#

# a = 1

# b = a

# print(b)

#

# c = a + 1

# print(c)

#

# def add(x,y):

#     return x+y

#

# d = add(3,5)

# print(d)

# 弱类型语言

# a = 1

# print(a)

# print(type(a))

# a = 'haha'

# print(a)

# print(type(a))

#

# a = '1'

# b = 'haha'

#

# print(id(a))

# print(id(b))

#

# print(type(1.2))

#

# a = 34124323142143243234234234234234341243231421432432342342342342343412432314214324323423423423423434124323142143243234234234234234341243231421432432342342342342343412432314214324323423423423423434124323142143243234234234234234

# print(type(a))

#

# a = 2 * 3.5

# print(type(a))

#

# a = 3.9

# print(int(a))

#

# a = 5

# print(float(a))

#

# print(chr(98 - 32))

# print(ord('a'))

#

# print(a < 0)

#

# a = 'Mary said, \"I\'m OK\"'

# print(a)

#

# a = '窗含西岭千秋雪\n门泊东吴万里船'

# print(a)

#

# print(r"C:\Program Files\fnord\foo\bar\baz\frozz")

#

# print()

#

# a = [1, 2, 3, 4, 5]

# b = str(a)

# print(b)

# print(type(b))

#

# a = [1.2, 'haha', True, ['a', 'b'], {}, ()]

# b = (1.2, 'haha', True, ['a', 'b'], {}, ())

# c = {'name': 'zhangsan', 'age': 18}

#

# print(None)

# print(type(None))

# def add(x,y):

#     x+y

#

# print(add(1,2))

#

#

#

# a = [1,2,3,4]

# print(id(a))

# a += [5,6]

# a.append(7)

# print(a)

# print(id(a))

# a = [1,2,3,4,5,6,7,8]

# print(id(a))

#

# print(9%2)

# # 地板除

# print(-29.0//10)

#

# a = 1

# b = 1

# print(a is b)

# print(id(a) == id(b))

#

# a = 'haha'

# b = 'haha'

# print (a is b)

#

# a = False

# b = False

# print (a is b)

#

# a = (1,2,3)

# b = (1,2,3)

# print (a is b)

#

# a = '11'

# b = a

# print (a is b)

# a = [1,2,3]

# print(id(a))

# a = a + [4,5]

# print(id(a))

# a += [4,5]

# print(id(a))

#

# a,b,c = 1,2,3

#

# a=2

# b=5

# a,b = b,a

# print(a,b)

#

# print(a>2 and b+2 and b==3)

# print('ll' in 'hello')

# print(1 and 0 and 3 and 4)

# print(1 or 2 or 0 or 4 and 10)

# a = "您账户%s于%d月%d日入账工资，人民币%.2f，%s" % ('4567', 11, 10, 800.00, '欢迎')

# print(a)

#

# a = "您账户{}于{}月{}日入账工资，人民币{}，{}"

# print(a.format('4567', 11, 10, 800.65, '欢迎'))

#

# a = "您账户{account}于{month}月{day}日入账工资，人民币{money}，{adv}"

# a = a.format(account='4567',

#          money=200000.00,

#          adv='xx理财欢迎你',

#          month=12,

#          day=10)

# print(a)

#

a = 'Hello World'

b = 'How are you'

ll = [a, b]

c = '&'.join(ll)

print(c)

a = 1

b = 1

print(id(a) == id(b))

print(a is b)

a = [1, 2]

b = [1, 2]

print(id(a) == id(b))

print(a is b)

c = "very good morning"

d = "very good morning"

print(id(c) == id(d))

c = True

d = True

print(c is d)

e = [1, 2, 3]

f = [1, 2, 3]

print(id(e) == id(f))

print(e == f)

print(e is f)

g = [4, 5, 6]

id1 = id(g)

g.append(7)

id2 = id(g)

print(id1 == id2)