关于SQL alchemy的使用

Question

写完代码与逆行之后发现的问题;
为啥会一直提示找不到指定程序

> D:\Anaconda3\python.exe D:/pythonProject/python_space/mydjango/cmdb/admin.py
Traceback (most recent call last):
  File "D:/pythonProject/python_space/mydjango/cmdb/admin.py", line 51, in <module>
    Base.metadata.create_all(engine)
  File "D:\Anaconda3\lib\site-packages\sqlalchemy\sql\schema.py", line 4005, in create_all
    tables=tables)
  File "D:\Anaconda3\lib\site-packages\sqlalchemy\engine\base.py", line 1939, in _run_visitor
    with self._optional_conn_ctx_manager(connection) as conn:
  File "D:\Anaconda3\lib\contextlib.py", line 112, in __enter__
    return next(self.gen)
  File "D:\Anaconda3\lib\site-packages\sqlalchemy\engine\base.py", line 1932, in _optional_conn_ctx_manager
    with self.contextual_connect() as conn:
  File "D:\Anaconda3\lib\site-packages\sqlalchemy\engine\base.py", line 2123, in contextual_connect
    self._wrap_pool_connect(self.pool.connect, None),
  File "D:\Anaconda3\lib\site-packages\sqlalchemy\engine\base.py", line 2158, in _wrap_pool_connect
    return fn()
  File "D:\Anaconda3\lib\site-packages\sqlalchemy\pool.py", line 403, in connect
    return _ConnectionFairy._checkout(self)
  File "D:\Anaconda3\lib\site-packages\sqlalchemy\pool.py", line 791, in _checkout
    fairy = _ConnectionRecord.checkout(pool)
  File "D:\Anaconda3\lib\site-packages\sqlalchemy\pool.py", line 532, in checkout
    rec = pool._do_get()
  File "D:\Anaconda3\lib\site-packages\sqlalchemy\pool.py", line 1196, in _do_get
    self._dec_overflow()
  File "D:\Anaconda3\lib\site-packages\sqlalchemy\util\langhelpers.py", line 66, in __exit__
    compat.reraise(exc_type, exc_value, exc_tb)
  File "D:\Anaconda3\lib\site-packages\sqlalchemy\util\compat.py", line 249, in reraise
    raise value
  File "D:\Anaconda3\lib\site-packages\sqlalchemy\pool.py", line 1193, in _do_get
    return self._create_connection()
  File "D:\Anaconda3\lib\site-packages\sqlalchemy\pool.py", line 350, in _create_connection
    return _ConnectionRecord(self)
  File "D:\Anaconda3\lib\site-packages\sqlalchemy\pool.py", line 477, in __init__
    self.__connect(first_connect_check=True)
  File "D:\Anaconda3\lib\site-packages\sqlalchemy\pool.py", line 674, in __connect
    connection = pool._invoke_creator(self)
  File "D:\Anaconda3\lib\site-packages\sqlalchemy\engine\strategies.py", line 106, in connect
    return dialect.connect(*cargs, **cparams)
  File "D:\Anaconda3\lib\site-packages\sqlalchemy\engine\default.py", line 412, in connect
    return self.dbapi.connect(*cargs, **cparams)
  File "D:\Anaconda3\lib\site-packages\pymysql\connections.py", line 353, in __init__
    self.connect()
  File "D:\Anaconda3\lib\site-packages\pymysql\connections.py", line 633, in connect
    self._request_authentication()
  File "D:\Anaconda3\lib\site-packages\pymysql\connections.py", line 932, in _request_authentication
    auth_packet = _auth.caching_sha2_password_auth(self, auth_packet)
  File "D:\Anaconda3\lib\site-packages\pymysql\_auth.py", line 265, in caching_sha2_password_auth
    data = sha2_rsa_encrypt(conn.password, conn.salt, conn.server_public_key)
  File "D:\Anaconda3\lib\site-packages\pymysql\_auth.py", line 147, in sha2_rsa_encrypt
    rsa_key = serialization.load_pem_public_key(public_key, default_backend())
  File "D:\Anaconda3\lib\site-packages\cryptography\hazmat\backends\__init__.py", line 15, in default_backend
    from cryptography.hazmat.backends.openssl.backend import backend
  File "D:\Anaconda3\lib\site-packages\cryptography\hazmat\backends\openssl\__init__.py", line 7, in <module>
    from cryptography.hazmat.backends.openssl.backend import backend
  File "D:\Anaconda3\lib\site-packages\cryptography\hazmat\backends\openssl\backend.py", line 117, in <module>
    from cryptography.hazmat.bindings.openssl import binding
  File "D:\Anaconda3\lib\site-packages\cryptography\hazmat\bindings\openssl\binding.py", line 14, in <module>
    from cryptography.hazmat.bindings._openssl import ffi, lib
ImportError: DLL load failed: 找不到指定的程序。

Process finished with exit code 1
> 
不知道为啥找了很久也没办法解决，之前也用过还好好的。
求助各位大神，谢谢啦
```python
# 调用Column创建字段 加类型
from sqlalchemy import Table, Column, Integer, String, ForeignKey

# 调用操作链接,反查
from sqlalchemy.orm import relationship

# 调用基类Base
from sqlalchemy.ext.declarative import declarative_base

# 调用链接数据库
from sqlalchemy import create_engine

# 创建一个连接
engine = create_engine("mysql+pymysql://wu:123456@localhost:3306/wu", encoding="utf-8")

# 创建一个orm基类
Base = declarative_base()


# 创建表结构

class UserTable(Base):
    __tablename__ = 'user'
    username = Column(String(32), primary_key=True)
    password = Column(String(32))
    identify = Column(String(5))

    def __repr__(self):
        return "User(name=%s,fullname=%s,password=%s" % (self.username, self.password, self.identify)


class InfoManage(Base):
    __tablename__ = 'info'
    id = Column(Integer, primary_key=True)
    hostname = Column(String(32))
    port = Column(String(16))
    address = Column(String(16))
    status = Column(String)
    tran_speed = Column(String)
    DNS = Column(String)
    key = Column(Integer)

    def __repr__(self):
        return "id:%s" % self.id


# 创建表
Base.metadata.create_all(engine)

上面是我的代码