在你拿真金白银进行交易之前，你尽可以回溯测试或模拟交易。
You can back test or paper trade for as long as you need before investing real money.
回溯到初始需求从而确保所有的需求都被执行和测试，这在任何一支管理良好、运作高效的软件开发团队中都处于核心地位。
Traceability back to original requirements to ensure that all requirements have been implemented and tested is at the core of any well governed and efficient software development effort.
另一方面，错误是意外的问题——因为我们事先不知道哪里会出错，我们需要分析实际测试运行中的回溯来诊断这种问题。
Errors, on the other hand, are unexpected problems — since we do not know in advance what can go wrong, we need to examine the traceback in the actual test run to diagnose such problems.
如果测试方法没有按预期运行，我们将得到一个错误(以及描述这个错误的回溯)。
If the test method does not run as anticipated, we will get an error (and a traceback describing the error).
您需要添加一个标记以运行 run-e，这样一来，您就可以在IPythonShell 中避免回溯到单元测试模块。
You need to add a flag to run run -e so that you can avoid getting a traceback to the unittest module in the IPython shell.
回溯至1993年，Debian被公认为至今为止测试最全面，bug最少的发行版之一。
Dating back to 1993, Debian is currently known as one of the most well-tested and bug-free distros available today.
回溯至1993年，Debian被公认为至今为止测试最全面，bug最少的发行版之一。
Dating back to 1993, Debian is currently known as one of the most well-tested and bug-free distros available today.
应用推荐