一、time与datetime模块

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import time

# 一:时间有三种格式(*****)
# 1、时间戳:秒数=>用于时间计算
# start=time.time()
# print(start,type(start))

# 2、格式化的字符串=>用于显示给人看
# res=time.strftime("%Y-%m-%d %H:%S:%M %p")
# res=time.strftime("%Y-%m-%d %X")
# print(res,type(res))

# 3、结构化的时间=>获取时间的某一部分
# res = time.localtime()
# res1 = time.gmtime()

# print(res,type(res))
# print(res.tm_year)

# print(res)
# print(res1)

# 二:时间转换
# 2.1 时间戳---》格式化的字符串
# struct_time=time.localtime(3333.3)
# res=time.strftime("%Y:%m",struct_time)
# print(res)

# 2.2 格式化的字符串---》时间戳
# struct_time=time.strptime("2017-07-03 11:11:11","%Y-%m-%d %H:%M:%S")
# res=time.mktime(struct_time)
# print(res)

# 三:
# print(time.ctime(3333.3))
# print(time.asctime(time.localtime(3333.3)))

# 四:
# time.sleep(3)


#==========================> datetime模块
import datetime

# res=datetime.datetime.now()
# print(res)

# print(datetime.date.fromtimestamp(time.time()))
# print(datetime.datetime.fromtimestamp(time.time()))

# res=datetime.datetime.now() + datetime.timedelta(days=3)
# res=datetime.datetime.now() + datetime.timedelta(days=-3)
# print(res)

# res=datetime.datetime.now()
# print(res)
# new_res=res.replace(year=1999,month=9)
# print(new_res)

 

二、random模块

 

import random

# print(random.random())
# print(random.randint(1,3))

# print(random.choice([1,'23',[4,5]]))
# print(random.sample([1,'23',[4,5]],2))

# print(random.uniform(1,3))

# item=[1,3,5,7,9]
# random.shuffle(item)
# print(item)


# 随机验证码
# print(chr(65))
# print(chr(90))

def make_code(n=5):
    res = ''
    for i in range(n):
        s1 = str(random.randint(0, 9))
        s2 = chr(random.randint(65, 90))
        res += random.choice([s1, s2])
    return res

print(make_code(4))

 

 

 

三、os模块

# import os
# print(os.listdir("."))

# import os

# cmd=input(r"""
# Microsoft Windows [版本 10.0.17763.1339]
# (c) 2018 Microsoft Corporation。保留所有权利。
#
# %s=====> """ %os.getcwd())
# res=os.system(cmd)
# print('='*100)
# print(res)


import os
# print(__file__)
# print(os.path.abspath(__file__))

# res=os.path.split("D:/python全栈15期/day21/03 os模块.py")
# print(res)

# print(os.path.basename("D:/python全栈15期/day21/03 os模块.py"))
# print(os.path.dirname("D:/python全栈15期/day21/03 os模块.py"))

# print(os.path.exists("D:/python全栈15期/day21/"))
# print(os.path.isabs("D:/python全栈15期/day21/"))
# print(os.path.isabs("/python全栈15期/day21/"))

# print(os.path.isabs("python全栈15期/day21/"))

# print(os.path.join("a",'b','D:\c','d.txt'))


# print(os.path.dirname(os.path.dirname(__file__)))

# res=os.path.join(
#     __file__,
#     "..",
#     ".."
# )
#
# print(os.path.normpath(res))


print(os.path.getsize(__file__))

 

四、sys模块

import sys

# sys.path
# print(sys.argv)

# src_file = input("源文件路径:").strip()
# dst_file = input("目标文件路径:").strip()
# src_file = sys.argv[1]
# dst_file = sys.argv[2]
#
# with open(r"%s" %src_file,mode='rb') as f1,open(r"%s" %dst_file,mode='wb') as f2:
#     for line in f1:
#         f2.write(line)

打印进度条

# import time
# print("[#               ]",end='')
# time.sleep(0.3)
# print("\r[##              ]",end='')
# time.sleep(0.3)
# print("\r[###             ]",end='')
# time.sleep(0.3)
# print("\r[####            ]",end='')


# print("[%-15s]" % "###",)
# print("[%-15s]" % "####",)


import time

def progress(percent):
    if percent > 1:
        percent=1
    print("\r[%-50s] %d%%" % ("#"*int(50*percent),int(100 * percent)),end='')

total_size = 1025
recv_size = 0

while recv_size < total_size:
    # 每次下载1024
    time.sleep(0.3)
    recv_size+=1024

    percent = recv_size / total_size

    progress(percent)

 

五、configparser模块

import subprocess

# pwd ; sasdfasdf ;echo 123

obj = subprocess.Popen("diasfdafr", shell=True,
                       stdout=subprocess.PIPE,
                       stderr=subprocess.PIPE
                       )

res1=obj.stdout.read()
res2=obj.stderr.read()
# print(res1.decode('gbk'))
print(res2.decode('gbk'))

 

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