导入SQLAlchemy getting:AttributeError:module“time”时没有属性“clock”

Question

import os
from flask import Flask
from flask_sqlalchemy import SQLAlchemy

basedir=os.path.abspath(os.path.dirname(__file__))
print(basedir)

低于误差

Traceback (most recent call last):
  File "basicdb.py", line 3, in <module>
    from flask_sqlalchemy import SQLAlchemy
  File "D:\Flask-Bootcamp-master\myflaskenv\lib\site-packages\flask_sqlalchemy\__init__.py", line 22, in <module>

    import sqlalchemy
  File "D:\Flask-Bootcamp-master\myflaskenv\lib\site-packages\sqlalchemy\__init__.py", line 9, in <module>
    from .sql import (
  File "D:\Flask-Bootcamp-master\myflaskenv\lib\site-packages\sqlalchemy\sql\__init__.py", line 8, in <module>
    from .expression import (
  File "D:\Flask-Bootcamp-master\myflaskenv\lib\site-packages\sqlalchemy\sql\expression.py", line 34, in <module>
    from .visitors import Visitable
  File "D:\Flask-Bootcamp-master\myflaskenv\lib\site-packages\sqlalchemy\sql\visitors.py", line 28, in <module>
    from .. import util
  File "D:\Flask-Bootcamp-master\myflaskenv\lib\site-packages\sqlalchemy\util\__init__.py", line 8, in <module>
    from .compat import callable, cmp, reduce,  \
  File "D:\Flask-Bootcamp-master\myflaskenv\lib\site-packages\sqlalchemy\util\compat.py", line 172, in <module>
    time_func = time.clock
AttributeError: module 'time' has no attribute 'clock'