E1101:Module 'turtle' has no 'forward' member

The turtle module exposes two interfaces, a functional one and an object-oriented one. The functional interface is derived programatically from the object-oriented interface at load time, so static analysis tools can't see it, thus your pylint error. Instead of the functional interface:

import turtle

turtle.forward(100)

turtle.mainloop()

For which pylint generates no-member, try using the object-oriented interface:

from turtle import Screen, Turtle

screen = Screen()

turtle = Turtle()

turtle.forward(100)

screen.mainloop()

This particular import for turtle blocks out the functional interface and I recommend it as folks often run into bugs by mixing both the OOP and functional interaces.