18.configparser模块

# 创建配置文件
import configparser
config = configparser.ConfigParser()   # 相当于config = {} 空字典

config["default"] = {"ServerAliveInterval":"",
                               "Compression": "yes",
                              "CompressionLevel": ""}

config['DEFAULT']['ForwardX11'] = 'yes'

config['bitbucket.org'] = {}
config['bitbucket.org']['User'] = 'hg'

config['topsecret.server.com'] = {}
topsecret = config['topsecret.server.com']
topsecret['Host Port'] = ''     # mutates the parser
topsecret['ForwardX11'] = 'no'  # same here

with open("example.ini","w") as f:
    config.write(f)

# 增删改配置文件
import configparser

config = configparser.ConfigParser()

config.read("example.ini")  # 读出来

print(config.sections())   # ['bitbucket.org', 'topsecret.server.com']

print(config["bitbucket.org"]["User"])   # hg

defalut 的信息也会被遍历出来
for key in config["bitbucket.org"]:
    print(key)

# ['user', 'serveraliveinterval', 'compression', 'compressionlevel', 'forwardx11']
print(config.options("bitbucket.org"))
# [('serveraliveinterval', '45'), ('compression', 'yes'), ('compressionlevel', '9'), ('forwardx11', 'yes'), ('user', 'hg')]
print(config.items("bitbucket.org"))
# yes
print(config.get("bitbucket.org", "compression"))

# config.add_section("yun")   # 生成新的块
# config.set("yun", "name", "alex")   # 给新的块设置值

# config.remove_section("topsecret.server.com")  # 删除块
# config.remove_option("bitbucket.org", "user")  # 删除键值

# config.write(open("i.cfg", "w"))  # 重新生成配置文件

os模块：

 # os模块________________________
 print(os.getcwd())  # 当前工作目录
 os.chdir("tmp")  # 改变当前工作目录
 print(os.getcwd())

 # os.makedirs("dirname1/dirname2")  # 建多个
 # os.removedirs("dirname1/dirname2")  # 删除空目录（如果不为空不删除）
 # print(os.mkdir("t4.py"))  #创建单个文件夹
 # print(os.rmdir("t4.py"))  # 删除单个目录，目录必须为空
 # print(os.remove("__init__.py"))  # 删除一个文件
 # print(os.rename("test.py", "test2.py")) # 修改文件名 ("oldname","newname")

 print(os.listdir())  # 工作目录下载所有文件

 print(os.stat("test.py"))  # 文件创建以及其他一系列的信息
 print(os.sep)   # 当前操作系统的路径分隔符\
 print(os.linesep)  # window \t\n linux\n
 print(os.pathsep)  # ; 分割文件路径  linux用：（冒号）
 # print(os.system("dir"))   # 执行命令

 print(os.path.split("test/file.py"))  # 路径分割
 print(os.path.dirname("test/file.py"))    # 拿到上级目录
 print(os.path.basename("test/file.py"))    # 拿到文件名

 # 下面是用来是判断绝对路径
 print(os.path.exists(r"Users\lzh\PycharmProjects\day05"))
 print(os.path.exists(r"C:\Users\lzh\PycharmProjects\day05\t1.py"))
 print(os.path.isabs(r"C:\Users\lzh\PycharmProjects\day05\t1.py"))  # 是否是绝对路径
 print(os.path.isfile(r"C:\Users\lzh\PycharmProjects\day05\t1.py"))
 print(os.path.isdir(r"C:\Users\lzh\PycharmProjects\day05"))
 print(os.path.getatime(r"C:\Users\lzh\PycharmProjects\day05"))  # 最后的存取时间
 t1 = os.path.getatime(r"C:\Users\lzh\PycharmProjects\day05")
 print(os.path.getmtime(r"C:\Users\lzh\PycharmProjects\day05"))  # 最后修改时间
 print(os.environ)

random模块：

 # random模块______________________

 import random
 print("_____________________")
 ret = random.random()  # 0.7300862907438088
 print(ret)
 print(random.randint(1, 3))  # [1, 3]  之间的随机整数
 print(random.randrange(1, 3))   # [1,3)
 print(random.choice([1, 3, 4]))  # 随机选取
 print(random.sample([1, 2, 3, 4], 2))  # [2, 1]
 print(random.uniform(1, 4))  # （1， 4）之间的浮点数
 print(random.shuffle([1, 2, 3, 4, 5]))   # 打乱可迭代对象中的顺序

 # 验证码
 def v_code():
     ret = ""
     for i in range(5):
         num = random.randint(0, 9)
         alf = random.randint(65, 122)
         s = str(random.choice([num, chr(alf)]))  # 相同的概率拿到
         ret += s
     return ret
 print(v_code())

# json模块（数据交换）
dict = '{"name":"alex"}'
f = open("hello", "w")
f.write(dict)

# f_read = open("hello", 'r')
# data = f_read.read()
# print(type(data))
# data = eval(data)
# print(data["name"])

import json
f = open("hello", "w")
dict = {"name": "alex"}
print(json.dumps(dict))
dict = json.dumps(dict)  # 等价于json.dump(dict, f)
f.write(dict)

f_read = open("hello", 'r')
json.loads(f_read.read())  # 等价于json.load(f_read)
# 文件操作

# pickle模块
import pickle
j = pickle.dumps(dict)
print(type(j))   # 字节

f = open("序列化对象——pickle", 'wb')
f.write(j)   # 等价于pickle.dump(dic, f# )
f.close()

f_read = open("序列化对象——pickle", 'rb')
data = pickle.loads(f_read.read())  # 等价于 pickle.load(f)

# shelve模块
import shelve

f = shelve.open(r"shelve")

# f["info"] = {"name": "alex3"}
# f["info2"] = {"name": "alex2", "age", : }
# f["info"] = {"name": "alex1", "age", : , "gender": "男"}

# f.close()

print(f.get("info")["name"])

json相关模块

import sys
import time

a = 1
if a == 1:
    print("a==1")

print(sys.platform)
print(sys.argv)
# command = sys.argv[1]
# path = sys.argv[2]

# if command == "post":
#     pass
# elif command == "get":
#     pass

# for i in range(100):
#     sys.stdout.write("#")
#     time.sleep(0.1)
#     sys.stdout.flush()
print(sys.path)
print(sys.version)
# print(sys.exit(1))

sys