Python 3.7.0 (v3.7.0:1bf9cc5093, Jun 27 2018, 04:59:51) [MSC v.1914 64 bit (AMD64)] on win32
Type "copyright", "credits" or "license()" for more information.
>>> x =42
>>> id(x)
140715097643328
>>> y =42
>>> id(y)
140715097643328
>>> x =5
>>> id(x)
140715097642144
>>> y
42
>>> id(y)
140715097643328
>>> a = [2, 4, 6]
>>> type(a)
<class 'list'>
>>> id(a)
2541285801416
>>> a[1] =7
>>> a
[2, 7, 6]
>>> for k in a:
	print(id(k))

	
140715097642048
140715097642208
140715097642176
>>> a[1] =0
>>> id(a[1])
140715097641984
>>> x
5
>>> y
42
>>> a
[2, 0, 6]
>>> a
[2, 0, 6]
>>> x
5
>>> y
42
>>> a
[2, 0, 6]
>>> def my_function(c):
	print(a)
	d= 2
	print(d)
	print(c)

	
>>> my_function(4)
[2, 0, 6]
2
4
>>> a
[2, 0, 6]
>>> c
Traceback (most recent call last):
  File "<pyshell#33>", line 1, in <module>
    c
NameError: name 'c' is not defined
>>> d
Traceback (most recent call last):
  File "<pyshell#34>", line 1, in <module>
    d
NameError: name 'd' is not defined
>>> d = 20
>>> x
5
>>> y
42
>>> a
[2, 0, 6]
>>> d
20
>>> my_function(y)
[2, 0, 6]
2
42
>>> d
20
>>> d
20
>>> def fn(w):
	print(w)
	print(d)
	d = 4
	print(d)

	
>>> fn(y)
42
Traceback (most recent call last):
  File "<pyshell#49>", line 1, in <module>
    fn(y)
  File "<pyshell#48>", line 3, in fn
    print(d)
UnboundLocalError: local variable 'd' referenced before assignment
>>> def fn2(w):
	print(w)
	print(d)

	
>>> fn2(y)
42
20
>>> def square(x)
SyntaxError: invalid syntax
>>> def square(x):
	return(x**2)

>>> square(42)
1764
>>> def cube(x):
	return(x**3)

>>> cube(10)
1000
>>> from math import sqrt
>>> sqrt(101)
10.04987562112089
>>> from graphics import *
>>> p1 = Point(5, 10)
>>> p2 = Point(7, 20)
>>> p1.getX()
5.0
>>> p1.getY()
10.0
>>> distance(p1, p2)
Traceback (most recent call last):
  File "<pyshell#71>", line 1, in <module>
    distance(p1, p2)
NameError: name 'distance' is not defined
>>> q = Point(0, 6)
>>> distance(p1, q)
Traceback (most recent call last):
  File "<pyshell#73>", line 1, in <module>
    distance(p1, q)
NameError: name 'distance' is not defined
>>> a, b = 5, 7
>>> a
5
>>> b
7
>>> def sumdiff(x, y):
	return x + y, x - y

>>> a
5
>>> b
7
>>> sumdiff(a, b)
(12, -2)
>>> w = sumdiff(a, b)
>>> w
(12, -2)
>>> r, s = sumdiff(a, b)
>>> r
12
>>> s
-2
>>> r, s, t = sumdiff(a, b)
Traceback (most recent call last):
  File "<pyshell#88>", line 1, in <module>
    r, s, t = sumdiff(a, b)
ValueError: not enough values to unpack (expected 3, got 2)
>>> t = sumdiff(a, b)
>>> t
(12, -2)
>>> t[0]
12
>>> t[1]
-2
>>> def changeme(c):
	 c = c+2
	 print(c)

	 
>>> s
-2
>>> changeme(s)
0
>>> s
-2
>>> def change2(x): #x is a list
	for k in range(len(x)):
		x[k] = k+2

		
>>> w = [7, 6, 5, 2]
>>> change2(w)
>>> w
[2, 3, 4, 5]
>>>