import time

# 时间戳，以秒做单位
print(time.time())

# localtime 结构化时间
print(time.localtime())

# UTC时间
print(time.gmtime())

# 格式化时间
print(time.strftime('%Y-%m-%d %H:%M:%S', time.localtime()))

# 时间戳--->结构化
print(time.localtime(time.time()))

# 结构化--->时间戳
print(time.mktime(time.localtime()))

time.sleep(5)
print('weekup')

# 单独获取某个年月日
d1 = datetime.datetime.now()
print(d1)
print(d1.year)
print(d1.hour)

# 设定时间点
d2 = datetime.datetime(2008, 11, 15, 12, 33, 47)
print(d2)

# 计算两个时间的差
print(d1 - d2)

# 替换指定时间
print(d1.replace(year=2017))

# 表示时间差
print(datetime.timedelta(days=5))

# 时间差与datetime.datetime相加
print(d1 + datetime.timedelta(days=5))
print(d1 + datetime.timedelta(weeks=3))

import random

# 随机生成    0 <= m < 1的数
print(random.random())

# 随机生成整数  包含头、尾
print(random.randint(1, 5))

# 随机选择一个
print(random.choice([1, 2, 3, 4]))

# 随机取3个
print(random.sample([1, 2, 'aa', [1, 2, 3]], 3))

# 随机产生一个大于1小于3的小数
print(random.uniform(1, 2))

# 打乱列表顺序
l = [1, 2, 's', 'ww', [1, 2], (1, 2, 3)]
random.shuffle(l)
print(l)

def random_word(n):
    for i in range(n):
        res = str(random.randint(0, 9))
        res2 = chr(random.randint(67, 90))
        choice = random.choice([res, res2])
        print(choice, end='')
random_word(9)

import sys

# 第一个元素是程序本身路径
print(sys.argv)

# 返回模块的搜索路径
print(sys.path)

# 退出程序
sys.exit(0)

def progress(percent, width):
    percent = percent if percent <= 1 else 1
    text = '[%%-%ds]' % (width)  # text = '[%-20s]'
    text = text % ('*' * int(percent * width))
    text = text + '%s%%'
    text = text % (percent * 100)
    print('\r%s' % text, end='')

import time
import random

cur_filsize = 0
while True:
    time.sleep(0.5)
    file_size = 10240
    cur_filsize += random.random()*100
    progress(cur_filsize / file_size, 50)
    if cur_filsize >= file_size:
        print()
        print("finish")
        break

import sys
import time

def progress(percent,width=50):
    if percent >= 1:
        percent=1
    show_str=('[%%-%ds]' %width) %(int(width*percent)*'#')
    print('\r%s %d%%' %(show_str,int(100*percent)),file=sys.stdout,flush=True,end='')

data_size=1025
recv_size=0
while recv_size < data_size:
    time.sleep(0.1) #模拟数据的传输延迟
    recv_size+=1024 #每次收1024
    percent=recv_size/data_size #接收的比例
    progress(percent,width=70) #进度条的宽度70

import zipfile,tarfile

# 解压zip
z = zipfile.ZipFile(r"D:\脱产三期视频\Day17\test.zip")
z.extractall()
z.close()

# 解压tar
t = tarfile.open(r"D:\脱产三期视频\Day17\test.tar")
t.extractall()
t.close()

import pickle
 
dic={'name':'alvin','age':23,'sex':'male'}
 
print(type(dic))#<class 'dict'>
 
j=pickle.dumps(dic)
print(type(j))#<class 'bytes'>
 
 
f=open('序列化对象_pickle','wb')#注意是w是写入str,wb是写入bytes,j是'bytes'
f.write(j)  #-------------------等价于pickle.dump(dic,f)
 
f.close()
#-------------------------反序列化
import pickle
f=open('序列化对象_pickle','rb')
 
data=pickle.loads(f.read())#  等价于data=pickle.load(f)
 
 
print(data['age'])