virtualEnvironment/lib/python2.7/site-packages/setuptools/command/easy_install.py
def check_site_dir(self):
        """Verify that self.install_dir is .pth-capable dir, if needed"""

        instdir = normalize_path(self.install_dir)
        pth_file = os.path.join(instdir, 'easy-install.pth')

        # Is it a configured, PYTHONPATH, implicit, or explicit site dir?
        is_site_dir = instdir in self.all_site_dirs

        if not is_site_dir and not self.multi_version:
            # No?  Then directly test whether it does .pth file processing
            is_site_dir = self.check_pth_processing()
        else:
            # make sure we can write to target dir
            testfile = self.pseudo_tempname() + '.write-test'
            test_exists = os.path.exists(testfile)
            try:
                if test_exists:
                    os.unlink(testfile)
                open(testfile, 'w').close()
                os.unlink(testfile)
            except (OSError, IOError):
                self.cant_write_to_target()

        if not is_site_dir and not self.multi_version:
            # Can't install non-multi to non-site dir
            raise DistutilsError(self.no_default_version_msg())

        if is_site_dir:
            if self.pth_file is None:
                self.pth_file = PthDistributions(pth_file, self.all_site_dirs)
        else:
            self.pth_file = None

        PYTHONPATH = os.environ.get('PYTHONPATH', '').split(os.pathsep)
        if instdir not in map(normalize_path, [_f for _f in PYTHONPATH if _f]):
            # only PYTHONPATH dirs need a site.py, so pretend it's there
            self.sitepy_installed = True
        elif self.multi_version and not os.path.exists(pth_file):
            self.sitepy_installed = True  # don't need site.py in this case
            self.pth_file = None  # and don't create a .pth file
        self.install_dir = instdir
def check_site_dir(self):
        instdir = normalize_path(self.install_dir)
        pth_file = os.path.join(instdir, 'easy-install.pth')

        # Is it a configured, PYTHONPATH, implicit, or explicit site dir?
        is_site_dir = instdir in self.all_site_dirs

        if not is_site_dir and not self.multi_version:
            # No?  Then directly test whether it does .pth file processing
            is_site_dir = self.check_pth_processing()
        else:
            # make sure we can write to target dir
            testfile = self.pseudo_tempname() + '.write-test'
            test_exists = os.path.exists(testfile)
            try:
                if test_exists:
                    os.unlink(testfile)
                open(testfile, 'w').close()
                os.unlink(testfile)
            except (OSError, IOError):
                self.cant_write_to_target()

        if not is_site_dir and not self.multi_version:
            # Can't install non-multi to non-site dir
            raise DistutilsError(self.no_default_version_msg())

        if is_site_dir:
            if self.pth_file is None:
                self.pth_file = PthDistributions(pth_file, self.all_site_dirs)
        else:
            self.pth_file = None

        PYTHONPATH = os.environ.get('PYTHONPATH', '').split(os.pathsep)
        if instdir not in map(normalize_path, [_f for _f in PYTHONPATH if _f]):
            # only PYTHONPATH dirs need a site.py, so pretend it's there
            self.sitepy_installed = True
        elif self.multi_version and not os.path.exists(pth_file):
            self.sitepy_installed = True  # don't need site.py in this case
            self.pth_file = None  # and don't create a .pth file
        self.install_dir = instdir
def check_site_dir ( self ) : instdir = normalize_path ( self . install_dir ) pth_file = os . path . join ( instdir , 'easy-install.pth' ) # Is it a configured, PYTHONPATH, implicit, or explicit site dir? is_site_dir = instdir in self . all_site_dirs if not is_site_dir and not self . multi_version : # No?  Then directly test whether it does .pth file processing is_site_dir = self . check_pth_processing ( ) else : # make sure we can write to target dir testfile = self . pseudo_tempname ( ) + '.write-test' test_exists = os . path . exists ( testfile ) try : if test_exists : os . unlink ( testfile ) open ( testfile , 'w' ) . close ( ) os . unlink ( testfile ) except ( OSError , IOError ) : self . cant_write_to_target ( ) if not is_site_dir and not self . multi_version : # Can't install non-multi to non-site dir raise DistutilsError ( self . no_default_version_msg ( ) ) if is_site_dir : if self . pth_file is None : self . pth_file = PthDistributions ( pth_file , self . all_site_dirs ) else : self . pth_file = None PYTHONPATH = os . environ . get ( 'PYTHONPATH' , '' ) . split ( os . pathsep ) if instdir not in map ( normalize_path , [ _f for _f in PYTHONPATH if _f ] ) : # only PYTHONPATH dirs need a site.py, so pretend it's there self . sitepy_installed = True elif self . multi_version and not os . path . exists ( pth_file ) : self . sitepy_installed = True # don't need site.py in this case self . pth_file = None # and don't create a .pth file self . install_dir = instdir
Verify that self.install_dir is .pth-capable dir, if needed
Verify that self . install_dir is . pth - capable dir if needed