Before:
```
C:\dev\tmp>py -2 -m flask run
Traceback (most recent call last):
File "C:\Python27\lib\runpy.py", line 174, in _run_module_as_main
"__main__", fname, loader, pkg_name)
File "C:\Python27\lib\runpy.py", line 72, in _run_code
exec code in run_globals
File "c:\dev\sourcetree\flask\flask\__main__.py", line 15, in <module>
main(as_module=True)
File "c:\dev\sourcetree\flask\flask\cli.py", line 523, in main
cli.main(args=args, prog_name=name)
File "c:\dev\sourcetree\flask\flask\cli.py", line 383, in main
return AppGroup.main(self, *args, **kwargs)
File "C:\Python27\lib\site-packages\click\core.py", line 697, in main
rv = self.invoke(ctx)
File "C:\Python27\lib\site-packages\click\core.py", line 1066, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File "C:\Python27\lib\site-packages\click\core.py", line 895, in invoke
return ctx.invoke(self.callback, **ctx.params)
File "C:\Python27\lib\site-packages\click\core.py", line 535, in invoke
return callback(*args, **kwargs)
File "C:\Python27\lib\site-packages\click\decorators.py", line 64, in new_func
return ctx.invoke(f, obj, *args[1:], **kwargs)
File "C:\Python27\lib\site-packages\click\core.py", line 535, in invoke
return callback(*args, **kwargs)
File "c:\dev\sourcetree\flask\flask\cli.py", line 433, in run_command
app = DispatchingApp(info.load_app, use_eager_loading=eager_loading)
File "c:\dev\sourcetree\flask\flask\cli.py", line 153, in __init__
self._load_unlocked()
File "c:\dev\sourcetree\flask\flask\cli.py", line 177, in _load_unlocked
self._app = rv = self.loader()
File "c:\dev\sourcetree\flask\flask\cli.py", line 238, in load_app
rv = locate_app(self.app_import_path)
File "c:\dev\sourcetree\flask\flask\cli.py", line 91, in locate_app
__import__(module)
File "C:\dev\tmp\error.py", line 1, in <module>
import whatisthisidonteven
ImportError: No module named whatisthisidonteven
```
After:
```
C:\dev\tmp>py -2 -m flask run
Usage: python -m flask run [OPTIONS]
Error: There was an error trying to import the app (error):
Traceback (most recent call last):
File "c:\dev\sourcetree\flask\flask\cli.py", line 91, in locate_app
__import__(module)
File "C:\dev\tmp\error.py", line 1, in <module>
import whatisthisidonteven
ImportError: No module named whatisthisidonteven```
* Don't rely on X-Requested-With for pretty print json response
* Fix test cases for pretty print json patch
* Fix gramma error in docs for pretty print json config
* Add changelog for JSONIFY_PRETTYPRINT_REGULAR
* Test cache argument of Request.get_json
* Ignore cache on request.get_json(cache=False) call
Removes usage of `_cached_json` property when `get_json` is called with
disabled cache argument. (closes#2087)
It is entirely sufficient to walk the MRO of the exception class, no need to check for classes re-appearing later on, no need to add the MRO of any superclass.
* Python refuses point-blank to create a class with a circular MRO.
* All classes in a superclass MRO *already* appear in the MRO of the derived type. Re-adding the contents of a superclass MRO is doing double work.
* Add init to FlaskClient
This addresses #1467. The init in the subclass
can now take in `environ_base`, which will then get
passed to `make_test_environ_builder` and to
`EnvironBuilder` via keyword args.
This should provide the default environment capability
on `app.test_client()` init.
* Add kwarg `environ_base` to `make_test_environ_builder` call
This change now passes `environ_base` from either
`kwargs` in `FlaskClient.open` or `FlaskClient.environ_base`
if passed into the init.
* Fix assignment reference typo
* Add default `environ_base` to `FlaskClient.__init__`
* Set default kwargs for `environ_base` in `FlaskClient.open`
* Remove specific environ_base kwarg since its in kwargs
* Add docstring to FlaskClient detailing environ_base
* Document app.test_client default environ in CHANGES
* Re-word environ_base changes in FlaskClient docstring
* Add client.environ_base tests
* Mention preset default environ in `app.test_client`
* Add versionchanged directive to docstring in FlaskClient
* Remove `-a/--app` from Quickstart documentation
As mentioned in #2009, simplifying the CLI saw the removal of the `-a/--app` flag. Therefore, the only way to specify the module to import is by setting `FLASK_APP`.
* Remove misleading `either` from CLI help
The CLI help details how to run the application, but still uses the phrasing "either through the `FLASK_APP`...". This likely is an artifact from when `-a/--app` was still present in the CLI.
