101 sec 02 sept 6
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)]
a = 5
print a
5
b = 4
print b
4
c = "Fred"
print type(c)
<type 'str'>
print type(B)
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-8-f8836e7b41e4>", line 1, in <module>
    print type(B)
NameError: name 'B' is not defined
print type(b)
<type 'int'>

print a + b
9

b = b + 3
print b
7
a = 11
print c
Fred

print c + 3
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-15-9ba8c745e183>", line 1, in <module>
    print c + 3
TypeError: cannot concatenate 'str' and 'int' objects
print c*3
FredFredFred

print c + str(3)
Fred3