OhOh is a debugger for your WSGI applications. Using OhOh, you can inspect the stack frames of a wsgi app that’s thrown an exception.
Usage
Use this command to serve your wsgi app in debug mode:
> ohoh "package.module:wsgi_app" -s localost:5000
For a full range of options, see ohoh -h
OhOh provides a plug-in for the httpie utility. You can install httpie using pip install httpie. Once you send a request that results in an exception, you will enter the debugger automatically:
> http localhost:5000
HTTP/1.0 500 Internal Server Error
Date: Fri, 24 Jul 2015 23:41:20 GMT
Server: WSGIServer/0.2 CPython/3.4.2
Content-Type: text/plain; charset=utf-8
OhOh-Debug-Token: eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1N [Truncated (5061 chars) ...]
Location: http://localhost:5000/ohoh-debug/
Content-Length: 454
Traceback (most recent call last):
File "c:\dev\ohoh\build\lib\ohoh\middleware.py", line 57, in __call__
return self._app(environ, start_response)
File "tests\mock_app.py", line 6, in simple_err_app
path.join("foo bar", 475564)
File "C:\Python34\lib\ntpath.py", line 110, in join
p_drive, p_path = splitdrive(p)
File "C:\Python34\lib\ntpath.py", line 159, in splitdrive
if len(p) > 1:
TypeError: object of type 'int' has no len()
OhOh Interactive Debugger v0.1.dev28+n8ec9121
(odb) up
> c:\python34\lib\ntpath.py(110)join()
-> p_drive, p_path = splitdrive(p)
(odb)
Commands
The following commands are supported by the command interpreter (you can type help at the debugger prompt for online help with commands):
Command |
Description |
|---|---|
Client commands |
|
quit |
Exit the debugger. |
token |
View the current debug server token. |
url |
View or set the url to which debug requests are sent. |
version |
View the version number of the debugger. |
Debug commands |
|
! |
Execute a one-line statement in the current context. |
args |
Print the argument list to the current function. |
p |
Print the value of an expression. |
pp |
Pretty print the value of an expression. |
where |
Print the stack trace, with the most recent call last. |
up |
Move up one frame in the stack. |
down |
Move down one frame in the stack. |
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