Python 3.4.1 (v3.4.1:c0e311e010fc, May 18 2014, 10:38:22) [MSC v.1600 32 bit (Intel)] on win32
Type "copyright", "credits" or "license()" for more information.
>>> list()
[]
>>> p = Person()
Traceback (most recent call last):
  File "<pyshell#1>", line 1, in <module>
    p = Person()
NameError: name 'Person' is not defined
>>> a = [1,2,3]
>>> b = [4,5]
>>> a
[1, 2, 3]
>>> b
[4, 5]
>>> b.append(6)
>>> b
[4, 5, 6]
>>> a
[1, 2, 3]
>>> a
[1, 2, 3]
>>> c = a
>>> c
[1, 2, 3]
>>> a
[1, 2, 3]
>>> c.append(4)
>>> c
[1, 2, 3, 4]
>>> a
[1, 2, 3, 4]
>>> del a
>>> a
Traceback (most recent call last):
  File "<pyshell#17>", line 1, in <module>
    a
NameError: name 'a' is not defined
>>> c
[1, 2, 3, 4]
>>> del c
>>> c
Traceback (most recent call last):
  File "<pyshell#20>", line 1, in <module>
    c
NameError: name 'c' is not defined
>>> a
Traceback (most recent call last):
  File "<pyshell#21>", line 1, in <module>
    a
NameError: name 'a' is not defined
>>> a = [1,2,3]
>>> c = a
>>> c.append(4)
>>> a
[1, 2, 3, 4]
>>> c
[1, 2, 3, 4]
>>> del a
>>> c
[1, 2, 3, 4]
>>> c.append(5)
>>> c
[1, 2, 3, 4, 5]
>>> x = 15
>>> x += 1
>>> x = 15
>>> x = x + 1
>>> class SimpleClass:
	var1 = 1
	field2 = 'cat'
	def set_var1(self, value):
		print('inside set_var1')
		self.var1 = value
	def method1():
		print('method1')

	
>>> a = SimpleClass()
>>> b = SimpleClass
>>> c = b()
>>> type(a)
<class '__main__.SimpleClass'>
>>> type(b)
<class 'type'>
>>> type(c)
<class '__main__.SimpleClass'>
>>> type(SimpleClass)
<class 'type'>
>>> datatype = int
>>> med_val = 15.3
>>> datatype(med_val)
15
>>> datatype = float
>>> datatype(med_val)
15.3
>>> a
<__main__.SimpleClass object at 0x0458DE90>
>>> a.set_var1
<bound method SimpleClass.set_var1 of <__main__.SimpleClass object at 0x0458DE90>>
>>> a.set_var1(15)
inside set_var1
>>> a.var1
15
>>> dir(SimpleClass)
['__class__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__', '__init__', '__le__', '__lt__', '__module__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__', 'field2', 'method1', 'set_var1', 'var1']
>>> z = None
>>> a.set_var1(a, 15)
Traceback (most recent call last):
  File "<pyshell#62>", line 1, in <module>
    a.set_var1(a, 15)
TypeError: set_var1() takes 2 positional arguments but 3 were given
>>> a.method1()
Traceback (most recent call last):
  File "<pyshell#63>", line 1, in <module>
    a.method1()
TypeError: method1() takes 0 positional arguments but 1 was given
>>> ================================ RESTART ================================
>>> 
Traceback (most recent call last):
  File "C:/Users/mil28/Desktop/SimpleClass.py", line 13, in <module>
    a.set_field2('dog')
  File "C:/Users/mil28/Desktop/SimpleClass.py", line 10, in set_field2
    self.field2 = value
AttributeError: 'str' object has no attribute 'field2'
>>> ================================ RESTART ================================
>>> 
name = Joel
>>> ================================ RESTART ================================
>>> 
name = Joel
Traceback (most recent call last):
  File "C:/Users/mil28/Desktop/Person.py", line 10, in <module>
    baby = Person()
TypeError: __init__() missing 1 required positional argument: 'name'
>>> ================================ RESTART ================================
>>> 
name = Joel
age = 60
>>> ================================ RESTART ================================
>>> 
name = Joel
age = 60
>>> ================================ RESTART ================================
>>> 
Traceback (most recent call last):
  File "C:/Users/mil28/Desktop/Person.py", line 13, in <module>
    joel = Person('Joel', -4)
  File "C:/Users/mil28/Desktop/Person.py", line 8, in __init__
    raise ValueError('age must be positive number')
ValueError: age must be positive number
>>> ================================ RESTART ================================
>>> 
name = Joel
age = -4
>>> ================================ RESTART ================================
>>> 
name = Joel
age = -4
>>> ================================ RESTART ================================
>>> 
name = Joel
Traceback (most recent call last):
  File "C:/Users/mil28/Desktop/Person.py", line 16, in <module>
    print('age =', joel.__age)
AttributeError: 'Person' object has no attribute '__age'
>>> ================================ RESTART ================================
>>> 
name = Joel
Traceback (most recent call last):
  File "C:/Users/mil28/Desktop/Person.py", line 19, in <module>
    print('age =', joel.__age)
AttributeError: 'Person' object has no attribute '__age'
>>> ================================ RESTART ================================
>>> 
name = Joel
Traceback (most recent call last):
  File "C:/Users/mil28/Desktop/Person.py", line 19, in <module>
    print('age =', joel.__age)
AttributeError: 'Person' object has no attribute '__age'
>>> ================================ RESTART ================================
>>> 
name = Joel
Joel , 60
Traceback (most recent call last):
  File "C:/Users/mil28/Desktop/Person.py", line 20, in <module>
    print('age =', joel.__age)
AttributeError: 'Person' object has no attribute '__age'
>>> ================================ RESTART ================================
>>> 
name = Joel
Joel , 60
age = -4
Joel , 60
>>>