Unreachable mark but it is reachable

[simm4256]

pylance v2021.11.2
python v3.9,6
os windows10 20H2 19042.1348

[erictraut]

Thanks for the bug report. This will be fixed in the next release. In the meantime, you can work around the problem by providing a return type annotation for your function:

def tree(len) -> None:
    ...

[bschnurr]

This issue has been fixed in version 2021.12.0, which we've just released. You can find the changelog here: CHANGELOG.md

[zigomir]

Getting same problem on VSC: Version: 1.63.2, Pylance v2022.1.0 and macOS.

Happens after instantiating factory.base.Factory object from factoryboy 🤷‍♂️

[edit]
I guess it's because this method in BaseFactory class

def __new__(cls, *args, **kwargs):
    """Would be called if trying to instantiate the class."""
    raise errors.FactoryError('You cannot instantiate BaseFactory')

If I comment it out, all code becomes reachable again.

[adrianosmarinho]

Getting same problem on VSC: Version: 1.63.2, Pylance v2022.1.0 and macOS.

Happens after instantiating factory.base.Factory object from factoryboy 🤷‍♂️

[edit] I guess it's because this method in BaseFactory class

def __new__(cls, *args, **kwargs):
    """Would be called if trying to instantiate the class."""
    raise errors.FactoryError('You cannot instantiate BaseFactory')

If I comment it out, all code becomes reachable again.

Hey @zigomir
Same setup here, same problem. Pylance marks my code as unreachable after instantiating a factoryboy object 🤷
It is important to note that the same code was working fine two weeks ago, before I left the office on annual leave.

from api.models import Token
from datetime import datetime
from django.contrib.auth.models import User
from factory.django import DjangoModelFactory


class UserFactory(DjangoModelFactory):
    """
    User Factory to be used on tests.
    """

    password = ""
    is_superuser = False
    username = "test_user"
    first_name = "Test"
    last_name = "User"
    email = "[email protected]"
    is_staff = True
    is_active = True
    date_joined = datetime.utcnow()

    class Meta:
        model = User
        django_get_or_create = ("username", "email", "is_active")


class TokenFactory(DjangoModelFactory):
    """
    Token Factory to be used on our tests
    """

    user = UserFactory()
    name = "test_user_token"
    identifier = "2e42a19593f047e080285e49864b0fb6"
    secret = "6ff2dc141c0841e2a43c25be9ae9b097"

    class Meta:
        model = Token
        django_get_or_create = ("user", "name", "identifier")
        

[erictraut]

@adrianosmarinho, the problem you're seeing is this issue, which will be fixed in the next release.

[adchang21]

I am also encountering this issue, here is a sample of my code.

Environment data

• Language Server version: 2022.7.40
• OS and version: win32 x64
• Python version (and distribution if applicable, e.g. Anaconda):
• python.analysis.indexing: null
• python.analysis.typeCheckingMode: off

Code Snippet

os.chdir(r'C:\Users\example')
path = r'C:\Users\example'
today = str(date.today())
filename = os.path.join(path, 'example_'+ today + '.txt')

ob=Screenshot_Clipping.Screenshot()
chrome_options = Options()
chrome_options.add_argument("--start-maximized")
driver = webdriver.Chrome(options=chrome_options)

driver.get('https://www.google.com/search?q=aardvark')
WebDriverWait(driver, 20).until(EC.visibility_of_element_located((By.XPATH, '//*[@id="fsl"]/a[1]')))
html = driver.page_source
img_url=ob.full_Screenshot(driver, save_path=r'C:\Users\example', image_name='screenshot.png')
print(img_url)

time.sleep(random.randint(2,5))
driver.quit()

with open(filename, 'w', encoding="utf-8") as f:
    f.write(html)

The code after driver.quit() is marked as unreachable, even though it very much is.

[erictraut]

@adchang21, could you provide a self-contained minimal code sample? The sample above references symbols that are presumably imported from somewhere. Am I correct in assuming that you are using the selenium library? If so, are you using the latest version? There is a known bug in earlier versions of selenium that results in this behavior. Try pip install selenium --upgrade and see if that fixes your issue.

[adchang21]

Upgrading selenium fixed it, thank you!

[rwayan]

@adchang21, could you provide a self-contained minimal code sample? The sample above references symbols that are presumably imported from somewhere. Am I correct in assuming that you are using the selenium library? If so, are you using the latest version? There is a known bug in earlier versions of selenium that results in this behavior. Try pip install selenium --upgrade and see if that fixes your issue.

upgraded to version 4.3.0 but it said code unreachable

import rqdatac
rqdatac.init()

# code below will treated as unreacable
print("a")

[erictraut]

@adchang21, it looks like the issue you're hitting is not related to selenium. Your code snippet above references a module called rqdatac. Am I correct in assuming that's a reference to the rqdatac package? If so, which version are you using? The latest version is 2.9.55. When I install that version, I'm not able to repro unreachable code. I'm guessing that you have an older version installed. Please try updating with pip install rqdatac --upgrade.

[erictraut]

This issue is closed. If you got here because you are seeing code that is marked as unreachable by pylance, it is most likely an issue in a library or type stub, not a bug in pylance. If you want help diagnosing the problem, please use the discussion tab.

If you think that it is potentially a bug in pylance, please open a new bug report. Do not use this closed issue. And as with all bug reports, please include a self-contained minimal code example and specify which versions of third-party libraries the code sample imports.