但我仍然收到

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尽管安装了它，但我仍然收到"ImportError:没有名为web的模块"

本文介绍了尽管安装了它，但我仍然收到"ImportError:没有名为web的模块"的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我想运行一个简单的"Hello world"应用程序.每次运行它都会得到

I would like to run a simple 'Hello world' app. Every time I run it I get 

'ImportError: No module named web'

我使用pip和easy_install多次安装了web.py.我尝试卸载它并重新安装.我尝试将其安装为sudo.似乎没有任何作用.我使用OS X

I installed web.py using pip and using easy_install several times. I tried uninstalling it and installing again. I tried installing it a as sudo. Nothing seems to work. I use OS X

应用程序代码:

import web

urls = (
  '/', 'index'
)

app = web.application(urls, globals())

class index:
    def GET(self):
        greeting = "Hello World"
        return greeting

if __name__ == "__main__":
    app.run()

我尝试使用以下命令运行此应用程序:

I tried to run this app using this commend:

python /Users/mptorz/webversion/bin/app.py http://0.0.0.0:8080/

但是我知道这不是代码的问题，因为我基本上是在做这门课程 http: //learnpythonthehardway.org/book/ex50.html .

However I know that this is not an issue of the code, because I am basically doing this course http://learnpythonthehardway.org/book/ex50.html.

我认为这可能很有趣.我刚刚再次尝试重新安装web.py，但出现此错误:

I thought it might be interesting. I have just tried again to reinstall web.py and I have got this error:

pc7:~ mptorz$ pip uninstall web.py
Uninstalling web.py-0.40.dev0:
  /usr/local/lib/python2.7/site-packages/web.py-0.40.dev0-py2.7.egg
Proceed (y/n)? y
Exception:
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/site-packages/pip/basecommand.py", line 215, in main
    status = self.run(options, args)
  File "/usr/local/lib/python2.7/site-packages/pip/commands/uninstall.py", line 76, in run
    requirement_set.uninstall(auto_confirm=options.yes)
  File "/usr/local/lib/python2.7/site-packages/pip/req/req_set.py", line 336, in uninstall
    req.uninstall(auto_confirm=auto_confirm)
  File "/usr/local/lib/python2.7/site-packages/pip/req/req_install.py", line 742, in uninstall
    paths_to_remove.remove(auto_confirm)
  File "/usr/local/lib/python2.7/site-packages/pip/req/req_uninstall.py", line 115, in remove
    renames(path, new_path)
  File "/usr/local/lib/python2.7/site-packages/pip/utils/__init__.py", line 267, in renames
    shutil.move(old, new)
  File "/usr/local/Cellar/python/2.7.12/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py", line 300, in move
    rmtree(src)
  File "/usr/local/Cellar/python/2.7.12/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py", line 247, in rmtree
    rmtree(fullname, ignore_errors, onerror)
  File "/usr/local/Cellar/python/2.7.12/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py", line 252, in rmtree
    onerror(os.remove, fullname, sys.exc_info())
  File "/usr/local/Cellar/python/2.7.12/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py", line 250, in rmtree
    os.remove(fullname)
OSError: [Errno 13] Permission denied: '/usr/local/lib/python2.7/site-packages/web.py-0.40.dev0-py2.7.egg/EGG-INFO/dependency_links.txt'

我尝试使用sudo进行相同操作，但出现此错误.

I tried doing the same with sudo and I got this error.

pc7:~ mptorz$ sudo pip uninstall web.py
Password:
The directory '/Users/mptorz/Library/Caches/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
Uninstalling web.py-0.40.dev0:
  /usr/local/lib/python2.7/site-packages/web.py-0.40.dev0-py2.7.egg
Proceed (y/n)? y
  Successfully uninstalled web.py-0.40.dev0
The directory '/Users/mptorz/Library/Caches/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.

