常用模块3

目录

• 一 logging模块
• 二 re模块

一 logging模块

import logging

logging.basicConfig(
    # 1、日志输出位置：1、终端 2、文件
    filename='access.log', # 不指定，默认打印到终端

    # 2、日志格式
    format='%(asctime)s - %(name)s - %(levelname)s -%(module)s:  %(message)s',

    # 3、时间格式
    datefmt='%Y-%m-%d %H:%M:%S %p',

    # 4、日志级别
    # critical => 50
    # error => 40
    # warning => 30
    # info => 20
    # debug => 10
    level=10,
)

logging.debug('调试debug') # 10
logging.info('消息info')   # 20
logging.warning('警告warn')# 30
logging.error('egon提现失败') # 40
logging.critical('严重critical') # 50

二 re模块

import re

print(re.findall('\w','aAbc123_*()-='))
print(re.findall('\W','aAbc123_*()-= '))
print(re.findall('\s','aA\rbc\t\n12\f3_*()-= '))
print(re.findall('\S','aA\rbc\t\n12\f3_*()-= '))
print(re.findall('\d','aA\rbc\t\n12\f3_*()-= '))
print(re.findall('\D','aA\rbc\t\n12\f3_*()-= '))
print(re.findall('\D','aA\rbc\t\n12\f3_*()-= '))
print(re.findall('\Aalex',' alexis alex sb'))
                         alex
print(re.findall('sb\Z',' alexis alexsb sb'))
                                      sb\Z
print(re.findall('sb\Z',"""alex
alexis
alex
sb
"""))

print(re.findall('^alex','alexis alex sb'))
print(re.findall('sb$','alexis alex sb'))
print(re.findall('sb$',"""alex
alexis
alex
sb
"""))

print(re.findall('^alex$','alexis alex sb'))
print(re.findall('^alex$','al       ex'))
print(re.findall('^alex$','alex'))

重复匹配：| . | * | ? | .* | .*? | + | {n,m} |
1、.:匹配除了\n之外任意一个字符，指定re.DOTALL之后才能匹配换行符
print(re.findall('a.b','a1b a2b a b abbbb a\nb a\tb a*b'))
                                                  a.b
['a1b','a2b','a b','abb','a\tb','a*b']
print(re.findall('a.b','a1b a2b a b abbbb a\nb a\tb a*b',re.DOTALL))

2、*：左侧字符重复0次或无穷次，性格贪婪
print(re.findall('ab*','a ab abb abbbbbbbb bbbbbbbb'))
                                               ab*
['a','ab','abb','abbbbbbbb']

3、+：左侧字符重复1次或无穷次，性格贪婪
print(re.findall('ab+','a ab abb abbbbbbbb bbbbbbbb'))
                        ab+

4、？：左侧字符重复0次或1次，性格贪婪
print(re.findall('ab?','a ab abb abbbbbbbb bbbbbbbb'))
                                               ab?
['a','ab','ab','ab']

5、{n,m}：左侧字符重复n次到m次，性格贪婪
{0,} => *
{1,} => +
{0,1} => ?
{n}单独一个n代表只出现n次，多一次不行少一次也不行

print(re.findall('ab{2,5}','a ab abb abbb abbbb abbbbbbbb bbbbbbbb'))
                                                          ab{2,5}
['abb','abbb','abbbb','abbbbb]

print(re.findall('\d+\.?\d*',"asdfasdf123as1111111.123dfa12adsf1asdf3"))
                                                                  \d+\.?\d*                                      \d+\.?\d+


[]匹配指定字符一个
print(re.findall('a\db','a1111111b a3b a4b a9b aXb a b a\nb',re.DOTALL))
print(re.findall('a[501234]b','a1111111b a3b a4b a9b aXb a b a\nb',re.DOTALL))
print(re.findall('a[0-5]b','a1111111b a3b a1b a0b a4b a9b aXb a b a\nb',re.DOTALL))
print(re.findall('a[0-9a-zA-Z]b','a1111111b axb a3b a1b a0b a4b a9b aXb a b a\nb',re.DOTALL))

print(re.findall('a[^0-9a-zA-Z]b','a1111111b axb a3b a1b a0b a4b a9b aXb a b a\nb',re.DOTALL))
print(re.findall('a-b','a-b aXb a b a\nb',re.DOTALL))
print(re.findall('a[-0-9\n]b','a-b a0b a1b a8b aXb a b a\nb',re.DOTALL))