print 9 + 5
print 9 - 5
print 9 / 5
print 9.0 / 5
print 9 ** 2
print 9 % 4

x = 2+3j
y = 5

print x + y

t = -5
print abs(t)

t = 2+ 3j
print abs(t)

t = 2 + 3j

print t.real
print t.imag

x = "Python primer" # Double quotes
print x
x = 'python primer' # Single quotes
print x
x = '"Go there", he said"' # Quotes of one kind protect the other
print x
x = """
Python primer

10 October 2015
""" # Triple quotes hold multi line strings
print x

# String methods
x = "python primer"
print x.capitalize()
print x.upper()
print x.lower()
print x.center(50, "*")
print x * 2
print "%d + %d"%(5, 4) # Old style string formatting
print "{} + {}".format(5,4) # New style string formatting
print x + 2



x = "python primer"
print x[0]
print x[1]
print x[0:7]
print x[0:10:2]
print x[-1]
print x[-7:-1]
print x[-1:-7:-1]

x[0] = "T" # Will error out since strings are immutable in python

# Lists
x = [1, 2, 3]
print x
y = ["IEEE", "Python", 10, 10, 2015]
print y
print y[0]
y[0]= 'ieee'
print y
print y[0]
print y[-1]
y.append("Calicut")
print y
y.extend([10, 11, 12])
print y
print "Kozhikode" in y
print "Calicut" in y

# Sets - Unique elements, unordered

x = set([])
print x
x = {1, 2, 3}
print x
# print x[0] # This will error out since sets are unordered
print 5 in x
print 3 in x

x.add(10)
print x
x.add(10)
print x
x = {1,2}
y = {2,3}

print x.union(y)
print x.intersection(y)
print x - y

# Dictionaries

x = {"name" : "Noufal",
     "class" : "python",
     "place" : "Calicut"}

print x["name"]
print x["class"]
# print x["date"] # Will not work since there is no key "date"
x["strength"] = 50
print x
print x.keys()
print x.values()
print x.items()

x = "Python"
for i in x:
    print i
    
print "-"*10

x = [1,2,3,4]
for i in x:
    print i
    
for i in range(10):
    print "5 x %d = %d"%(i, i*5)

x = 10
if x > 5:
    print "Yes, it's greater"
else:
    print "Nope. It's lesser"
    
if x > 10:
    print "Too large"
elif x < 5:
    print "Too less"
else:
    print "Just right"
    

# While loop
x = [1,2,3,4,5]
while x:
    print x
    x.pop()
    

# Functions
def double(x):
    return x * 2

print double(10)
print double("abc")
print double([1,2,3])
# print double(dict(x=1, y=2)) # Will error out since you can't multiple a dictionary with a number


def add(first, second):
    return first + second

print add(5, 6)
print add(5)

# Fizz bizz

def fizzbizz(n):
    for i in range(1, n+1):
        if i % 15 == 0:
            print "fizzbizz"
        elif i % 5 == 0:
            print "bizz"
        elif i% 3 == 0:
            print "fizz"
        else:
            print i
            
fizzbizz(20)

def palindrome(s):
    return s == s[::-1]

print palindrome("malayalam")
print palindrome("abba")
print palindrome("Calicut")

def panagram(s):
    for i in "abcdefghijklmnopqrstuvwxyz":
        if i not in s.lower():
            return False
    return True

print panagram("the quick brown fox jumps over the lazy dog")
print panagram("the quick brown fox jumped over the lazy dog")

def freq(s):
    counts = dict()
    for i in s:
        if i in counts:
            counts[i] += 1
        else:
            counts[i] = 1
    
    for i in counts:
        print "{} :: {}".format(i, counts[i])
        
freq("she sells sea shells on the sea shore!")

import math

class Point(object):
    def __init__(self, x, y):
        self.x = x
        self.y = y
        
    def dist(self):
        return math.sqrt(self.x **2 + self.y **2)
    
    def __repr__(self):
        return "Point({}, {})".format(self.x, self.y)
    
    def __add__(self, other):
        return Point(self.x + other.x, self.y + other.y)
        
p0 = Point(3,4)
print p0.x, p0.y

print p0.dist()

#print p0.quad() # I should get 1
#print Point(-2,  3).quad() # I should get 2
#print Point(-2, -3).quad() # I should get 3
#print Point(2,  -3).quad() # I should get 4

print p0
p1 = Point(1, 2)

print p0 + p1

class Shape(object):
    def area(self):
        raise NotImplementedError()
        
    def perimeter(self):
        raise NotImplementedError()
        
class Rectangle(Shape):
    def __init__(self, l, b):
        self.length = l
        self.breadth = b
        
    def area(self):
        return self.length * self.breadth
    
    def perimeter(self):
        return 2*(self.length + self.breadth)

class Square(Rectangle):
    def __init__(self, s):
        self.side = s
        super(Square, self).__init__(s, s)
        
s = Square(5)
print s.area()