def _site_packages():
import site, sys, os
paths = []
prefixes = [sys.prefix]
if sys.exec_prefix != sys.prefix:
prefixes.append(sys.exec_prefix)
for prefix in prefixes:
paths.append(os.path.join(prefix, 'lib', 'python' + sys.version[:3],
'site-packages'))
if os.path.join('.framework', '') in os.path.join(sys.prefix, ''):
home = os.environ.get('HOME')
if home:
paths.append(os.path.join(home, 'Library', 'Python',
sys.version[:3], 'site-packages'))
# Work around for a misfeature in setuptools: easy_install.pth places
# site-packages way to early on sys.path and that breaks py2app bundles.
# NOTE: this is hacks into an undocumented feature of setuptools and
# might stop to work without warning.
sys.__egginsert = len(sys.path)
for path in paths:
site.addsitedir(path)
python类__egginsert()的实例源码
__boot__.py 文件源码
项目：Mosaic-for-Lego-Digital-Designer
作者: JosephSamela
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def force_global_eggs_after_local_site_packages():
"""
Force easy_installed eggs in the global environment to get placed
in sys.path after all packages inside the virtualenv. This
maintains the "least surprise" result that packages in the
virtualenv always mask global packages, never the other way
around.
"""
egginsert = getattr(sys, '__egginsert', 0)
for i, path in enumerate(sys.path):
if i > egginsert and path.startswith(sys.prefix):
egginsert = i
sys.__egginsert = egginsert + 1
def force_global_eggs_after_local_site_packages():
"""
Force easy_installed eggs in the global environment to get placed
in sys.path after all packages inside the virtualenv. This
maintains the "least surprise" result that packages in the
virtualenv always mask global packages, never the other way
around.
"""
egginsert = getattr(sys, '__egginsert', 0)
for i, path in enumerate(sys.path):
if i > egginsert and path.startswith(sys.prefix):
egginsert = i
sys.__egginsert = egginsert + 1
def save(self):
"""Write changed .pth file back to disk"""
if not self.dirty:
return
data = '\n'.join(map(self.make_relative,self.paths))
if data:
log.debug("Saving %s", self.filename)
data = (
"import sys; sys.__plen = len(sys.path)\n"
"%s\n"
"import sys; new=sys.path[sys.__plen:];"
" del sys.path[sys.__plen:];"
" p=getattr(sys,'__egginsert',0); sys.path[p:p]=new;"
" sys.__egginsert = p+len(new)\n"
) % data
if os.path.islink(self.filename):
os.unlink(self.filename)
f = open(self.filename,'wt')
f.write(data)
f.close()
elif os.path.exists(self.filename):
log.debug("Deleting empty %s", self.filename)
os.unlink(self.filename)
self.dirty = False
def force_global_eggs_after_local_site_packages():
"""
Force easy_installed eggs in the global environment to get placed
in sys.path after all packages inside the virtualenv. This
maintains the "least surprise" result that packages in the
virtualenv always mask global packages, never the other way
around.
"""
egginsert = getattr(sys, '__egginsert', 0)
for i, path in enumerate(sys.path):
if i > egginsert and path.startswith(sys.prefix):
egginsert = i
sys.__egginsert = egginsert + 1
def force_global_eggs_after_local_site_packages():
"""
Force easy_installed eggs in the global environment to get placed
in sys.path after all packages inside the virtualenv. This
maintains the "least surprise" result that packages in the
virtualenv always mask global packages, never the other way
around.
