python turtle module in pycharm error

[sajley]

hi guys  

import turtle
def draw_star(size,color):
    count = 0
    angle = 144
    sum1 = 0
   # turtle.bgcolor='black'
    turtle.bgcolor = 'black'
    turtle.pen='yellow'
    while count <= 5:
        for i in (1,5):
            sum1=sum1+45
            if count<5:
                turtle.forward(sum1)
                turtle.right(angle)
            if count>5:
                turtle.forward (-size)
                turtle.right (angle)
        count += 1
    return

draw_star(200,"blue")

This code run in python idle without error. but pycharms cant run this code      

pycharm error:

Traceback (most recent call last):
  File "C:/Users/3DVFX/PycharmProjects/untitled4/turtle.py", line 1, in <module>
    import turtle
  File "C:\Users\3DVFX\PycharmProjects\untitled4\turtle.py", line 21, in <module>
    draw_star(200,"blue")
  File "C:\Users\3DVFX\PycharmProjects\untitled4\turtle.py", line 13, in draw_star
    turtle.forward(sum1)
AttributeError: module 'turtle' has no attribute 'forward'

[snippsat]

Rename turtle.py.
Name is used in bye python to run the module eg ‪C:\Python35\Lib\turtle.py

[sajley]

Rename turtle.py.
Name is used in bye python to run the module eg ‪C:\Python35\Lib\turtle.py

i rename turtle.py to myturtle.py   

Thankyou