ftplib を使用してファイルをプルダウンする、manage.py コマンドを作成しました。ターミナルからこのコマンドを実行すると、正常に動作します。cron が毎晩実行できるように、スクリプトから呼び出したいと思います。スクリプトを実行すると、「django.db.utils.DatabaseError: no such table」エラーで失敗します。エラーなしで外部スクリプトから manage.py、manage.py help を実行できます。何か案は?
manage コマンドからの handle メソッド:
def handle(self, *args, **options):
ftp = ftplib.FTP('ftp.somesite.com')
ftp.login("anonymous")
ftp.cwd('commonupdater')
data = []
ftp.dir(data.append)
file_lines = [line for line in data if 'mydat' in line and '.zip' in line]
files = [line for line in file_lines]
for filespec in files:
target = filespec.split(' ')[-1]
f = open('/tmp/' + target, 'wb')
self.getbinary(ftp, target, outfile=f)
f.close()
self.save_update(target, '/tmp/' + target)
トレースバック
local.dbTraceback (most recent call last):
File "/home/rb/Workspaces/rms/ravelin/manage.py", line 14, in <module>
execute_manager(settings)
File "/home/rb/.virtualenvs/ravelin/lib/python2.7/site-packages/django/core/management/__init__.py", line 438, in execute_manager
utility.execute()
File "/home/rb/.virtualenvs/ravelin/lib/python2.7/site-packages/django/core/management/__init__.py", line 379, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/rb/.virtualenvs/ravelin/lib/python2.7/site-packages/django/core/management/base.py", line 191, in run_from_argv
self.execute(*args, **options.__dict__)
File "/home/rb/.virtualenvs/ravelin/lib/python2.7/site-packages/django/core/management/base.py", line 220, in execute
output = self.handle(*args, **options)
File "/home/rb/Workspaces/rms/ravelin/ravelog/management/commands/fetch_av_updates.py", line 57, in handle
self.save_update(target, '/tmp/' + target)
File "/home/rb/Workspaces/rms/ravelin/ravelog/management/commands/fetch_av_updates.py", line 30, in save_update
if len(av_list) < 1:
File "/home/rb/.virtualenvs/ravelin/lib/python2.7/site-packages/django/db/models/query.py", line 82, in __len__
self._result_cache = list(self.iterator())
File "/home/rb/.virtualenvs/ravelin/lib/python2.7/site-packages/django/db/models/query.py", line 273, in iterator
for row in compiler.results_iter():
File "/home/rb/.virtualenvs/ravelin/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 680, in results_iter
for rows in self.execute_sql(MULTI):
File "/home/rb/.virtualenvs/ravelin/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 735, in execute_sql
cursor.execute(sql, params)
File "/home/rb/.virtualenvs/ravelin/lib/python2.7/site-packages/django/db/backends/util.py", line 34, in execute
return self.cursor.execute(sql, params)
File "/home/rb/.virtualenvs/ravelin/lib/python2.7/site-packages/django/db/backends/sqlite3/base.py", line 234, in execute
return Database.Cursor.execute(self, query, params)
django.db.utils.DatabaseError: no such table: