Support for PEP 484 Multi-line Comment Function Annotation Syntax
已回答
mypy has been doing a ton of work on their Python 2 support and it's become pretty mature - http://mypy-lang.blogspot.com/2016/07/mypy-043-released.html . It'd be great if Pycharm could use the same set of type annotations for Python 2 method declaration so I could get the value of type checking my code with mypy and get autocomplete in Pycharm. For example:
def send_email(address, # type: Union[str, List[str]]
sender, # type: str
cc, # type: Optional[List[str]]
bcc, # type: Optional[List[str]]
subject='',
body=None # type: List[str]
):
# type: (...) -> bool
"""Send an email message. Return True iff successful."""
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Support for these annotations seems reasonably good, however there's a pretty annoying bug where the last line:
```
# type: (...) -> bool
```
Is interpreted as the `...` operator in Python 2 code, which then classifies an error:
```
Python versions < 3.0 do not support '...' outside of sequence slicings.
```
Even though the `...` is in a type annotation :(
Hi David! I'm sorry for this, the problem is known and the fix in progress, please follow PY-22302.