Say I'm working with the 'requests' Python library.
req = requests.get("http://google.com")
Now after this, if I type req., I'm supposed to get a list of all methods I can access. But for some reason I don't, even if I manually press Ctrl+Space.
If I try this in iPython, I get autocomplete recommendations. Even if I try it via the built in Python console in PyCharm, I get recommendations.
Why's this happening?
As Python is a dynamically typed language, you need to ensure it can work out what type things are, and inspect on the libraries on your system correctly. Try to make sure it's obvious what type the object is in your code.
One good way as of PyCharm 2.7 (back when versions were numbers) is to enable runtime type detection - PyCharm hooks into your program while it runs (while debugging), and checks the types of variables as they are used.
You can enable this by going to settings, going to the "Build, Execution, Deployment" section and then the "Python Debugger" subsection and enabling "Collect run-time types information for code insight".
Obviously it is worth noting that this isn't perfect - if you make changes, this won't be updated til the code is executed, and it can only tell you about values it has seen - other code paths you haven't tried could set other types.
You can also 'tell' PyCharm by using Epydoc or Sphinx style docstrings that contain information about parameter and return value types. PyCharm will use these to improve it's inspections.
Python also gained support for function annotations as of Python 3. These can be used for type hints as per PEP 484. See the typing module for more. This is more formal, so it can also be used for tools like mypy which a type checker that can programmatically check these types for consistency, giving Python a TypeScript-style optional static typing.
Python is a dynamically typed language, which means that the "get" function does not declare its return type. When you're entering code in IPython or in the PyCharm console, the code is actually being executed, and it's possible to inspect the object instance in the running interpreter and to get the list of its methods. When you're entering code in PyCharm or in any other Python IDE, it is not executed, and it's only possible to use static analysis to infer the return type of the method. This is not possible in all cases.
PyCharm has no idea what the dict contains if you fill it dynamically. So you have to hint PyCharm about the keys of dict beforehand. Prodict does exactly this to hint PyCharm, so you get code completion.
First, if you want to be able to access the response object, then you have to get a json response and convert it to dict. That's achieved with .json() method of requests like this:
response = requests.get("https://some.restservice.com/user/1").json()
OK, we loaded it to a dict object, now you can access keys with bracket syntax:
print(response['name'])
Since you ask for auto code completion, you certainly need to hint PyCharm about the keys of dict. If you already know the respone schema, you can use Prodict to hint PyCharm:
class Response(Prodict):
name: str
price: float
response_dict = requests.get("https://some.restservice.com/user/1").json()
response = Response.from_dict(response_dict)
print(response.name)
print(response.price)
In the above code, both name and price attributes are auto-complated.
If you don't know the schema of the response, then you can still use dot-notation to access dict attributes like this:
response_dict = requests.get("https://some.restservice.com/user/1").json()
response = Prodict.from_dict(response_dict)
print(response.name)
But code-completion will not be available since PyCharm can't know what the schema is.
What's more is, Prodict class is derived directly from dict, so you can use it as dict too.
This is the screenshot from Prodict repo that illustrates code completion:
Disclaimer: I am the author of Prodict.
if will just detect methods or variables and... with write some part of it:
File->Setting -> Editor -> General -> Code Completion
in top of opened window , unCheck [ Mach Case ]
It's an old question but probably all the provided answers missed the mark by a margin as wide as Sun's distance to Betelgeuse (none of the answers is accepted and #user1265125 is an active guy with 8 yrs here and more cred than me).
As it happens, I've just had exactly the same problem as OP and the solution was:
A NON-ASCII CHAR SOMEWHERE IN THE PROJECT'S FOLDER PATH
Seriously, PyCharm devs...[doubleFacepalm]
In my case the solution is to reset the settings, everething else wasn`t working for me.
"From the main menu, select File | Manage IDE Settings | Restore Default Settings.Alternatively, press Shift twice and type Restore default settings."
I had a similar problem. Only functions I had already used were suggested and only as plain text and not recognised as methods.
What fixed that for me was deleting the /.idea folder in the project directory. (Afterwards you will have to set your run configurations again)
With the latest version update to 2022.2, even auto-complete stopped working for me. After quite a bit of reading articles, I just found the https://youtrack.jetbrains.com/issue/PY-50489 issue which was the root problem. The old plugins were pending update, after that, the code completion issue was fixed.
So, try and check if you are facing the same problem, if the plugins are up to date in Settings —> Plugins.
Related
How can I make VS code detect incorrect argument names?
def test_function(name1, name2, name3):
print(name1)
print(name3)
print(name2)
test_function(name1=1, name2=2, name4=4)
Currently, VS code doesn't flag this as an error. Detecting this would be very useful since argument names change. Otherwise you get an error at run time which is far too late.
