如何在Python中执行“如果从ipython运行”测试？

Question

To ease debugging from Ipython, I include the following in the beginning of my scripts 为了简化Ipython的调试，我在脚本的开头添加了以下内容

from IPython.Debugger import Tracer
debug = Tracer()

However, if I launch my script from the command line with 但是，如果我从命令行启动我的脚本

$ python myscript.py

I get an error related to Ipython. 我收到了与Ipython相关的错误。 Is there a way to do the following 有没有办法做到以下几点

if run_from_ipython():
    from IPython.Debugger import Tracer
    debug = Tracer()

This way I only import the Tracer() function when I need it. 这样我只需要在需要时导入Tracer（）函数。

Answer 1

This is probably the kind of thing you are looking for: 这可能是你正在寻找的东西：

def run_from_ipython():
    try:
        __IPYTHON__
        return True
    except NameError:
        return False

Answer 2

The Python way is to use exceptions. Python的方式是使用异常。 Like: 喜欢：

try:
    from IPython.Debugger import Tracer
    debug = Tracer()
except ImportError:
    pass # or set "debug" to something else or whatever