模块

['/Users/Yao/python road/even', '/Users/Yao/python road', '/Library/Frameworks/Python.framework/Versions/3.6/lib/python36.zip', '/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6', '/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/lib-dynload', '/Users/Yao/python road/venv/lib/python3.6/site-packages', '/Users/Yao/python road/venv/lib/python3.6/site-packages/setuptools-28.8.0-py3.6.egg', '/Users/Yao/python road/venv/lib/python3.6/site-packages/pip-9.0.1-py3.6.egg', '/Applications/PyCharm.app/Contents/helpers/pycharm_matplotlib_backend']

import json

li = '["even","root"]'
# li = "['even','root']"  这种写法会导致报错
ret = json.loads(li)
print(ret,type(ret))

['even', 'root'] <class 'list'>

{'k1': 'v1'} <class 'dict'>
{"k1": "v1"} <class 'str'>

{'k1': 123} <class 'dict'>

{"data":{"yesterday":{"date":"15日星期五","high":"高温 29℃","fx":"无持续风向","low":"低温 21℃","fl":"<![CDATA[<3级]]>","type":"小雨"},"city":"重庆","aqi":"69","forecast":[{"date":"16日星期六","high":"高温 27℃","fengli":"<![CDATA[<3级]]>","low":"低温 22℃","fengxiang":"无持续风向","type":"小雨"},{"date":"17日星期天","high":"高温 28℃","fengli":"<![CDATA[<3级]]>","low":"低温 23℃","fengxiang":"无持续风向","type":"小雨"},{"date":"18日星期一","high":"高温 28℃","fengli":"<![CDATA[<3级]]>","low":"低温 23℃","fengxiang":"无持续风向","type":"小雨"},{"date":"19日星期二","high":"高温 29℃","fengli":"<![CDATA[<3级]]>","low":"低温 25℃","fengxiang":"无持续风向","type":"阴"},{"date":"20日星期三","high":"高温 28℃","fengli":"<![CDATA[<3级]]>","low":"低温 26℃","fengxiang":"无持续风向","type":"阴"}],"ganmao":"各项气象条件适宜，无明显降温过程，发生感冒机率较低。","wendu":"23"},"status":1000,"desc":"OK"} <class 'dict'>

#--------------------------按图1转换时间
# localtime([secs])
# 将一个时间戳转换为当前时区的struct_time。secs参数未提供，则以当前时间为准。
time.localtime()
time.localtime(1473525444.037215)

# gmtime([secs]) 和localtime()方法类似，gmtime()方法是将一个时间戳转换为UTC时区（0时区）的struct_time。

# mktime(t) : 将一个struct_time转化为时间戳。
print(time.mktime(time.localtime()))#1473525749.0


# strftime(format[, t]) : 把一个代表时间的元组或者struct_time（如由time.localtime()和
# time.gmtime()返回）转化为格式化的时间字符串。如果t未指定，将传入time.localtime()。如果元组中任何一个
# 元素越界，ValueError的错误将会被抛出。
print(time.strftime("%Y-%m-%d %X", time.localtime()))#2016-09-11 00:49:56

# time.strptime(string[, format])
# 把一个格式化时间字符串转化为struct_time。实际上它和strftime()是逆操作。
print(time.strptime('2011-05-05 16:37:06', '%Y-%m-%d %X'))
#time.struct_time(tm_year=2011, tm_mon=5, tm_mday=5, tm_hour=16, tm_min=37, tm_sec=6,
#  tm_wday=3, tm_yday=125, tm_isdst=-1)
#在这个函数中，format默认为："%a %b %d %H:%M:%S %Y"。

#--------------------------按图2转换时间
# asctime([t]) : 把一个表示时间的元组或者struct_time表示为这种形式：'Sun Jun 20 23:21:05 1993'。
# 如果没有参数，将会将time.localtime()作为参数传入。
print(time.asctime())#Sun Sep 11 00:43:43 2016

