2+8

2+3*4

(2+3)*4

type(10)

int

type(1000*2 +4)

int

3.14

3.14

3/2

1.5

type(3/2)

float

10/3

3.3333333333333335

10 % 7

10 ** 2

"learning is fun"

'learning is fun'

type("learning is fun")

str

"EhRT Y$^&$ %$Y $YH RRWYTRT$&$U$@%$&4TRGJG rtTHR"

'ERWYTRT$&$U$@%$&4TRGJG rthRT Y$^&$ %$Y $YH RTHR'

"10 + 90"

'10 + 90'

type("10 + 90")

str

Y$^&$ %$Y $YH RRWYT

      File "<ipython-input-21-453405433204>", line 1
        Y$^&$ %$Y $YH RRWYT
         ^
    SyntaxError: invalid syntax

learning is fun

    ---------------------------------------------------------------------------

    NameError                                 Traceback (most recent call last)

    <ipython-input-22-c7c5f4e3d1ab> in <module>
    ----> 1 learning is fun
    
    NameError: name 'learning' is not defined

my_text = "learning is fun"

my_text

'learning is fun'

x = 10

my_text

'learning is fun'

my_text = "really fun"

my_text

'really fun'

x = 10 + 90

x = x + 50

my_text  = my_text + "!!!"

my_text

'really fun!!!'

1+1

"1" + "1"

'11'

"hello" + " " + "class"

'hello class'

"hello " * 3

'hello hello hello '

"1" + 9

    ---------------------------------------------------------------------------

    TypeError                                 Traceback (most recent call last)

    <ipython-input-40-68ab1afe3be8> in <module>
    ----> 1 "1" + 9
    
    TypeError: can only concatenate str (not "int") to str

s = "1"
x = 9
s+x

    ---------------------------------------------------------------------------

    TypeError                                 Traceback (most recent call last)

    <ipython-input-41-5ff27a2a48f4> in <module>
          1 s = "1"
          2 x = 9
    ----> 3 s+x
    

    TypeError: can only concatenate str (not "int") to str

"hello".upper()

'HELLO'

"hello class have a nice day".title()

'Hello Class Have A Nice Day'

"hello class have a nice day".startswith("nice")

False

type(False)

bool

True

True

"hello class have a nice day".startswith("hello class")

True

sentence = input("give me a sentence: ")
sentence.startswith("hello")

give me a sentence: bye bye

False

song = """
Yeah yeah yeah yeah yeah
Yeah yeah yeah yeah yeah yeah
I think I did it again
I made you believe we're more than just friends
Oh baby
"""

print(song)

Yeah yeah yeah yeah yeah
Yeah yeah yeah yeah yeah yeah
I think I did it again
I made you believe we're more than just friends
Oh baby

print(1,2,3,                  "hello")
print()
print(1,2,3,4,5,6,7,8,9,8,7,6,5,4,3,2,1)

2 3 hello

2 3 4 5 6 7 8 9 8 7 6 5 4 3 2 1

print("""
@
@@
@@@
@@@@
@@@@@
@@@@@@
@@@@@@@
""")

@
@@
@@@
@@@@
@@@@@
@@@@@@
@@@@@@@

for line_number in range(10)
    line = "@" * line_number
    print(line)

@@
@@@
@@@@

list(range(10))

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

len("hello")

len

<function len(obj, /)>

help(len)

Help on built-in function len in module builtins:

len(obj, /)
    Return the number of items in a container.