The technical principles and data interaction of GSPREAD libraries in Python analysis

Gspread is a third -party library used in Python. It provides a simple and powerful way to interact with the Google table.This article will explore the technical principles of GSPREAD libraries in Python and the method of data interaction. Technical principle: The implementation of the GSPREAD library is based on Google Sheets API.It uses the RESTFUL API provided by Google to communicate with the Google table, and to complete the operation of data reading, writing, updating, and deleting by issuing HTTP requests.GSPREAD uses the OAUTH2.0 protocol to perform authentication and access to token to obtain access permissions for Google Sheets. Data interaction implementation method: 1. Install the GSPREAD library: First of all, you need to install the GSPREAD library. You can use the PIP command to install it in the command line. python pip install gspread 2. Create Google Sheets API proof: Before using GSPREAD, you need to create a project and enable the Google Sheets API to generate the required credential files.For detailed creation and enable API steps, please refer to Google documents. 3. Import the necessary classes and modules: In the Python program, we first need to introduce the necessary classes and modules, including the Gspread class library itself and the OAUTH2Client class library. python import gspread from oauth2client.service_account import ServiceAccountCredentials 4. Connect to Google Form: Use the credential file to connect to the Google form to create a client object. python scope = ['https://spreadsheets.google.com/feeds', 'https://www.googleapis.com/auth/drive'] credentials = ServiceAccountCredentials.from_json_keyfile_name('credentials.json', scope) client = gspread.authorize(credentials) 5. Open the worksheet: Select a worksheet to be operated. You can use the name or unique identifier of the worksheet to open it. python Worksheet = Client.open ('Form Name') .sheet1 6. Read and write data: You can read and write data through the method of calling the workheet object.For example, you can use the `Get_all_values () method to obtain the data of the entire worksheet, and use the` update_cell (row, color, value) method to update the value of the specified cell. python data = worksheet.get_all_values() worksheet.update_cell(1, 1, 'New Value') The above is a sample code. By using the relevant functions of the GSPREAD library, we can easily read and write data into the Google table.In order to fully run the code, the actual table name and credential file name need to be replaced with the correct value. Summarize: The GSPREAD library uses Google Sheets API to verify the identity through the OAUTH2.0 protocol, and communicates with the Google table with the RESTFUL API.By importing the necessary classes and modules, connect to the Google table, open the worksheet, and call the corresponding method to realize the operation of data reading, writing, updating, and deleting.The Gspread class library provides a simple and powerful way for Python developers to interact with the Google table.