python进阶_技术问答

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python进阶

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qq_知秋一叶_1

def __str__(self):
n = self.gcd(self.p,self.q)
return '%s/%s' % (self.p/n,self.q/n)

def gcd(self,n1,n2):
if n1%n2 == 0:
return n2
return self.gcd(n2,n1%n2)

0 6-5 python中数学运算

2018-02-27

qq_知秋一叶_1

def __str__(self):
return str(self.fab(self.num))

def __len__(self):
return len(self.fab(self.num))

0 6-4 python中 __len__

2018-02-27

qq_知秋一叶_1

def __init__(self, num):
self.num = num

def fab(self,count):
L = []
n,a,b = 0,0,1
while n < count-1:
if n== 0:
L.append(a)
L.append(b)
a,b = b,a+b
n += 1
return L

0 6-4 python中 __len__

2018-02-27

风雪久

def cmp_ignore_case(s1, s2):
return 1 if s1.lower() > s2.lower() else -1 if s1.lower() < s2.lower() else 0

print sorted(['bob', 'about', 'Zoo', 'Credit'], cmp_ignore_case)

0 2-7 python中自定义排序函数

2018-02-27

劳胜锋

感觉到python好强大

1 5-5 python中多重继承

2018-02-27

qq_知秋一叶_1

def __str__(self):
return '(Student: %s, %s, %s)' % (self.name,self.gender,self.score)

0 6-2 python中 __str__和__repr__

2018-02-27

qq_知秋一叶_1

def __init__(self, name, gender, **kw):
self.name = name
self.gender = gender
for k,v in kw.items():
setattr(self,k,v)

2 5-6 python中获取对象信息

2018-02-27

qq_知秋一叶_1

def __init__(self, name, gender, **kw):
self.name = name
self.gender = gender
for k,v in kw.iteritems():
setattr(Person,k,v)

1 5-6 python中获取对象信息

2018-02-27

qq_知秋一叶_1

def __init__(self, name, gender, **kw):
self.name = name
self.gender = gender
if 'age' in kw:
self.age = kw['age']
if 'course' in kw:
self.course = kw['course']

0 5-6 python中获取对象信息

2018-02-27

qq_知秋一叶_1

class BStudent(Student,BasketballMixin):
pass

class FTeacher(Teacher,FootballMixin):
pass

0 5-5 python中多重继承

2018-02-27

qq_知秋一叶_1

class BStudent(BasketballMixin):
pass

class FTeacher(FootballMixin):
pass

0 5-5 python中多重继承

2018-02-27

qq_知秋一叶_1

import json

class Students(object):
def read(self):
return r'["Tim", "Bob", "Alice"]'

s = Students()

print json.load(s)

0 5-4 python中多态

2018-02-27

qq_知秋一叶_1

class Teacher(Person):

def __init__(self, name, gender, course):
super(Teacher,self).__init__(name,gender)
self.course = course

0 5-2 python中继承一个类

2018-02-27

qq_知秋一叶_1

class Person(object):

__count = 0

@classmethod
def how_many(s):
return s.__count
def __init__(self,name):
self.name = name
Person.__count += 1

print Person.how_many()

p1 = Person('Bob')

print Person.how_many()

0 4-10 python中定义类方法

2018-02-27

qq_知秋一叶_1

def __init__(self, name, score):
self.name = name
self.__score = score

def get_grade(self):
if self.__score > 80:
print self.name,'-','优秀'
elif self.__score > 60:
print self.name,'-','及格'
else:
print self.name,'-','不及格'

0 4-8 python中定义实例方法

2018-02-27

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老师告诉你能学到什么？: 1、什么是函数式编程 2、Python的函数式编程特点 3、Python的模块 4、Python面向对象编程 5、Python强大的定制类

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