Python 3.6.1
>>> 7+3
10
>>> 10-1
9
>>> 10*2
20
>>> 10**2
100
>>> 10/3
3.3333333333333335
>>> 10//3
3
>>> 10 % 3
1
>>> a = 10 / 3
>>> a
3.3333333333333335
>>> b = a
>>> b
3.3333333333333335
>>> print('hi')
hi
>>> print(a)
3.3333333333333335
>>> print(a + b)
6.666666666666667
>>> input('Whats your fav class')
Whats your fav classCS101
'CS101'
>>> %cd /Users/jgrant/class/sp.2018/cs101
>>> %Run 20180215.py
>>> %Run 20180215.py
10
>>> %Run 20180215.py
10
a
>>> a =   5  +     10
>>> a
15
>>> 'hi'
'hi'
>>> a = 'hi'
>>> a
'hi'
>>> a[0]
'h'
>>> a[1]
'i'
>>> a[2]
Traceback (most recent call last):
  File "<pyshell>", line 1, in <module>
IndexError: string index out of range
>>> a[01]
  File "<pyshell>", line 1
    a[01]
       ^
SyntaxError: invalid token

>>> a = 'Welcome to CS101'
>>> a
'Welcome to CS101'
>>> len(a)
16
>>> a[0]
'W'
>>> a[15]
'1'
>>> a[16]
Traceback (most recent call last):
  File "<pyshell>", line 1, in <module>
IndexError: string index out of range
>>> a[-1]
'1'
>>> a[-2]
'0'
>>> a[2:]
'lcome to CS101'
>>> a
'Welcome to CS101'
>>> a[0:6]
'Welcom'
>>> a[0:7]
'Welcome'
>>> a[:7]
'Welcome'
>>> a[11:]
'CS101'
>>> a
'Welcome to CS101'
>>> a[8]
't'
>>> a[7]
' '
>>> a[0:]
'Welcome to CS101'
>>> a[0:1]
'W'
>>> a[0:7]
'Welcome'
>>> a = "it's a problem"
>>> a
"it's a problem"
>>> a = "Hello \"Grant\""
>>> a
'Hello "Grant"'
>>> a = 'Hello\n Jason'
>>> a
'Hello\n Jason'
>>> print(a)
Hello
 Jason
>>> a = "Hello\n Jason"
>>> print(a)
Hello
 Jason
>>> a = '3.2'
>>> a
'3.2'
>>> a = input("What is your favorite number: ")
What is your favorite number: 12
>>> a
'12'
>>> a = a * 3
>>> a
'121212'
>>> a = 'HA'
>>> a  = a * 8
>>> a
'HAHAHAHAHAHAHAHA'
>>> a = input("What is your favorite number: ")
What is your favorite number: 5
>>> a
'5'
>>> type(a)
<class 'str'>
>>> int(a)
5
>>> b = int(a)
>>> b
5
>>> type(b)
<class 'int'>
>>> float(a)
5.0
>>> a = input("What is your favorite number: ")
What is your favorite number: 7
>>> a
'7'
>>> a = int(a)
>>> a = a * 3
>>> a
21
>>> a = input("What is your favorite number: ")
What is your favorite number: seven
>>> a = int(a)
Traceback (most recent call last):
  File "<pyshell>", line 1, in <module>
ValueError: invalid literal for int() with base 10: 'seven'
>>> a = 10
>>> a > 11
False
>>> a < 11
True
>>> b=a<11
>>> b
True
>>> a == 10
True
>>> a = “This is my String”
  File "<pyshell>", line 1
    a = “This is my String”
            ^
SyntaxError: invalid character in identifier

>>> a = 'This is my String'
>>> a[-1]
'g'
>>> a[-2]
'n'
>>> a[-2:]
'ng'
>>> a[:-2]
'This is my Stri'
>>> name = "ProfGrant"
>>> Name = "ProfJGrant"
>>> name
'ProfGrant'
>>> Name
'ProfJGrant'
>>> name1 = 'CS101"
  File "<pyshell>", line 1
    name1 = 'CS101"
                  ^
SyntaxError: EOL while scanning string literal

>>> name1 = 'CS101'
>>> 1name = 'CS101'
  File "<pyshell>", line 1
    1name = 'CS101'
        ^
SyntaxError: invalid syntax

>>> name_1 = 'CS101'
>>> round(6.4)
6
>>> round(6.6)
7
>>> "one"+"two"
'onetwo'
>>> a = "two"
>>> b = "one"
>>> a+b
'twoone'
>>> _a
Traceback (most recent call last):
  File "<pyshell>", line 1, in <module>
NameError: name '_a' is not defined
>>> _a = 1
>>>