# ctime([secs]) : 把一个时间戳（按秒计算的浮点数）转化为time.asctime()的形式。如果参数未给或者为
# None的时候，将会默认time.time()为参数。它的作用相当于time.asctime(time.localtime(secs))。
print(time.ctime())  # Sun Sep 11 00:46:38 2016
print(time.ctime(time.time()))  # Sun Sep 11 00:46:38 2016

import datetime

c_time  = datetime.datetime.now()
print(c_time.replace(minute=3,hour=2)) #时间替换
print(c_time.replace(2015,5,3))   #直接替换成年月日

import datetime

c_time  = datetime.datetime.now()
# print(c_time.replace(minute=3,hour=2)) #时间替换
n = c_time.replace(2015,5,3)   #直接替换成年月日
print(c_time,type(c_time))
print(n,type(c_time))

print(c_time > n)

CRITICAL = 50 #FATAL = CRITICAL
ERROR = 40
WARNING = 30 #WARN = WARNING
INFO = 20
DEBUG = 10
NOTSET = 0 #不设置

import logging

logging.basicConfig(filename='log.log',
                    format='%(asctime)s - %(name)s - %(levelname)s -%(module)s:  %(message)s',
                    datefmt='%Y-%m-%d %H:%M:%S %p',
                    level=10)

logging.debug('debug')
logging.info('info')
logging.warning('warning')
logging.error('error')
logging.critical('critical')
logging.log(10, 'log')

'''
critical=50
error =40
warning =30
info = 20
debug =10
'''


import logging

#1、logger对象：负责产生日志，然后交给Filter过滤，然后交给不同的Handler输出
logger=logging.getLogger(__file__)

#2、Filter对象：不常用，略

#3、Handler对象：接收logger传来的日志，然后控制输出
h1=logging.FileHandler('t1.log') #打印到文件
h2=logging.FileHandler('t2.log') #打印到文件
h3=logging.StreamHandler() #打印到终端

#4、Formatter对象：日志格式
formmater1=logging.Formatter('%(asctime)s - %(name)s - %(levelname)s -%(module)s:  %(message)s',
                    datefmt='%Y-%m-%d %H:%M:%S %p',)

formmater2=logging.Formatter('%(asctime)s :  %(message)s',
                    datefmt='%Y-%m-%d %H:%M:%S %p',)

formmater3=logging.Formatter('%(name)s %(message)s',)


#5、为Handler对象绑定格式
h1.setFormatter(formmater1)
h2.setFormatter(formmater2)
h3.setFormatter(formmater3)

#6、将Handler添加给logger并设置日志级别
logger.addHandler(h1)
logger.addHandler(h2)
logger.addHandler(h3)
logger.setLevel(10)

#7、测试
logger.debug('debug')
logger.info('info')
logger.warning('warning')
logger.error('error')
logger.critical('critical')

import sys
import time


def view_bar(num, total):
    rate = num / total
    rate_num = int(rate * 100)
    r = 'r%d%%' % (rate_num, )
    sys.stdout.write(r)
    sys.stdout.flush()


if __name__ == '__main__':
    for i in range(0, 101):
        time.sleep(0.1)
        view_bar(i, 100)

import sys
import time


def view_bar(num, total):
    rate = num / total
    rate_num = int(rate * 100)
    r = 'r%s>%d%%' % ('='*num,rate_num, )
    sys.stdout.write(r)
    sys.stdout.flush()


if __name__ == '__main__':
    for i in range(0, 101):
        time.sleep(0.1)
        view_bar(i, 100)

import hashlib
 
# ######## md5 ########
hash = hashlib.md5()
# help(hash.update)
hash.update(bytes('admin', encoding='utf-8'))
print(hash.hexdigest())
print(hash.digest())
 
 
######## sha1 ########
 
hash = hashlib.sha1()
hash.update(bytes('admin', encoding='utf-8'))
print(hash.hexdigest())
 
# ######## sha256 ########
 
hash = hashlib.sha256()
hash.update(bytes('admin', encoding='utf-8'))
print(hash.hexdigest())
 
 
# ######## sha384 ########
 
hash = hashlib.sha384()
hash.update(bytes('admin', encoding='utf-8'))
print(hash.hexdigest())
 
# ######## sha512 ########
 
hash = hashlib.sha512()
hash.update(bytes('admin', encoding='utf-8'))
print(hash.hexdigest())