然后我尝试这样做:

pc7:~ mptorz$ sudo pip install web.py
The directory '/Users/mptorz/Library/Caches/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
The directory '/Users/mptorz/Library/Caches/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
Collecting web.py
  Downloading web.py-0.38.tar.gz (91kB)
    100% |████████████████████████████████| 92kB 199kB/s
Installing collected packages: web.py
  Running setup.py install for web.py ... done
Successfully installed web.py-0.38

当我运行该应用程序时，我仍然收到相同的错误"ImportError:没有名为Web的模块".

When I run the app I still get the same error 'ImportError: No module named web'.

我被要求添加python -c"print( import ('sys').path)"的结果:

I was asked to add the result of python -c "print(import('sys').path)":

pc7:~ mptorz$ python -c "print(__import__('sys').path)"
['', '/Library/Python/2.7/site-packages/pip-8.1.2-py2.7.egg', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python27.zip', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages', '/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload', '/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/PyObjC', '/Library/Python/2.7/site-packages']

Somone还建议尝试"python -m pip install web.py"导致此错误:

Somone also suggested trying "python -m pip install web.py"It resulted in this error:

pc7:~ mptorz$  python -m pip install web.py
Collecting web.py
  Downloading web.py-0.38.tar.gz (91kB)
    100% |████████████████████████████████| 92kB 215kB/s
Installing collected packages: web.py
  Running setup.py install for web.py ... error
    Complete output from command /usr/bin/python -u -c "import setuptools, tokenize;__file__='/private/var/folders/w6/f08g43wn1zg6ny5b_lq414cr0000gn/T/pip-build-pn7SCD/web.py/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /var/folders/w6/f08g43wn1zg6ny5b_lq414cr0000gn/T/pip-tBblX5-record/install-record.txt --single-version-externally-managed --compile:
    running install
    running build
    running build_py
    creating build
    creating build/lib
    creating build/lib/web
    copying web/__init__.py -> build/lib/web
    copying web/application.py -> build/lib/web
    copying web/browser.py -> build/lib/web
    copying web/db.py -> build/lib/web
    copying web/debugerror.py -> build/lib/web
    copying web/form.py -> build/lib/web
    copying web/http.py -> build/lib/web
    copying web/httpserver.py -> build/lib/web
    copying web/net.py -> build/lib/web
    copying web/python23.py -> build/lib/web
    copying web/session.py -> build/lib/web
    copying web/template.py -> build/lib/web
    copying web/test.py -> build/lib/web
    copying web/utils.py -> build/lib/web
    copying web/webapi.py -> build/lib/web
    copying web/webopenid.py -> build/lib/web
    copying web/wsgi.py -> build/lib/web
    creating build/lib/web/wsgiserver
    copying web/wsgiserver/__init__.py -> build/lib/web/wsgiserver
    copying web/wsgiserver/ssl_builtin.py -> build/lib/web/wsgiserver
    copying web/wsgiserver/ssl_pyopenssl.py -> build/lib/web/wsgiserver
    creating build/lib/web/contrib
    copying web/contrib/__init__.py -> build/lib/web/contrib
    copying web/contrib/template.py -> build/lib/web/contrib
    running install_lib
    creating /Library/Python/2.7/site-packages/web
    error: could not create '/Library/Python/2.7/site-packages/web': Permission denied

    ----------------------------------------
Command "/usr/bin/python -u -c "import setuptools, tokenize;__file__='/private/var/folders/w6/f08g43wn1zg6ny5b_lq414cr0000gn/T/pip-build-pn7SCD/web.py/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /var/folders/w6/f08g43wn1zg6ny5b_lq414cr0000gn/T/pip-tBblX5-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /private/var/folders/w6/f08g43wn1zg6ny5b_lq414cr0000gn/T/pip-build-pn7SCD/web.py/

完成所有建议后，我尝试再次运行该应用程序，并且得到了以下提示:

