List Of Class Method Not Autocompleting In PyCharm

I am new to python and I have a question about autocompletion of method calls on an object within a list using Pycharm. I have a class called foo(): class foo(object): def __i

Solution 1:

The reason is that python has dynamic typing. There is no constraint that myList must contain ONLY foo objects. So PyCharm can't know that myList[0] is a foo to give you the autocomplete for foo (that's only known at runtime).

Take this example:

class foo(object):

    def __init__(self):
        self.num = 10


    def getNum(self):
        return self.num

class bar(object):

    def __init__(self):
        self.num = 10


    def getNum2(self):
        return self.num

myList = []
myList.append(foo())
myList.append(bar())
print(myList[0])

PyCharm doesn't know whether to give you the autocomplete for foo() or bar() so it doesn't give you either.

The last case regarding x works because you explicitly assigned x as a foo object, so Pycharm knows and gives you the autocomplete for foo.

Solution 2:

Im pretty sure this is an IDE issue as it may not trace the variable all the way back to its original calls until actually ran. so with you setting x directly to foo() was one assignment but setting y = myList[0] and then getting the object at myList[0] which would be another call back to the variable if that makes sense.

Solution 3:

From python 3.5, you can use typing which provides advanced typing feature that pyCharm can use to suggest autocompletion.

see https://stackoverflow.com/a/59971921/2696355 for an example and the typing doc for more information