Question

我写了一个简单的python程序：

# /tmp/src/Code.py
import sys
print sys.path

# /tmp/src/Main.py
import Code

当我使用python src/Main.py运行它时，它按预期工作：

max% cd /tmp
max% setenv PYTHONPATH src
max% python src/Main.py
['/tmp/src',
 '/tmp/src',
 '/usr/lib/python2.7',
 '/usr/lib/python2.7/plat-x86_64-linux-gnu',
 '/usr/lib/python2.7/lib-tk',
 '/usr/lib/python2.7/lib-old',
 '/usr/lib/python2.7/lib-dynload',
 '/usr/local/lib/python2.7/dist-packages',
 '/usr/lib/python2.7/dist-packages',
 '/usr/lib/python2.7/dist-packages/PILcompat',
 '/usr/lib/python2.7/dist-packages/gtk-2.0',
 '/usr/lib/python2.7/dist-packages/ubuntu-sso-client']

为了确保sys.path工作正常，我在工作目录中创建了一个文件：

# /tmp/Code.py
print "I never said to search CWD!!! Your Python is broken."
import sys
print sys.path

结果与上述相同，正如预期的那样。

然而，当我在gunicorn中奔跑时，我得到了：

max% gunicorn Main:app
2017-08-08 10:30:53 [26913] [INFO] Starting gunicorn 17.5
2017-08-08 10:30:53 [26913] [INFO] Listening at: http://127.0.0.1:8000 (26913)
2017-08-08 10:30:53 [26913] [INFO] Using worker: sync
2017-08-08 10:30:53 [26918] [INFO] Booting worker with pid: 26918
I never said to search CWD!!! Your Python is broken.
['/tmp',
 '/usr/bin',
 '/tmp/src',
 '/usr/lib/python2.7',
 '/usr/lib/python2.7/plat-x86_64-linux-gnu',
 '/usr/lib/python2.7/lib-tk',
 '/usr/lib/python2.7/lib-old',
 '/usr/lib/python2.7/lib-dynload',
 '/usr/local/lib/python2.7/dist-packages',
 '/usr/lib/python2.7/dist-packages',
 '/usr/lib/python2.7/dist-packages/PILcompat',
 '/usr/lib/python2.7/dist-packages/gtk-2.0',
 '/usr/lib/python2.7/dist-packages/ubuntu-sso-client']

似乎gunicorn随机决定将PWD添加到sys.path中。 gunicorn manpage中没有任何关于此的内容。

python配置：

Flask==0.10.1
Jinja2==2.7.2
MarkupSafe==0.18
PAM==0.4.2
Pillow==2.3.0
Twisted-Core==13.2.0
Twisted-Web==13.2.0
Werkzeug==0.9.4
adium-theme-ubuntu==0.3.4
apt-xapian-index==0.45
argparse==1.2.1
blinker==1.3
chardet==2.0.1
colorama==0.2.5
command-not-found==0.3
debtagshw==0.1
defer==1.0.6
dirspec==13.10
duplicity==0.6.23
gevent==1.0
greenlet==0.4.2
gunicorn==17.5
html5lib==0.999
httplib2==0.8
itsdangerous==0.22
lockfile==0.8
lxml==3.3.3
oauthlib==0.6.1
oneconf==0.3.7.14.04.1
pexpect==3.1
piston-mini-client==0.7.5
pyOpenSSL==0.13
pycrypto==2.6.1
pycups==1.9.66
pygobject==3.12.0
pyinotify==0.9.4
pyserial==2.6
pysmbc==1.0.14.1
python-apt==0.9.3.5ubuntu2
python-debian==0.1.21-nmu2ubuntu2
pyxdg==0.25
reportlab==3.0
requests==2.2.1
sessioninstaller==0.0.0
simplejson==3.3.1
six==1.5.2
software-center-aptd-plugins==0.0.0
ssh-import-id==3.21
system-service==0.1.6
unity-lens-photos==1.0
urllib3==1.7.1
wheel==0.24.0
wsgiref==0.1.2
xdiagnose==3.6.3build2
zope.interface==4.0.5

我知道我可以通过搜索realpath(p) == realpath('.')从sys.path中删除PWD，但有时我们想在PYTHONPATH中使用PWD。因此需要一个更仔细的解决方案。理想情况下，我们会尝试找出哪个软件引入了这个bug。可能只是枪炮手册页不完整？

Answer 1

修改/usr/lib/python2.7/dist-packages/gunicorn/app/wsgiapp.py并更改以下行：

sys.path.insert(0, cwd)

为：

sys.path.append(cwd)

然后--pythonpath按预期工作。

gunicorn正在破坏sys.path

1 个答案: