在python中导入文件时出现导入错误 [英] Import error while importing a file in python

问题描述

我在同一位置有两个文件，分别是"hello-depend.py"和"second-package.py"

I have two files in the same location namely 'hello-depend.py' and 'second-package.py'

hello-depend.py

 class HelloDepend():

    def depend():

         print "depend"

second-package.py

from hello-depend import HelloDepend

 class SecondPackage():

    def second():

       print "second"

       h = HelloDepend()

       h.depend()


 if \__name__ == '\__main__':

    s = SecondPackage()

    s.second()

我需要从second-package.py为hello-depend.py创建对象.我绑上面的方法.但是我在导入"hello-depend"时收到"语法错误".

I need to create object for hello-depend.py from second-package.py. i tied with above method. But i am getting 'syntax error' while importing 'hello-depend'.

错误:

文件"second-package.py"，第1行

File "second-package.py", line 1

import hello-depend

            ^

SyntaxError:语法无效

SyntaxError: invalid syntax

所以我尝试了以下方法.

So i tried with below method.

import importlib

import importlib

importlib.import_module('hello-depend')

importlib.import_module('hello-depend')

但是我得到的是"全局名称'HelloDepend'未定义'

but i am getting "global name 'HelloDepend' not defined'

请帮助我解决这个问题.

Please help me in solving this.

注意:我需要在不更改文件名的情况下执行此操作.

Note: I need to do this without changing file name.

推荐答案

问题在此处-.Python尝试将其视为减号，并且 hello-dependent 才不是有效的标识符.

Problem is - here. Python tries to treat it as minus symbol and hello-depend is not a valid identifier then.

尝试通过将-替换为下划线( _ )

Try to rename your file by replacing - with underscore (_)

如果您无法更改文件名，无论出于何种原因，都可以

If you just cant change the file names, whatever the reason may be, then you can do

execfile('hello-depend.py')

请注意，这不会导入文件，它将使所有文件的全局变量都进入您自己的作用域，因此不建议他使用它来解决此问题.

Note that this does not import the file, it would get all the file globals into your own scope, and his highly unrecommended to solve this problem.

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