[PYTHON] Import by directly specifying the directory path

Note that the test did not pass with Import Error in the existing project

When the project structure is as follows

• Submodule is assumed to be a module added by "git submodule"

root/
　├ module/
　│　└ submodule/
　│　　└ to_import_module
　└ tests/
　　└ test1.py

Trying to import to_import_module in test1.py

import module.submoule.to_import_module

 Even as

#### **` No module named to_import_module`**
```importerror

 Will be pushed back. However, for this reason, I specified a path
 It's also a hassle to change project settings and so on.
 So here I use sys and os modules

import os import sys sys.path.append(os.path.dirname(os.path.abspath(file)) + '/../module/submodule') import to_import_module

 Import becomes possible by expanding the exploration path range.
 It is good to specify a relative path so that it works in other environments.

 However, this method makes me angry with "pep8 E402",
 ** Test execution is heavier than code rules **
 So please forgive me.
 Of course, it is NG to use for the favorite code