import math_prac
import cmath
print(dir(math_prac))

print(cmath.sqrt(-1))

print('M' not in 'a')

tup1 = ('physics', 'chemistry', 1997, 2000)
tup2 = (1, 2, 3, 4, 5 )
tup3 = "a", "b", "c", "d"

print(tup3)