问题说明：
客户管理系统开发定制今天在启动python项目时报错如下:
tail: cannot open ‘version’ for reading: No such file or directory
File “/usr/local/python3/lib/python3.8/site-packages/flask/views.py”, line 88, in view
return self.dispatch_request(*args, **kwargs)
File “/usr/local/python3/lib/python3.8/site-packages/flask_restful/init.py”, line 573, in dispatch_request
resp = meth(*args, **kwargs)
File “/home/python/2.0/management/common/base/api.py”, line 18, in method
return f(*args, **kwargs)
File “/usr/local/python3/lib/python3.8/site-packages/flask_httpauth.py”, line 104, in decorated
return f(*args, **kwargs)
File “/home/python/2.0/management/api/system/system_update.py”, line 86, in get
current_version, last_version = get_version()
File “/home/python/2.0/management/api/system/system_update.py”, line 43, in get_version
current_version = current[current.index(‘=’) + 1:]
ValueError: substring not found
跟踪代码错误行：
current_version = current[current.index('=') + 1:]- 1
原因是 该python 的index 方法未匹配搭到数据报错，因为在上面未找到相关的version文件 也匹配不到对应的数据，我的解决办法是补充丢失的version文件,里面编写对应的version版本号
也可以使用find方法代替：
if (filePath.lower().find(‘version’) > 1 or filePath.lower().find(‘version’) > 1 ):