print("helloworld")

#2-1 2-2
print("----------------\n#2-1 2-2")
message="hello world"
print(message)

message="hello python world"
print(message)

#message="test"
#print(mesage)
print("----------------\n")

name="hell python"
print(name.title())
print(name.upper())
print(name.lower())

first_name="hell"
last_name="python"
print(first_name+" "+last_name)

name=first_name+" "+last_name
new_message=message+" "+name.title()
print(new_message+" aha! new message\n\n") 

print("----------------\n#2-3 to 2-7")
name="Harry Potter"
print("Hi! "+name+", would you like to learn some Python today?")

print(name.upper())
print(name.lower())
print(name.title())

name="Albert Einstein"
words="A person who never made a mistake never tried anything new."
print( name + " once said, " + '"' + words + '"')

name = "\t Albert Einstein \n"
print(name)
print(name.lstrip())
print(name.rstrip())
print(name.strip())
print("----------------\n")

print(3+2)
print(3/2)
print(0.2+0.1)
print(0.1*2)
print(0.1*0.1)
print(0.1**0.1)
print(2**3)

age=23
#message="Happy " + age + "rd Birthday"
print(message)
message="Happy " + str(age) + "rd Birthday"

print("----------------\n#2-8 2-9")
print(5 + 3)
print(2 * 4)
print(16 / 2)
print(9 - 1)

fav_num = 3
print("my fav num is " + str(fav_num))
