my_string ='hello'
print(my_string)

my_string="hello"
print(my_string)

my_string='''hello'''
print(my_string)

#triple quotes string can be extend multiple lines 
my_string="""hello,welcome to 
            the world of python"""
print(my_string)





b="welcometopython"
print('b[9:15]=',b[9:15])

b="welcometopython"
print('b[-6:15]=',b[-6:15])

b="welcometopython "
print('b[-7:-1]=',b[-7:-1])

b="welcome to python "
print('b[-7:17]=',b[-7:17])

a="i am"
b="ironman"
s=a+" "+b
print(s)




my_string="welcome to python"
del my_string
print(my_string)