VS code is a text editor that one can use to write code in multiple languages but is not a Python interpreter. What you can do is install an extension to do that. For example: Python from Microsoft, has a linter that shows you what problems your code has, including the kind of problem you're describing. Make sure you read the docs to configure it correctly.
When writing a search, right after instantiating the actual Search object, auto complete works as expected. After using the query method, I lose the auto-complete.
If i write the code ignoring the fact that intellisense is not suggesting anything, it works ok! (assuming i wrote it correctly)
What am I doing wrong here?
To workaround this, i have a variable commented... if i need auto-complete, i uncomment it, check the auto-complete, and paste it on the appropriate spot...
I'm using PyCharm Community Edition 4.5.4, and I hate how it notifies me of every little "mistake" I make even when I have full intention of fixing it within 30 seconds.
My style is to kind of write everything at once (instead of finishing one thing before moving to the other), and thus every second word in my code gets highlighted as variable 'x' is not used or Unresolved reference 'x' because I already moved to an other section of my code, intenting to finish the for loop later. If I do something like:
for x in my_list:
pass
And then move to define my_list on top of the file, it will instantly highlight Local variable 'x' is not used. I wish to write my whole code freely, and then after hitting save, I wanna know what mistakes I made.
Is there any way to disable the PEP8 checker, so it would only check when I actually save the file, instead of when I type anything at all?
I have had problems with this issue too.
Unfortunately, there seems to be no documented way of doing what you're requesting. The PyCharm Articles on Code Inspection and Configuring Inspections really don't hint at any such possibility.
Additionally the config file in ~/.PyCharm40/config/inspection/Default.xml isn't what you would call rich in options (note: I have no idea if more options exist, couldn't really find appropriate documentation).
Since pep8.py is apparently ran continuously as a background process in PyCharm, I also checked whether a configuration of these processes was possible. Unfortunately (again), no useful results were found.
To make things worse, there seems to be no relevant plugin available in their plugin repository to allow for further tweaking of the inspection tool.
The other option I tried was by changing the settings in PyCharm and resort to manual calls to pep8. I unselected the inspections for pep8 from Settings | Editor | Inspections | Python tab and then ran the manual inspection by pressing Ctrl + Alt + Shift + I and entering the two pep options. It does not seem to catch the same coding convention errors.
You probably have two options now, one is switching to another IDE as Adam Smith suggested (or noted, actually) and second is trying to maybe get some help on the PyCharm forum.
I have successfully achieved this using the method documented at Run IPython Notebook in Iframe from another Domain . However, this required editing the user config file. I was really hoping to be able to set this up via the command-line instead (for reasons).
http://ipython.org/ipython-doc/1/config/overview.html indicates that configuration via the command line is possible. However, all the examples are for simple true/false value assignment. To set the server up to allow embedding, it is necessary to set a value inside a dictionary. I can't work out how to pass a dictionary in through the command-line.
Another acceptable option would be a configuration overrides file.
Some people will wonder -- why all this trouble!?!
First of all, this isn't for production. I'm trying to support non-developers by writing a web-based application which integrates Ipython notebooks within it using iframes. Despite being on the same machine, it appears that the different port number used is enough to mean that I can't do simple iframe embedding without setting the x-frame insecurity bit.
Being able to do this via the command line lets me set the behaviour in the launch script rather than having to bundle a special configuration file inside my app, and also write an installer.
I really hope I've make the question clear enough! Thanks for any and all suggestions and help!
Looking over the IPython source for the loaders, it seems like it will execute whatever python code you put on the right hand side. I've not tested it, but based on the link you provided, you can probably pass something like
--NotebookApp.webapp_settings=dict('headers'=dict('X-Frame-Options'='ALLOW-FROM https://example.com/'))
In visual studio, I could just press ctrl+spacekey and the methods appeared. In Geany is there a way for me to get this functionality?
No, because is Python is dynamically typed language and quite hard to achieve that. Python plugins for netbeans do that partially, but I believe such plugin is not in geany developers plans. There are different things to be done ;-)
However, geany provides some completions support. First, it analyzes your imports in a file and uses it in completions; furthermore it completes functions from the std library. It also analyzes all you open files for suggestions, although you may need to apply it in preferences. Also you can get call tips, when you hit Ctrl+Shift+Space, which not everyone know about. They are quite good, because they appear in form <Class>.<method>(<args>), which is very helpful.
shortcut ctrl+space works for me. also, you can setup autocomplete suggestion length (ie how many letters you must type before the autocomplete tooltip pops up automatically - http://www.geany.org/manual/current/#editor-completions-preferences ).
this works only for method names. if i want to see the options for method parameters, i must type bracket ( after the method full name.