After doing everything I was advised here, I tried running the app again and I have got this:

pc7:~ mptorz$ python /Users/mptorz/webversion/bin/app.py http://0.0.0.0:8080/
Traceback (most recent call last):
  File "/Users/mptorz/webversion/bin/app.py", line 15, in <module>
    app.run()
  File "/Library/Python/2.7/site-packages/web/application.py", line 313, in run
    return wsgi.runwsgi(self.wsgifunc(*middleware))
  File "/Library/Python/2.7/site-packages/web/wsgi.py", line 55, in runwsgi
    server_addr = validip(listget(sys.argv, 1, ''))
  File "/Library/Python/2.7/site-packages/web/net.py", line 125, in validip
    port = int(port)
ValueError: invalid literal for int() with base 10: '//0.0.0.0:8080/'

我刚刚尝试了@PhilipTzou建议的自制方法.完成之后，运行该应用程序的输出为:

I have just tried the home-brew solution suggested by @PhilipTzou. After I did that the output of running the app is:

pc7:~ mptorz$ python /Users/mptorz/webversion/bin/app.py http://0.0.0.0:8080/
Traceback (most recent call last):
  File "/Users/mptorz/webversion/bin/app.py", line 1, in <module>
    import web
  File "/usr/local/lib/python2.7/site-packages/web/__init__.py", line 14, in <module>
    import utils, db, net, wsgi, http, webapi, httpserver, debugerror
  File "/usr/local/lib/python2.7/site-packages/web/wsgi.py", line 8, in <module>
    import http
  File "/usr/local/lib/python2.7/site-packages/web/http.py", line 16, in <module>
    import net, utils, webapi as web
  File "/usr/local/lib/python2.7/site-packages/web/webapi.py", line 31, in <module>
    import sys, cgi, Cookie, pprint, urlparse, urllib
  File "/usr/local/Cellar/python/2.7.12/Frameworks/Python.framework/Versions/2.7/lib/python2.7/cgi.py", line 50, in <module>
    import mimetools
  File "/usr/local/Cellar/python/2.7.12/Frameworks/Python.framework/Versions/2.7/lib/python2.7/mimetools.py", line 6, in <module>
    import tempfile
  File "/usr/local/Cellar/python/2.7.12/Frameworks/Python.framework/Versions/2.7/lib/python2.7/tempfile.py", line 32, in <module>
    import io as _io
  File "/usr/local/Cellar/python/2.7.12/Frameworks/Python.framework/Versions/2.7/lib/python2.7/io.py", line 51, in <module>
    import _io
ImportError: dlopen(/usr/local/Cellar/python/2.7.12/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/_io.so, 2): Symbol not found: __PyCodecInfo_GetIncrementalDecoder
  Referenced from: /usr/local/Cellar/python/2.7.12/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/_io.so
  Expected in: flat namespace
 in /usr/local/Cellar/python/2.7.12/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/_io.so

解决方案终于，它奏效了.运行@PhilipTzou建议的解决方案并输入python /Users/mptorz/webversion/bin/app.py 8080 app.py后，终于可以运行了，我可以继续我的python课程.谢谢大家的帮助:)

SOLUTIONFinally, it worked. After running the solution suggested by @PhilipTzou and entering python /Users/mptorz/webversion/bin/app.py 8080 app.py is finally working and I can continue my python course. Thank you all for your help :)

推荐答案

根据sys.path的输出，您可能使用OSX Python运行脚本(app.py)，但使用Homebrew Python执行PIP命令.解决方案非常简单:

According to the output of your sys.path, you are probably using OSX Python to run your script (app.py) but using Homebrew Python to execute PIP command. The solution is pretty simple:

brew link --overwrite python

这将将默认Python更改为Homebrew一个.执行此命令后，您可以通过键入以下命令来验证您是否正在使用Homebrew Python:

This will change your default Python to Homebrew one. After executing this command, you can verify you are using Homebrew Python by typing this command:

which -a python

结果应该是这样的(顺序很重要):

The result should be like this (sequence matters):

/usr/local/bin/python
/usr/bin/python

这篇关于尽管安装了它，但我仍然收到"ImportError:没有名为web的模块"的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！

07-24 01:25
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