[Python] "ImportError: No module named serial" - after installing pyserial [duplicate]

I'm writing a project in python which should eventually running on LinkIt One IoT device.

I've written some test code to check whether I am able to connect between Arduino IDE to python (I am working with Pycharm).

the test code is:

import serial
import time

arduino = serial.Serial('COM1', 115200, timeout=.1)

time.sleep(1) #give the connection a second to settle

arduino.write("Hello from Python!")

while True:
data = arduino.readline()
if data:
print data.rstrip('\n')


when I am running to code I am getting:

C:\Users\אורי\PycharmProjects\untitled\venv\Scripts\python.exe C:/Users/אורי/PycharmProjects/untitled2/test.py

Traceback (most recent call last):
File "C:/Users/����/PycharmProjects/untitled2/test.py", line 1, in <module>
import serial
ImportError: No module named serial

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