windows (never encountered this on Linux though) and I discovered that I had to include the .egg directory of my library to my PYTHONPATH.
For example my PYTHONPATH (Pydev/Interpreter - Python/Libraries) included:
C:\Python26\Lib\site-packages
and I had to add:
C:\Python26\Lib\site-packages\jinja2-2.2.1-py2.6.egg
to use jinja.
This surely works I just tried it with Pmw package. Unzip package in site-packages. Then remove python interpreter from eclipse and then add it again. Your import errors shall go away. also you may want add module to forced builtins. See How do I fix PyDev "Undefined variable from import" errors? and http://pydev.org/manual_101_interpreter.html
I had a similar issue and the following is what I did to solve my issue. I have a Windows 8 Machine, Python 2.7 installed and running my stuff through eclipse.
Some Background:
When I did an easy install it tries to install MySQL-python 1.2.5 which failed with an error: Unable to find vcvarsall.bat. I did an easy_install of pip and tried the pip install which also failed with a similar error. They both reference vcvarsall.bat which is something to do with visual studio, since I don't have visual studio on my machine, it left me looking for a different solution, which I share below.
The Solution:
Reinstall python 2.7.8 from 2.7.8 from https://www.python.org/download this will add any missing registry settings, which is required by the next install.
Install 1.2.4 from http://pypi.python.org/pypi/MySQL-python/1.2.4
After I did both of those installs, I reopened eclipse and got a prompt to update the paths of eclipse which I accepted, after that I was able to query my MySQL db.
import MySQLdb
If this code show error like this:
Unresolved import: MySQLdb
you should add D:\Python27\Lib\site-packages\MySQLdb to your sys.path.
D:\Python27\Lib\site-packages\MySQLdb is this location where you install MySQLdb in your computer disk. After this step, the error will disappear.