3.

a:
while True:
??? s = raw_input('變量名為:')
??? if s == 'exit':
??????? print '退出'
??????? break
??? #判斷是否由字母或下劃線組成
??? if s[0].isalpha() or s[0] == '_':
??????? for i in s[1:]:
??????????? if not (i.isalnum() or i == '_'):
??????????????? print '%s變量名不合法 ' % s
??????????????? break
??????? else:
??????????? print '%s 變量名合法' % s
??? else:
??????? print '%s變量名不合法' % s

b:
count = 0
for i in range(1, 100):
??? if i % 2 == 0:
??????? count -= i
??? else:
??????? count += i
print count

?

c:
num = range(1, 13)
i = 1
while i < 13:
??? if (i == 6 or i == 10):
??????? print ' ',
??? else:
??????? print i,
??? i += 1

h:

li = ['frdgrfgdsHHJJ', 'cdfregHHHJDGF']
new_li = []
for i in li:
??? new_li.append(i.lower())

print(new_li)

7.

li=['happy','lucky','linux']
print len(li)
li.append('seven')
print li
li.insert(0,'Tony')
print li
li[1]='Kelly'
print li
print li.pop(1)
print li
li.pop(2)
print li
print li[::-1]
print li

8.

dic = {'k1': 'v1', 'k2': 'v2', 'k3': [11, 22, 33]}

# 1.

for i in dic:
???? print(i)

# 2.
?for v in dic.values():
???? print(v)

?# 3.
?for k in dic:
??? print(k, dic[k])

?# 4.
?dic['k1'] = 'harry'
?print(dic)

?# 5.
?dic['k3'].append('44')
?print(dic)

# 6.
dic['k3'].insert(0, 18)
print(dic)

9.

s = raw_input('請輸入英文句子:')
s_new = s.split()

dict = {}

for item in s_new:
??? if item not in dict:
??????? dict[item] = 1
??? else:
??????? dict[item] += 1
print dict

10.

def fun(set):
??? bigger = []
??? smaller = []
??? for i in set:
??????? if i < 66:
??????????? smaller.append(i)
??????? else:
??????????? bigger.append(i)
??? dic = {'k2': smaller, 'k1': bigger, 'k2': smaller}
??? print(dic)

list = [11, 22, 33, 44, 55, 66, 77, 88, 99, 90]
fun(list)

12.

i=1
while i<=9:
??? j=1
??? while j<=i:
??????? print '%d*%d=%d\t'%(i,j,i*j),
??????? j+=1
??? print ''
??? i+=1

13.

num1 = int(raw_input('請輸入第一個數：'))
num2 = int(raw_input('請輸入第二個數：'))
min_num = min(num1, num2)
for i in range(1, min_num + 1):
??? if num1 % i == 0 and num2 % i == 0:
??????? biger_count = i
smaller_count = (num1 * num2) / biger_count

print '最大公約數為：%d' % biger_count
print '最小公倍數為：%d' % smaller_count

21.

class People(object):
??? __name = 'luffy'
??? __age = 18

pl = People()
print(pl.__name, pl.__name)

# 出現報錯，因為私有屬性不允許直接訪問

22.

class Parent(object):
??? x = 1

class Child1(Parent):
??? pass

class Child2(Parent):
??? pass

print(Parent.x, Child1.x, Child2.x)
Child1.x = 2
print(Parent.x, Child1.x, Child2.x)
Parent.x = 3
print(Parent.x, Child1.x, Child2.x)

23.

class Person(object):
??? def __init__(self, name):
??????? self.name = name

??? def buy_car(self, car):
??????? print '%s 寶馬BMW 4s店買%s' % (self.name, car)

joker = Person('joker')
joker.buy_car('BMW X7')

?

class B:
??? def handle(self):
??????? print '喵喵'

class A(B):
??? def handle(self):
??????? B.handle(self)

new = A()
new.handle()

25.

class Student(object):
??? count = 0

??? def __init__(self, name, age):
??????? self.name = name
??????? self.age = age
??????? Student.count += 1

??? @staticmethod
??? def count_student():
??????? print '共實例%d個對象' % Student.count

bob = Student('bob', 19)
Jenny = Student('Jenny', 18)
Danny = Student('Danny', 19)
liming = Student('liming', 20)

Student.count_student()

26.

class Student(object):
??? count = 0

??? def __init__(self, name, age):
??????? self.name = name
??????? self.age = age
??????? Student.count += 1

??? @staticmethod
??? def count_student():
??????? print '共實例%d個對象' % Student.count

bob = Student('bob', 19)
Jenny = Student('Jenny', 18)
Danny = Student('Danny', 19)
liming = Student('liming', 20)

Student.count_student()

?

?