"""
egginsert = getattr(sys, '__egginsert', 0)
for i, path in enumerate(sys.path):
if i > egginsert and path.startswith(sys.prefix):
egginsert = i
sys.__egginsert = egginsert + 1
def save(self):
"""Write changed .pth file back to disk"""
if not self.dirty:
return
data = '\n'.join(map(self.make_relative, self.paths))
if data:
log.debug("Saving %s", self.filename)
data = (
"import sys; sys.__plen = len(sys.path)\n"
"%s\n"
"import sys; new=sys.path[sys.__plen:];"
" del sys.path[sys.__plen:];"
" p=getattr(sys,'__egginsert',0); sys.path[p:p]=new;"
" sys.__egginsert = p+len(new)\n"
) % data
if os.path.islink(self.filename):
os.unlink(self.filename)
f = open(self.filename, 'wt')
f.write(data)
f.close()
elif os.path.exists(self.filename):
log.debug("Deleting empty %s", self.filename)
os.unlink(self.filename)
self.dirty = False
def force_global_eggs_after_local_site_packages():
"""
Force easy_installed eggs in the global environment to get placed
in sys.path after all packages inside the virtualenv. This
maintains the "least surprise" result that packages in the
virtualenv always mask global packages, never the other way
around.
"""
egginsert = getattr(sys, '__egginsert', 0)
for i, path in enumerate(sys.path):
if i > egginsert and path.startswith(sys.prefix):
egginsert = i
sys.__egginsert = egginsert + 1
def save(self):
"""Write changed .pth file back to disk"""
if not self.dirty:
return
data = '\n'.join(map(self.make_relative, self.paths))
if data:
log.debug("Saving %s", self.filename)
data = (
"import sys; sys.__plen = len(sys.path)\n"
"%s\n"
"import sys; new=sys.path[sys.__plen:];"
" del sys.path[sys.__plen:];"
" p=getattr(sys,'__egginsert',0); sys.path[p:p]=new;"
" sys.__egginsert = p+len(new)\n"
) % data
if os.path.islink(self.filename):
os.unlink(self.filename)
f = open(self.filename, 'wt')
f.write(data)
f.close()
elif os.path.exists(self.filename):
log.debug("Deleting empty %s", self.filename)
os.unlink(self.filename)
self.dirty = False
def force_global_eggs_after_local_site_packages():
"""
Force easy_installed eggs in the global environment to get placed
in sys.path after all packages inside the virtualenv. This
maintains the "least surprise" result that packages in the
virtualenv always mask global packages, never the other way
around.
"""
egginsert = getattr(sys, '__egginsert', 0)
for i, path in enumerate(sys.path):
if i > egginsert and path.startswith(sys.prefix):
egginsert = i
sys.__egginsert = egginsert + 1
def force_global_eggs_after_local_site_packages():
"""
Force easy_installed eggs in the global environment to get placed
in sys.path after all packages inside the virtualenv. This
maintains the "least surprise" result that packages in the
virtualenv always mask global packages, never the other way
around.
"""
egginsert = getattr(sys, '__egginsert', 0)
for i, path in enumerate(sys.path):
if i > egginsert and path.startswith(sys.prefix):
egginsert = i
sys.__egginsert = egginsert + 1
def force_global_eggs_after_local_site_packages():
"""
Force easy_installed eggs in the global environment to get placed
in sys.path after all packages inside the virtualenv. This
maintains the "least surprise" result that packages in the
virtualenv always mask global packages, never the other way
around.
"""
egginsert = getattr(sys, '__egginsert', 0)
for i, path in enumerate(sys.path):
if i > egginsert and path.startswith(sys.prefix):
egginsert = i
sys.__egginsert = egginsert + 1
def force_global_eggs_after_local_site_packages():
"""
Force easy_installed eggs in the global environment to get placed
in sys.path after all packages inside the virtualenv. This
maintains the "least surprise" result that packages in the
virtualenv always mask global packages, never the other way
around.
"""
egginsert = getattr(sys, '__egginsert', 0)
for i, path in enumerate(sys.path):
if i > egginsert and path.startswith(sys.prefix):
egginsert = i
sys.__egginsert = egginsert + 1
def force_global_eggs_after_local_site_packages():
"""
Force easy_installed eggs in the global environment to get placed
in sys.path after all packages inside the virtualenv. This
maintains the "least surprise" result that packages in the
virtualenv always mask global packages, never the other way
around.
"""
egginsert = getattr(sys, '__egginsert', 0)
for i, path in enumerate(sys.path):
if i > egginsert and path.startswith(sys.prefix):
egginsert = i
sys.__egginsert = egginsert + 1
def force_global_eggs_after_local_site_packages():
"""
Force easy_installed eggs in the global environment to get placed
in sys.path after all packages inside the virtualenv. This
maintains the "least surprise" result that packages in the
virtualenv always mask global packages, never the other way
around.
