inspect

问题 I recently ran into this nasty error where Airflow's apply_defaults decorator is throwing following stack-trace ( my **kwargs do contain job_flow_id ) File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed File "/mnt/airflow/dags/zanalytics-airflow/src/main/mysql_import/dags/mysql_import_dag.py", line 23, in <module> sync_dag_builder.build_sync_dag() File "/mnt/airflow/dags/zanalytics-airflow/src/main/mysql_import/dags/builders/sync_dag_builders/emr_sync_dag_builder.py",

问题 Take this code: def A(): try: B() except Exception: pass def B(): C() def C(): print exception_handling_pointer() A() The function exception_handling_pointer should return me a pointer to the function where this specific exception would be checked first for being handled. I.e., in this case, I would expect the output to be sth. like: <function A ...> How can I implement the function exception_handling_pointer ? 回答1: This is a pretty silly thing to do and most people would say that it can't be

问题 How to get all methods of a given class A that are decorated with the @decorator2? class A(): def method_a(self): pass @decorator1 def method_b(self, b): pass @decorator2 def method_c(self, t=5): pass 回答1: Method 1: Basic registering decorator I already answered this question here: Calling functions by array index in Python =) Method 2: Sourcecode parsing If you do not have control over the class definition , which is one interpretation of what you'd like to suppose, this is impossible

问题 How to get all methods of a given class A that are decorated with the @decorator2? class A(): def method_a(self): pass @decorator1 def method_b(self, b): pass @decorator2 def method_c(self, t=5): pass 回答1: Method 1: Basic registering decorator I already answered this question here: Calling functions by array index in Python =) Method 2: Sourcecode parsing If you do not have control over the class definition , which is one interpretation of what you'd like to suppose, this is impossible

问题 Using ColorZilla I found an interesting feature. If I pick a color from firefox (bars,tabs or anything else of the browser) and then go to: ColorZilla > Inspect Last Element > In Firebug Then I can see the markup,css,js that firefox uses in the firebug panel just like a website. Is there any solution to view this code without use Colorzilla? 回答1: It sounds like you're after Chromebug. Chromebug is the Firebug code adapted for XUL applications. It is the debugger that Firebug developers use to

问题 My Netbeans right-click Navigate -> Go to Declaration/Definition is broken, it refuses to go anywhere. Instead, in the lower left-hand corner, a message pops up: 'Cannot open element: "myvariablename".' It does not matter if the variable or function I have selected to inspect is remote, global, or local to the function. Neither does it work from the upper menu Navigate -> Go to Declaration/Definition. Netbeans is using the GNU C++ toolchain on a 64-bit Ubuntu 13.10 AMD. It uses make, compiles

问题 Under Eclipse I can inspect expressions/variables in debug mode with Ctrl + Shift + I . In IntelliJ IDEA (Community Edition), I can add expressions/variables to the watches, but on the next debug they are lost. Is there any way to inspect variables and expression on the fly when I'm debugging? 回答1: Quick evaluate expression with Ctrl + Alt + F8 (or on a Mac: Cmd + Opt + F8 ) gives me exactly what I want. 回答2: Do you mean "Evaluate expression" action Alt + F8 ? Many more useful shortcuts are

问题 I'm trying to get the source, callee list, defaults, keywords, args and varargs of the functions in a python script. Currently, I'm importing the module and using the python inspect module's getmembers function and passing the isfunction parameter like so: members = inspect.getmembers(myModule, inspect.isfunction) However, this method doesn't work if myModule 's imports aren't available to me (since myModule has to be imported first). I tried using the python ast module to parse and dump the

问题 My question is somewhat similar to this one; it concerns object methods rather than module contents. I want to know if I can use the inspect module to get the methods defined only in the class I'm asking about , and not its parent(s). I need this because my child class defines 'macro' methods, which accesses the parent's methods at a higher level of abstraction, and I don't want the user to have to worry about the lower-level methods defined all the way up the inheritance tree. Here is a

问题 Is it possible to force-show (i.e., create a string representation) an arbitrary record in PureScript for debugging purpose regardless of it having a type-class instance for Show ? I would like to show the contents of the Pux Event object but it does not have a Show instance: No type class instance was found for Data.Show.Show { target :: { value :: String , checked :: Boolean } , currentTarget :: { value :: String , checked :: Boolean } , altKey :: Boolean , button :: Number , buttons ::