import os.path
print os.path.isdir(r'/data/webroot/resource')
print os.path.isfile(r'/data/webroot/resource/python/test.txt')
把第一个路径的/python删掉了
print os.path.isdir(r'/data/webroot/resource')
print os.path.isfile(r'/data/webroot/resource/python/test.txt')
把第一个路径的/python删掉了
2017-08-02
print isinstance(t,Person),isinstance(t,Student),isinstance(t,Teacher),isinstance(t,object)
横版的就过了True False True True
四个print 换行输出就不过
True
False
True
True
横版的就过了True False True True
四个print 换行输出就不过
True
False
True
True
2017-08-02
>>> import math
>>> def is_sqr(x):
... a=math.sqrt(x)
... return int(a)==a
...
>>> print filter(is_sqr,range(1,101))
[1, 4, 9, 16, 25, 36, 49, 64, 81, 100]
>>> def is_sqr(x):
... a=math.sqrt(x)
... return int(a)==a
...
>>> print filter(is_sqr,range(1,101))
[1, 4, 9, 16, 25, 36, 49, 64, 81, 100]
2017-08-02
print isinstance(t,Person)
print isinstance(t,Student)
print isinstance(t,Teacher)
print isinstance(t,object)
print isinstance(t,Student)
print isinstance(t,Teacher)
print isinstance(t,object)
2017-08-01
class Person(object):
def __init__(self, name, gender):
self.name = name
self.gender = gender
class Teacher(Person):
def __init__(self, name, gender, course):
super(Teacher, self).__init__(name, gender)
self.course = course
def __init__(self, name, gender):
self.name = name
self.gender = gender
class Teacher(Person):
def __init__(self, name, gender, course):
super(Teacher, self).__init__(name, gender)
self.course = course
2017-08-01
def get_grade(self):
if self.__score >= 80:
return 'A'
elif (self.__score >= 60) & (self.__score < 80):
return 'B'
else:
return 'c'
if self.__score >= 80:
return 'A'
elif (self.__score >= 60) & (self.__score < 80):
return 'B'
else:
return 'c'
2017-08-01
for i in range(1, 4):
def f(j):
def g():
return j*j
return g
r = f(i)
fs.append(r)
return fs
,return fs返回一个list,不理解啊,求大神讲解
def f(j):
def g():
return j*j
return g
r = f(i)
fs.append(r)
return fs
,return fs返回一个list,不理解啊,求大神讲解
2017-08-01
str=time.time()
a=time.strftime('%Y-%m-%d',time.localtime(str))
得到时间
a=time.strftime('%Y-%m-%d',time.localtime(str))
得到时间
2017-08-01