"""
egginsert = getattr(sys, '__egginsert', 0)
for i, path in enumerate(sys.path):
if i > egginsert and path.startswith(sys.prefix):
egginsert = i
sys.__egginsert = egginsert + 1
def force_global_eggs_after_local_site_packages():
"""
Force easy_installed eggs in the global environment to get placed
in sys.path after all packages inside the virtualenv. This
maintains the "least surprise" result that packages in the
virtualenv always mask global packages, never the other way
around.
"""
egginsert = getattr(sys, '__egginsert', 0)
for i, path in enumerate(sys.path):
if i > egginsert and path.startswith(sys.prefix):
egginsert = i
sys.__egginsert = egginsert + 1
def force_global_eggs_after_local_site_packages():
"""
Force easy_installed eggs in the global environment to get placed
in sys.path after all packages inside the virtualenv. This
maintains the "least surprise" result that packages in the
virtualenv always mask global packages, never the other way
around.
"""
egginsert = getattr(sys, '__egginsert', 0)
for i, path in enumerate(sys.path):
if i > egginsert and path.startswith(sys.prefix):
egginsert = i
sys.__egginsert = egginsert + 1
def force_global_eggs_after_local_site_packages():
"""
Force easy_installed eggs in the global environment to get placed
in sys.path after all packages inside the virtualenv. This
maintains the "least surprise" result that packages in the
virtualenv always mask global packages, never the other way
around.
"""
egginsert = getattr(sys, '__egginsert', 0)
for i, path in enumerate(sys.path):
if i > egginsert and path.startswith(sys.prefix):
egginsert = i
sys.__egginsert = egginsert + 1
def force_global_eggs_after_local_site_packages():
"""
Force easy_installed eggs in the global environment to get placed
in sys.path after all packages inside the virtualenv. This
maintains the "least surprise" result that packages in the
virtualenv always mask global packages, never the other way
around.
"""
egginsert = getattr(sys, '__egginsert', 0)
for i, path in enumerate(sys.path):
if i > egginsert and path.startswith(sys.prefix):
egginsert = i
sys.__egginsert = egginsert + 1
def force_global_eggs_after_local_site_packages():
"""
Force easy_installed eggs in the global environment to get placed
in sys.path after all packages inside the virtualenv. This
maintains the "least surprise" result that packages in the
virtualenv always mask global packages, never the other way
around.
"""
egginsert = getattr(sys, '__egginsert', 0)
for i, path in enumerate(sys.path):
if i > egginsert and path.startswith(sys.prefix):
egginsert = i
sys.__egginsert = egginsert + 1
def force_global_eggs_after_local_site_packages():
"""
Force easy_installed eggs in the global environment to get placed
in sys.path after all packages inside the virtualenv. This
maintains the "least surprise" result that packages in the
virtualenv always mask global packages, never the other way
around.
"""
egginsert = getattr(sys, '__egginsert', 0)
for i, path in enumerate(sys.path):
if i > egginsert and path.startswith(sys.prefix):
egginsert = i
sys.__egginsert = egginsert + 1
def save(self):
"""Write changed .pth file back to disk"""
if not self.dirty:
return
data = '\n'.join(map(self.make_relative, self.paths))
if data:
log.debug("Saving %s", self.filename)
data = (
"import sys; sys.__plen = len(sys.path)\n"
"%s\n"
"import sys; new=sys.path[sys.__plen:];"
" del sys.path[sys.__plen:];"
" p=getattr(sys,'__egginsert',0); sys.path[p:p]=new;"
" sys.__egginsert = p+len(new)\n"
) % data
if os.path.islink(self.filename):
os.unlink(self.filename)
f = open(self.filename, 'wt')
f.write(data)
f.close()
elif os.path.exists(self.filename):
log.debug("Deleting empty %s", self.filename)
os.unlink(self.filename)
self.dirty = False
def force_global_eggs_after_local_site_packages():
"""
Force easy_installed eggs in the global environment to get placed
in sys.path after all packages inside the virtualenv. This
maintains the "least surprise" result that packages in the
virtualenv always mask global packages, never the other way
around.
