importerror

问题 I have a Raspberry Pi project written in Python that uses RPi.GPIO module. All the work on the code is done on a Windows box where RPi.GPIO will not install and every time I try to run autodoc it crashes saying it cannot import RPi.GPIO. D:\cube\docs\ledcube.rst:4: WARNING: autodoc: failed to import module u'ledcube' ; the following exception was raised: Traceback (most recent call last): File "C:\Python27\lib\site-packages\sphinx-1.2b1-py2.7.egg\sphinx\ext\autodoc. py", line 326, in import

问题 After somes problems with a simple import of httplib2 (see my post here), i meet a different problem with the import of gflags. In fact, on dev server, i have an ImportError the first time that I lanch the apps. But, if i refresh the browser, the apps works ! If i looking in logs, i can see : ... ImportError: No module named gflags [App Instance] [0] [dev_appserver.py:2891] INFO "GET / HTTP/1.1" 500 - [App Instance] [0] [py_zipimport.py:148] INFO zipimporter('/usr/lib/python2.5/site-packages

问题 Using Python 2.7 I try to import graph-tool: from graph_tool.all import * Each time I execute the above command the following error is returned and Python crashes. dyld: lazy symbol binding failed: Symbol not found: __ZN5boost6python6detail11init_moduleEPKcPFvvE Referenced from: /usr/local/lib/python2.7/site-packages/graph_tool/libgraph_tool_core.so Expected in: flat namespace dyld: Symbol not found: __ZN5boost6python6detail11init_moduleEPKcPFvvE Referenced from: /usr/local/lib/python2.7/site

问题 My Python couldn't figure out the submodules when I was trying to import reportlab.graphics.shapes like this: >>> from reportlab.graphics.shapes import Drawing Traceback (most recent call last): File "<pyshell#14>", line 1, in <module> from reportlab.graphics.shapes import Drawing ImportError: No module named shapes I have copied the reportlab package to /site-packages and I can import module reportlab.graphics successfully. My Python version is 2.7.3. Could anyone help me to fix this problem

问题 So I am running Windows 8 with python 3.3 installed. I have livewires and pygame installed. But when I run the code: from livewires import games games.init(screen_width = 640, screen_height = 480, fps = 50) games.screen.mainloop() I get an error saying... ImportError: No module name 'pygame.image'. Does anyone know how to fix this? 回答1: Did you install pygame in the file directory of the python interpreter? But anyway pygame is not available for python 3.3 at the moment. If you want to use

问题 I have installed opencv 3.4.1 correctly on my system enviroment. But after I create a conda virtual environment using a yml file inlcues opencv3.2.0, it leads some problems here: Under the conda virtual env, I have to always first cd PATH_TO_VIRTUAL_ENV/lib/python3.5/site_packages such that import cv2 is correctly using the 3.2.0 version of opencv,without this step, 3.4.1 will be used. Under the conda base environment , if the PATH in ~/.bashrc is added to anaconda3, then I will under conda

问题 I'm following the tutorial here (Object Detection in Google Colab with Custom Dataset). The first line of the notebook is a git clone of the tensorflow models: !git clone --quiet https://github.com/tensorflow/models.git After, they set the PYTHONPATH variable to be sure we can import models. os.environ['PYTHONPATH'] += ':/content/models/research/:/content/models/research/slim/' If I try at this stage to import a model from nets import inception_resnet_v2 I get the error: ImportError: No

问题 I'm fairly new to cython, so I have a basic question. I'm trying to import a base class from one cython file into another cython file to define a derived class. I have the following code in a single directory called cythonTest/ : afile.pxd afile.pyx bfile.pxd bfile.pyx __init__.py setup.py afile.pxd: cdef class A: pass afile.pyx: cdef class A: def __init__(self): print("A__init__()") bfile.pxd: from afile cimport A cdef class B(A): pass bfile.pyx: cdef class B(A): def __init__(self): print "B

问题 I can import ntlk and the pos_tag in the python shell just fine like so. >>> import nltk >>> from nltk import pos_tag But when I need to write a script like import nltk from nltk import pos_tag I get a traceback error Traceback (most recent call last): File "mynltkfile.py", line 1, in <module> from nltk import pos_tag File "/Users/jacksongeller/Desktop/nltktest/mynltkfile.py", line 1, in <module> from nltk import pos_tag ImportError: cannot import name pos_tag I have already done nltk

问题 I'm trying to make migrations on my Flask api based on SQLite db. Here is my project structure ├── app.py ├── blueprints ├── conf.py ├── db.sqlite ├── __init__.py ├── migrations ├── models.py └── templates Then i initialize my migrate class in the app.py from flask import Flask, jsonify, request, render_template from flask_sqlalchemy import SQLAlchemy from conf import ErrorResponses, SuccessResponses # initialization app = Flask(__name__) db = SQLAlchemy(app) from models import User, db,