import keyword

print keyword.kwlist
print
print len(keyword.kwlist)

str(12345)

str = 'abc'

str(12345)

#이것은 주석입니다.
import sys #이것도 주석입니다.

if (a == 1) and

a = 1
b = 3
if (a == 1) and \
(b == 3):
    print 'connected lines'

a = 1
b = a

1 + 3 = a

a = 1
a = a + 1

4 == 5

4 == 4

c, d = 3, 4
x = y = z = 0
e = 3.5; f = 5.6

print a, b, c, d, e, f

e, f = f, e
print e, f

a = (b = c + d)

a = 1
type(a)

a = 'dynamic'
type(a)

a = 1
a += 4
a

a -= 3
a

a *= 2+3
a

a = [1,2,3]
b = [10, a, 20]
c = ['x', a, 'y']

print a
print b
print c

a[1] = 1000

print a
print b
print c

a = 1
a = eval('a + 4')
a

eval('a = a + 4')

a = 5
exec('a = a + 4')
a

a = 5
exec 'a = a + 4'
a

s = '''
a = 1
if a > 0 :
    print 'Success'
'''
exec(s)

code = compile('a + 1', '<string>', 'eval')
print type(code)
a = 1
for k in range(10):
    a = eval(code)
    
a

code = compile('a = a + 1', '<string>', 'single')
a = 1
for k in range(10):
    exec(code)

a

s = '''
a = 1
for k in range(10):
    a = a + 1
print a 
'''

code = compile(s, '<string>', 'exec')
exec(code)

name = raw_input('name?')

print name

k = int(raw_input('int : '))

k

i = input('int :')

i

k = input('expr:')

k

print 4+5, 4-2

print 1; print 2

print 1,; print 2

print 12 + 'spam'

print '12' + 'spam'

import pprint 
complicated = ['spam', (1,2,3), ('hanm', 'egg', ('ab', 'cd', ('abc', 'def')))]
complicated = complicated * 3

pprint.pprint(complicated)

print complicated

complicated

print 'Hello World!'

print "Hello World!"

s = "Hello world!"
print s[0]
print s[1]
print s[-1]
print s[-2]

s = "Hello world!"
print s[1:3]
print s[0:5]

s = 'Hello'
print s[1:]
print s[:3]
print s[:]

s = 'abcd'
print s[::2]
print s[::-1]

print 'Hello' + '' + 'World'
print 'Hello' * 3
print '-' * 60

s = 'Hello World'
s[0] = 'h'

s = 'Hello World'
s = 'h' + s[1:]
s

s = 'Hello World'
len(s)

s = 'Hello World'
print 'World' in s
print 'World' not in s

L = [1,2,3]
print type(L)
print
print len(L)
print
print L[1]
print L[-1]
print L[1:3]
print
print L + L
print L * 3

L = range(10)
print L
print L[::2]
print L[::-1]
print 4 in L

L = [1,2,3]

L.append(4)
print L
print
del L[0]
print L
print
L.reverse()
print L
print
L.append(5)
print L
L.sort()
print L

t = (1,2,3)

print len(t)
print
print t[0]
print t[-1]
print t[0:2]
print t[::2]
print
print t + t + t
print t * 3
print
print 3 in t

t = (1,2,3)

t[0] = 100

L = [1,2,3]
L[0] = 100

print L

d = {'one': 'hana', 'two': 'dul', 'three': 'set'}
print d['one']


d = {'one': 'hana', 'two': 'dul', 'three': 'set'}
d['four'] = 'net' # 새 항목의 삽입
print d
d['one'] = 1      # 기존 항목의 값 변경
print d
print 'one' in d  # 키에 대한 멤버쉽 테스트

d = {'one': 1, 'two': 'dul', 'three': 'set', 'four': 'net'}
print d.keys()    # 키만 리스트로 추출함
print d.values()  # 값만 리스트로 추출함
print d.items()   # 키와 값의 튜플을 리스트로 반환함

s = [1,2,3]
s[1] = 10
s

s  = (1,2,3)
s[1] = 10

x = 1
x = 2

l1 = [1,2,3]
l1 = [4,5,6]

