sqlalchemy create_engine函数在运行文件名testalchemy.py时不起作用

Question

sqlalchemy create_engine函数在从文件运行时不起作用,但它在python shell中工作正常,因此无法找到问题.所以请任何人指出这个问题.我是用户窗口10和python版本3.5.3.

运行脚本文件时出现以下错误:

C:\python\python.exe C:/Users/Lenovo/Desktop/Auto/pythonseltest/Tests/sqlalchemy.py Traceback (most recent call last):   File "C:/Users/Lenovo/Desktop/Auto/pythonseltest/Tests/sqlalchemy.py", line 2, in <module>
    from sqlalchemy import create_engine   File "C:\Users\Lenovo\Desktop\Auto\pythonseltest\Tests\sqlalchemy.py", line 2, in <module>
    from sqlalchemy import create_engine ImportError: cannot import name 'create_engine'

Process finished with exit code 1

这是实际的代码

from sqlalchemy import create_engine

engine =create_engine('mysql+mysqldb://username:password@localhost:3306/databasename')
connection = engine.connect() result = connection.execute('select *
from cuser')

这个代码工作正常,如果我在python shell中逐行键入此代码,但在尝试运行该文件时,它显示上面的错误.

Answer 1

这是因为您的工作目录中有一个名为sqlalchemy.py的文件.在文档之后,在导入模块时,python在尝试$ PYTHONPATH中的目录之前查找CWD.我猜你有没有create_engine在C:/Users/Lenovo/Desktop/Auto/pythonseltest/Tests/sqlalchemy.py.