"""
egginsert = getattr(sys, '__egginsert', 0)
for i, path in enumerate(sys.path):
if i > egginsert and path.startswith(sys.prefix):
egginsert = i
sys.__egginsert = egginsert + 1
def force_global_eggs_after_local_site_packages():
"""
Force easy_installed eggs in the global environment to get placed
in sys.path after all packages inside the virtualenv. This
maintains the "least surprise" result that packages in the
virtualenv always mask global packages, never the other way
around.
"""
egginsert = getattr(sys, '__egginsert', 0)
for i, path in enumerate(sys.path):
if i > egginsert and path.startswith(sys.prefix):
egginsert = i
sys.__egginsert = egginsert + 1
def save(self):
"""Write changed .pth file back to disk"""
if not self.dirty:
return
data = '\n'.join(map(self.make_relative,self.paths))
if data:
log.debug("Saving %s", self.filename)
data = (
"import sys; sys.__plen = len(sys.path)\n"
"%s\n"
"import sys; new=sys.path[sys.__plen:];"
" del sys.path[sys.__plen:];"
" p=getattr(sys,'__egginsert',0); sys.path[p:p]=new;"
" sys.__egginsert = p+len(new)\n"
) % data
if os.path.islink(self.filename):
os.unlink(self.filename)
f = open(self.filename,'wt')
f.write(data)
f.close()
elif os.path.exists(self.filename):
log.debug("Deleting empty %s", self.filename)
os.unlink(self.filename)
self.dirty = False
def force_global_eggs_after_local_site_packages():
"""
Force easy_installed eggs in the global environment to get placed
in sys.path after all packages inside the virtualenv. This
maintains the "least surprise" result that packages in the
virtualenv always mask global packages, never the other way
around.
"""
egginsert = getattr(sys, '__egginsert', 0)
for i, path in enumerate(sys.path):
if i > egginsert and path.startswith(sys.prefix):
egginsert = i
sys.__egginsert = egginsert + 1
def force_global_eggs_after_local_site_packages():
"""
Force easy_installed eggs in the global environment to get placed
in sys.path after all packages inside the virtualenv. This
maintains the "least surprise" result that packages in the
virtualenv always mask global packages, never the other way
around.
"""
egginsert = getattr(sys, '__egginsert', 0)
for i, path in enumerate(sys.path):
if i > egginsert and path.startswith(sys.prefix):
egginsert = i
sys.__egginsert = egginsert + 1
def force_global_eggs_after_local_site_packages():
"""
Force easy_installed eggs in the global environment to get placed
in sys.path after all packages inside the virtualenv. This
maintains the "least surprise" result that packages in the
virtualenv always mask global packages, never the other way
around.
"""
egginsert = getattr(sys, '__egginsert', 0)
for i, path in enumerate(sys.path):
if i > egginsert and path.startswith(sys.prefix):
egginsert = i
sys.__egginsert = egginsert + 1
def force_global_eggs_after_local_site_packages():
"""
Force easy_installed eggs in the global environment to get placed
in sys.path after all packages inside the virtualenv. This
maintains the "least surprise" result that packages in the
virtualenv always mask global packages, never the other way
around.
"""
egginsert = getattr(sys, '__egginsert', 0)
for i, path in enumerate(sys.path):
if i > egginsert and path.startswith(sys.prefix):
egginsert = i
sys.__egginsert = egginsert + 1
def force_global_eggs_after_local_site_packages():
"""
Force easy_installed eggs in the global environment to get placed
in sys.path after all packages inside the virtualenv. This
maintains the "least surprise" result that packages in the
virtualenv always mask global packages, never the other way
around.
"""
egginsert = getattr(sys, '__egginsert', 0)
for i, path in enumerate(sys.path):
if i > egginsert and path.startswith(sys.prefix):
egginsert = i
sys.__egginsert = egginsert + 1
