How to quickly upload files to Google Lab

It is divided into the following steps ：

Step#1 Connect to google Cloud disk ：

from google.colab import drive
drive.mount('/content/drive',force_remount = True)

After successful execution , Will be displayed ： Mounted at /content/drive

Step#2 Go to subdirectory My Drive:

import os
root_dir = "/content/drive/My Drive/"
os.chdir(root_dir)

confirm ：

Show : /content/drive/MyDrive

Step#3 Create subdirectories "Colab_Notebooks" ：

!mkdir "Colab_Notebooks"

Step#4 Go to subdirectory :

import os
os.chdir("Colab_Notebooks")

Step#5 Then create the next level and directory "Project_folder":

!mkdir "Project_folder"

Step#6 Enter the newly created next level subdirectory ：

import os
root_dir = "/content/drive/My Drive/"
project_folder = "Colab_Notebooks/Project_folder/"
os.chdir(root_dir + project_folder)

Step#7 Check the current directory ：

!pwd

Show results ：/content/drive/My Drive/Colab_Notebooks/Project_folder

Step#8 Now? , Start file upload ：

from google.colab import files
files.upload()

After executing this code , A dialog window for selecting files will be displayed .
I can upload my files ： myfunctions.py

I have this file in my local C The plate is ready . After selecting this file , It will be uploaded automatically .

In my myfunctions.py , It has the following contents ：

def sum_two(num_1, num_2):
  result = num_1 + num_2
  return result

Step#9 Now? , I can make function calls across files ：

import myfunctions
result = myfunctions.sum_two(100,200)
print (result)

Show results ： 300