python3 json、logging、sys模块

import json

dic = {‘name‘:‘egon‘,‘age‘:32}
# ------------------------------>序列化
f = open(‘json.txt‘,‘w‘)
data = json.dumps(dic)
print(data)
print(type(data))
f.write(data)
f.close()

# ------------------------------>返序列化
f = open(‘json.txt‘,‘r‘)
data = f.read()
dic1 = json.loads(data)
print(dic1)
print(type(dic1))
f.close()

import logging

logger = logging.getLogger()
fh = logging.FileHandler(‘test.log‘)    # 用于写入日志文件
ch = logging.StreamHandler()            # 用于输入到终端

# 自定义格式
formatter = logging.Formatter(‘%(asctime)s-%(name)s-%(levelname)s-%(message)s‘)

fh.setFormatter(formatter)
sh.setFormatter(formatter)

logger.addHandler(fh)   #logger对象可以添加多个fh和sh对象
logger.addHandler(sh)

logger.debug(‘logger debug message‘)
logger.info(‘logger info message‘)
logger.warning(‘logger warning message‘)
logger.error(‘logger error message‘)
logger.critical(‘logger critical message‘)

import sys

count=1
while count<10:
    print(count)
    if count==8:
        sys.exit()　　# 退出程序
    count+=1

print("ending")

# cmd终端输入python sys模块.py egon 666

print("begin..... ")

ret=sys.argv  #  [sys模块.py‘,"egon",666]
print(ret)    #  [‘sys模块.py‘, ‘-u‘, ‘egon‘, ‘-p‘, ‘666‘]

username=ret[1]
password=ret[2]

if username==‘egon‘ and password=="666":
    print("login")

import sys

print(sys.path)# [“C:\Users\Administrator\PycharmProjects\python5期\day13”，"python环境"]  :执行文件的目录会添加到sys.path

Base_dir=r"C:\Users\Administrator\PycharmProjects\python5期\day12"
sys.path.append(Base_dir)

import lesson1　　# 自定义的模块
lesson1.foo()