Code from Class sept 6 Sec 01

import sys; print('%s %s' % (sys.executable or sys.platform, sys.version))
Python 2.7.11 | 64-bit | (default, Jun 11 2016, 11:33:47) [MSC v.1500 64 bit (AMD64)]
Type "copyright", "credits" or "license" for more information.

IPython 4.1.2 -- An enhanced Interactive Python.
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.
object?   -> Details about 'object', use 'object??' for extra details.
PyDev console: using IPython 4.1.2

C:\Users\Susan\AppData\Local\Enthought\Canopy\User\python.exe 2.7.11 | 64-bit | (default, Jun 11 2016, 11:33:47) [MSC v.1500 64 bit (AMD64)]

print "hello"
hello

a = 5
b = 4
print b
4

b = 7
print b
7

b = b + 4
print a + b
16

c = "fred"
print c
fred

type(c)
Out[12]: str

type(a)
Out[13]: int

print a + c
Traceback (most recent call last):
  File "C:\Users\Susan\AppData\Local\Enthought\Canopy\User\lib\site-packages\IPython\core\interactiveshell.py", line 2885, in run_code
    exec(code_obj, self.user_global_ns, self.user_ns)
  File "<ipython-input-14-bf5dc6cd00d8>", line 1, in <module>
    print a + c
TypeError: unsupported operand type(s) for +: 'int' and 'str'
print str(a) + c
5fred

print a, b
5 11

print b/a
2

print a, b
5 11

print a + b * 3
38

print (a +b) * 3
48

print c
fred

print c*3
fredfredfred