import sys


pi = 3
PI = 3.1416
mychar = "s"
mysecondchar = 'c'
mystring = "Fernando"
otrostring = "HOla mundo"
listnumbers = [60,42,1,4,6]
#    index     0  1  2 3 4

if __name__ == "__main__":
    print("variables lesson\n")
    print(f'pi={pi}, PI={PI}, mychar={mychar}, mytext={mysecondchar}, mystring={mystring}, otrostring={otrostring}, ListNUm[3]={listnumbers[3]}\n')
    print(listnumbers[::-1])