>>> import math >>> import random >>> import posixpath as path >>> print(math.sqrt(16)) >>> print(math.cos(math.pi/4)) >>> print(random.choices('abcd',k=8)) >>> print(path.isfile(r'C:Windowsotepad.exe')) >>> from math import pi as PI >>> from os.path import getsize >>> from random import choice >>> r=3 >>> print(round(PI*r*r,2)) >>> print(getsize(r'C:Windowsotepad.exe')) >>> print(choice('Python')) >>> expression1=1+2+3 +4+5 >>> print(expression1) >>> expression2=(1+2+3 +4+5) >>> print(expression2)