l1 = [4,5,6]
l1[0] = 10

print type(3)       #정수

print type(3.3)     #실수

print type('abc')   #문자열

print type(None)    #None 객체, 아무 값도 없다(혹은 아니다)를 나타내는 객체
print
a = None
print a
print type(a)

print type([])      #리스트

print type(())      #튜플

print type({})      #사전(dict)

print type(type({}))   #'type'형

a = 0
L = [1,2,3]
print type(a) == type(0)
print type(L) == type([])
print type(L[0]) == type(0)

import types

print dir(types)

from types import *

print type(123) == IntType
print type('abc') == StringType

x = y = z = 100

del x

y = 200
z = 300

import sys

aaa = 191919
print sys.getrefcount(aaa)

bbb = object()
print sys.getrefcount(bbb)

print sys.getrefcount('foobar')

a = 500
b = a
print id(a)
print id(b)
print
x = 1
y = 1
print id(x)
print id(y)

c = [1,2,3]
d = [1,2,3]
print c is d

a = 500
b = a
print a is b

x = 1
y = 1
print x is y

e = f = [4,5,6]
print e is f

c = [1,2,3]
d = [1,2,3]
c == d

score = 90
if score >= 90:
    print 'Congratulations!!! '

a = 10
if a > 5:
    print 'Big'
else:
    print 'Small'

a = 10
if a > 5: print 'Big'
else: print 'Small'

n = -2
if n > 0:
    print 'Positive'
elif n < 0:
    print 'Negative'
else:
    print 'Zero'

order = 'spagetti'

if order == 'spam':
    price = 500
elif order == 'ham':
    price = 700
elif order == 'egg':
    price = 300
elif order == 'spagetti':
    price = 900
    
print price

order = 'spagetti'
menu = {'spam':500, 'ham':700, 'egg':300, 'spagetti':900}
price = menu[order]
print price

a = 1 # 성공
 a = 1 # 실패

if a > 1:
    print 'big'
     print 'really?'

a = ['cat', 'cow', 'tiger']
for x in a:
    print len(x), x

for x in [1,2,3]:
    print x,

print range(10)

for x in range(10):
    print x,

sum = 0
for x in range(1, 11):
    sum = sum + x
    
print sum

prod = 1
for x in range(1, 11):
    prod = prod * x
    
prod

l = ['cat', 'dog', 'bird', 'pig']
for k, animal in enumerate(l):
    print k, animal

t = ('cat', 'dog', 'bird', 'pig')
for k, animal in enumerate(t):
    print k, animal

d = {'c':'cat', 'd':'dog', 'b':'bird', 'p':'pig'}
for k, key in enumerate(d):
    print k, key, d[key]

for x in range(10):
    if x > 3: break
    print x
    
print 'done'

for x in range(10):
    if x < 8: continue
    print x
    
print 'done'

for x in range(10):
    print x,          # 콤마(,) 때문에 줄이 바뀌지 않는다.
else:
    print 'else block'

print 'done'

for x in range(10):
    break
    print x,
else:
    print 'else block'
    
print 'done'

for x in range(2, 4):
    for y in range(2, 10):
        print x, '*', y, '=', x*y
    print

count = 1
while count < 11:
    print count
    count = count + 1

sum = 0
a = 0
while a < 10:
    a = a + 1
    sum = sum + a
print sum

x = 0
while x < 10:
    print x,          # 콤마(,) 때문에 줄이 바뀌지 않는다.
    x = x + 1
else:
    print 'else block'

print 'done'

x = 0
while x < 10:
    break
    print x,
    x = x + 1
else:
    print 'else block'
    
print 'done'

x = 0
while x < 10:
    if x < 8:
        x = x + 1
        continue
    else:
        print x,
        x = x + 1
    
print 'done'

def add(a, b):
    return a + b

print add(3, 4)

print add([1,2,3], [4,5,6])

def minus(a, b):
    return a - b
print minus(a=12, b=20)
print minus(b=20, a=12)

def incr(x, y=1):
    return x + y

print incr(5)

print incr(5, 10)