在virtualenv中找不到Python模塊

Question

我嘗試安裝python模塊：

virtualenv .
source bin/activate
pip install utmp

似乎已安裝：

(wtmp)chris@chris-nb:~/computer/wtmp$ find -iname utmp
./bin/utmp
./lib/python2.7/site-packages/utmp

但是Python表示找不到：

(wtmp)chris@chris-nb:~/computer/wtmp$ ./wtmp.py
Traceback (most recent call last):
  File "./wtmp.py", line 3, in <module>
    import utmp
ImportError: No module named utmp

這是模塊問題嗎？ 我做錯什么了嗎？

如果重要，則操作系統為Ubuntu。

這是重新安裝日志：

(wtmp)chris@chris-nb:~/computer/wtmp$ pip install --upgrade --no-deps --force-reinstall utmp
Downloading/unpacking utmp
  Downloading utmp-0.4.tar.gz
  Running setup.py (path:/home/chris/computer/wtmp/build/utmp/setup.py) egg_info for package utmp
    zip_safe flag not set; analyzing archive contents...
    flake8.reporter: module references __file__
    flake8.tests._test_warnings: module references __file__
    flake8.tests.test_integration: module references __file__

    Installed /home/chris/computer/wtmp/build/utmp/flake8-2.4.1-py2.7.egg
    Searching for six
    Reading https://pypi.python.org/simple/six/
    Best match: six 1.9.0
    Downloading https://pypi.python.org/packages/source/s/six/six-1.9.0.tar.gz#md5=476881ef4012262dfc8adc645ee786c4
    Processing six-1.9.0.tar.gz
    Writing /tmp/easy_install-oJJB7w/six-1.9.0/setup.cfg
    Running six-1.9.0/setup.py -q bdist_egg --dist-dir /tmp/easy_install-oJJB7w/six-1.9.0/egg-dist-tmp-1116oK
    no previously-included directories found matching 'documentation/_build'
    zip_safe flag not set; analyzing archive contents...
    six: module references __path__

    Installed /home/chris/computer/wtmp/build/utmp/six-1.9.0-py2.7.egg
    Searching for mccabe>=0.2.1,<0.4
    Reading https://pypi.python.org/simple/mccabe/
    Best match: mccabe 0.3.1
    Downloading https://pypi.python.org/packages/source/m/mccabe/mccabe-0.3.1.tar.gz#md5=9a1570c470ff5db678cc0c03d5c0c237
    Processing mccabe-0.3.1.tar.gz
    Writing /tmp/easy_install-uFdTms/mccabe-0.3.1/setup.cfg
    Running mccabe-0.3.1/setup.py -q bdist_egg --dist-dir /tmp/easy_install-uFdTms/mccabe-0.3.1/egg-dist-tmp-Q139di

    Installed /home/chris/computer/wtmp/build/utmp/mccabe-0.3.1-py2.7.egg
    Searching for pep8>=1.5.7,!=1.6.0,!=1.6.1,!=1.6.2
    Reading https://pypi.python.org/simple/pep8/
    Best match: pep8 1.5.7
    Downloading https://pypi.python.org/packages/source/p/pep8/pep8-1.5.7.tar.gz#md5=f6adbdd69365ecca20513c709f9b7c93
    Processing pep8-1.5.7.tar.gz
    Writing /tmp/easy_install-BdNCrK/pep8-1.5.7/setup.cfg
    Running pep8-1.5.7/setup.py -q bdist_egg --dist-dir /tmp/easy_install-BdNCrK/pep8-1.5.7/egg-dist-tmp-rrUWb1
    warning: no previously-included files matching '*.pyc' found under directory 'docs'
    warning: no previously-included files matching '*.pyo' found under directory 'docs'
    warning: no previously-included files matching '*.pyc' found under directory 'testsuite'
    warning: no previously-included files matching '*.pyo' found under directory 'testsuite'
    no previously-included directories found matching 'docs/_build'

    Installed /home/chris/computer/wtmp/build/utmp/pep8-1.5.7-py2.7.egg
    Searching for pyflakes>=0.8.1,<0.9
    Reading https://pypi.python.org/simple/pyflakes/
    Best match: pyflakes 0.8.1
    Downloading https://pypi.python.org/packages/source/p/pyflakes/pyflakes-0.8.1.tar.gz#md5=905fe91ad14b912807e8fdc2ac2e2c23
    Processing pyflakes-0.8.1.tar.gz
    Writing /tmp/easy_install-R5ltqy/pyflakes-0.8.1/setup.cfg
    Running pyflakes-0.8.1/setup.py -q bdist_egg --dist-dir     /tmp/easy_install-R5ltqy/pyflakes-0.8.1/egg-dist-tmp-a8CCFW
    zip_safe flag not set; analyzing archive contents...
    pyflakes.checker: module references __file__
    pyflakes.checker: module references __path__
    pyflakes.test.test_api: module references __file__
    pyflakes.test.test_undefined_names: module references __file__
    pyflakes.test.test_undefined_names: module references __path__

    Installed /home/chris/computer/wtmp/build/utmp/pyflakes-0.8.1-py2.7.egg

    warning: no files found matching '*.rst' under directory 'docs'
    warning: no files found matching '*.py' under directory 'docs'
Installing collected packages: utmp
  Found existing installation: utmp 0.4
    Uninstalling utmp:
      Successfully uninstalled utmp
  Running setup.py install for utmp

    warning: no files found matching '*.rst' under directory 'docs'
    warning: no files found matching '*.py' under directory 'docs'
    Installing utmp script to /home/chris/computer/wtmp/bin
Successfully installed utmp
Cleaning up...

Answer 1

您可以通過調用pip list或pip show utmp來檢查它是否已安裝在virualenv中。

如果沒有，請嘗試重新安裝它：

pip install --upgrade --no-deps --force-reinstall utmp

並使用錯誤日志擴展您的問題。

還要驗證shebang行，因為它可能指向的不是您的virtualenv。

Answer 2

只是碰到了同樣的問題。 我通過使用which python找出了問題所在。 它告訴我，我實際上有一個別名，該別名指向與當前virtualenv Python可執行文件不同的python可執行文件。 顯然，別名比通過source設置的路徑更重要。