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basic_test.py
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# -*-coding:utf-8-*-
import re
from _datetime import datetime, timedelta
import json
# 取出de
# a = 'abcdefg'
# print(a.index('a'))
# print(a.index('b'))
# start_index = a.index('bc')
# end_index = a.index('fg')
#
# print(a[start_index + len('bc'):end_index])
# 正则表达式
# # match() 匹配成功返回match对象,否则返回None
# s = re.match(r'\d{3,5}-\d{5,8}', '010-666666')
#
# print(s)
# if (s == None):
# print('匹配失败')
# else:
# print('匹配成功')
#
#
# s='<a class="mm-first" href="//mm.taobao.com/self/album_photo.htm?user_id=176817195&album_id=10000878652&album_flag=0" target="_blank"> <img src="//img.alicdn.com/imgextra/i1/176817195/TB1bmwwKpXXXXXaXpXXXXXXXXXX_!!0-tstar.jpg_240x240xz.jpg" width="125" height="125"> </a> <!--<a class="mm-first" href="//mm.taobao.com/self/album_photo.htm?user_id=176817195&album_id=10000878652&album_flag=0" target="_blank"> <img src="//img.alicdn.com/imgextra/i4/176817195/TB15bsVKFXXXXbuaXXXXXXXXXXX_!!0-tstar.jpg_250x250.j'
# # pattern='href="//mm.taobao.com/self/album_photo.htm?user_id=176817195&album_id=(.*?)&album_flag=0'
# # pattern2=re.compile('href="//mm\.taobao\.com/self/album_photo\.htm\?user_id=176817195&album_id=(.*?)&album_flag=0')
# pattern2=re.compile('href="//mm\.taobao\.com/self/album_photo\.htm\?user_id=176817195&album_id=(.*?)&album_flag=0')
# urls=re.findall(pattern2,s)
# for i in urls:
# print(i)
# 查找所有符合条件的数据
# s2=re.findall(r'\d{3,5}', '010-abc345-d678jdeg57654jd87kal8e77a8e')
# print(s2)
# finditer用法，暂时不掌握
# s3=re.finditer(r'\d{3,5}', '010-abc345-d678jdeg57654jd87kal8e77a8e')
# print(s3)
# print(datetime.now())
#
# dt=datetime(2018,12,1,12,34,23)
#
# print(dt)
# print(type(dt))
#
# timestamp=dt.timestamp()
# print(timestamp)
#
# time=datetime.fromtimestamp(timestamp) # 本地时间
# print(time)
#
# utctime=datetime.utcfromtimestamp(timestamp) # 格林威治时间
# print(utctime)
# # str转成时间
# cday=datetime.strptime('2017-5-6 12:23:34','%Y-%m-%d %H:%M:%S') # 后面的参数必须跟时间格式一致，参数必须要
# print(cday)
#
# print(time.strftime('%Y-%m-%d %H-%M-%S'))
# 时间加减
# time_add=time+timedelta(days=3)
# print(time_add)
#
#
#
#
# #对象序列号
# dic={'no':'12458','name':'孙涛'}
# dic_json=json.dumps(dic)
# print(dic_json)
#
# dic2=json.loads(dic_json)
# print(dic2)
# 异常处理+while循环
def test():
i = 0
while i < 5: # 只循环5次
s = input('请输入被除数！')
try:
rst = 10 / int(s)
except ZeroDivisionError:
print('不能输入0')
except ValueError:
print('值无效')
else:
print(rst)
i += 15
# test()
g = lambda x:x+1
print(g(2))
def is_odd(a):
return a % 2 != 0
foo = [2, 18, 9, 22, 17, 24, 8, 12, 27]
# lambda 表达式 输入参数x,返回满足条件的 x % 2 == 0
s = filter(lambda x: x % 2 == 0, foo)
print(list(s))
print(list(filter(is_odd, foo)))
print(chr(66))
a = [1,2,3,4,5,6,7,8,9,0]
print(all(a))
print(any(a))
print(a[slice(3)])
a = [-9,1,-5,3,2,7,12]
b=sorted(a,key=abs,reverse=True)# 使用绝对值排序，降序
print(b)
exec('print("hello world")')
exec('print(pow(2,3))')
print(eval('3**2'))
print('a', 'b','c','d',sep='--',end='') # 加了这个下面的print就不换行了
print(2, 1, 3)
print(ord('中'))
print(list(range(10)))