print([i.lower() for i in "HELLO"]) Y = [2, 5J, 6]
Y.sort() import numpy as np
a = np.array([1,2,3,5,8])
b = np.array([0,3,4,2,1])
c = a + b
c = c * a
print(c[2]) f = open("test.txt" , "w")
>>> f.write(345)