python从入门到放弃学习笔记

pip install pyparsing
from django.conf.urls import url

from django.urls import re_path as url

pip install -i https://pypi.tuna.tsinghua.edu.cn/simple --trusted-host pypi.tuna.tsinghua.edu.cn fastapi

镜像网址https://pypi.tuna.tsinghua.edu.cn/simple
清华：https://pypi.tuna.tsinghua.edu.cn/simple
阿里云：http://mirrors.aliyun.com/pypi/simple/
中国科技大学 https://pypi.mirrors.ustc.edu.cn/simple/
华中理工大学：http://pypi.hustunique.com/
山东理工大学：http://pypi.sdutlinux.org/ 
豆瓣：http://pypi.douban.com/simple/
https://www.python.org/
http://bbs.fishc.com/thread-35584-1-1.html

https://www.python.org/downloads/release/python-3104/

yum install wget zlib-devel bzip2-devel openssl-devel nosurses-devel sqlite-devel readline-devel tk-devel gcc make zlib zlib-devel
libffi-devel -y
wget https://www.python.org/ftp/python/3.10.4/Python-3.10.4.tgz
tar -zxvf 
cd Python-3.10.4
./configure --prefix=/usr/local/python3.10.4
make && make install
cd /usr/local/python3.10.4
cd bin
/usr/bin/python
ln -s /usr/local/python3.10.4/bin/python3.10  /usr/bin/python
exit()
yum更新
root@python bin# vi /usr/libexec/urlgrabber-ext-down

pip install virtualenv
virtualenv venv

pip install -i https://pypi.tuna.tsinghua.edu.cn/simple --trusted-host pypi.tuna.tsinghua.edu.cn  -r .\requirements.txt

-- coding: utf-8 --
@Time    : 2023/3/7 21:26
@Author  : zhaokk
@Email   : 1462018576@qq.com
@File    : pydantic_tutorial.py
@Software: PyCharm
from pathlib import Path
from pydantic import BaseModel,ValidationError
from datetime import datetime
from typing import List, Optional
class User(BaseModel):
id: int
name: str = "kk"
signup_ts: Optional[datetime] = None
friends: List[int] = []
external_data = {
"id": 1,
"signup_ts": "2023-03-07 21:43",
"friends": [1, 2, "3"]
}
user = User(**external_data)
print(user.id, user.friends)
print(repr(user.signup_ts))
print(user.dict())
print(user.copy())
print(User.parse_obj(obj=external_data))
print(User.parse_raw('{"id": 1, "name": "kk", "signup_ts": "2023-03-07 21:43", "friends": 1, 2, 3}'))
try:
User(id=1,signup_ts=datetime.now(),friends=1,21,"not a numver")
except ValidationError as e:
print(e.json())
path = Path('test.json')
path.write_text('{"id": 1, "name": "kk", "signup_ts": "2023-03-07 21:43", "friends": 1, 2, 3}')
print(User.parse_file(path))
print(user.schema())
print(user.schema_json())
user_data = {
"id": "error",
"signup_ts": "2023-03-07 21:43",
"friends": [1, 2, "3"]
}
不校验数据只创建模型类
print(user.construct(**user_data))
print(User.fields.keys())
class Sound(BaseModel):
sound: str
class Dog(BaseModel):
birthday: date
weight: float = Optional[None]
sound: List[Sound]
#不同的狗有不同的叫声。递归模型(Recursive Models),就是指一个
dogs = Dog(birthday=date.today(), weight=6.66,sound={"sound":"wang wang"},{"sound":"ying ying"})
print(dogs.dict())