cron 执行的 Django 管理命令导致错误

Question

我有以下 cronjob：

0 0 * * * source /home/admin/data/virtualenvs/myapp/bin/activate && python /home/admin/data/virtualenvs/myapp/project/manage.py 1c-import >> /home/admin/data/logs/1c-import.log 2>&1

所以，在日志文件中我看到以下错误：

Traceback (most recent call last):
  File "/home/admin/data/virtualenvs/myapp/project/manage.py", line 28, in <module>
    execute_from_command_line(sys.argv)
  File "/home/admin/data/virtualenvs/myapp/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 443, in execute_from_command_line
    utility.execute()
  File "/home/admin/data/virtualenvs/myapp/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 382, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/admin/data/virtualenvs/myapp/local/lib/python2.7/site-packages/django/core/management/base.py", line 196, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/home/admin/data/virtualenvs/myapp/local/lib/python2.7/site-packages/django/core/management/base.py", line 232, in execute
    output = self.handle(*args, **options)
  File "/home/admin/data/virtualenvs/myapp/project/helper/management/commands/1c-import.py", line 94, in handle
    print 'Product [%s] with price %s and qty %s' % (product_title, product_price, product_qty)
UnicodeEncodeError: 'ascii' codec can't encode characters in position 34-35: ordinal not in range(128)

但是当我尝试手动运行这个命令时 - 没关系。您怎么看 - 可能导致此错误的原因是什么？

Answer 1

问题是 cron 的语言环境设置不正确。

在/etc/environment设置

LANG=en_US.UTF-8

此链接将很有用：locale setting for cron job

还有这个问题：Python3: UnicodeEncodeError only when run from crontab

Answer 2

我的猜测是，当从 cron 作业运行它时，系统会尝试将您的产品名称、价格和数量转换为 ASCII，而当您手动运行它时它会选择不同的编码。 您的一种或多种产品的名称、价格和/或数量中将包含无法编码为 ASCII 的字符。

这样打印信息有帮助吗？：

ENCODING = "utf-8"
print 'Product [%s] with price %s and qty %s' % (product_title.encode(ENCODING), 
                      product_price.encode(ENCODING), product_qty.encode(ENCODING))