はい、これがコードブロックです：
```python
import os
import gspread
from oauth2client.service_account import ServiceAccountCredentials

# Use your Google API credentials to authenticate
scope = ['https://spreadsheets.google.com/feeds',
         'https://www.googleapis.com/auth/drive']

credentials = ServiceAccountCredentials.from_json_keyfile_name(
    os.environ['GOOGLE_API_CREDENTIALS'], scope)

# Authenticate and access the Google Sheets API
client = gspread.authorize(credentials)

# Open the specific Google Sheet you want to access
sheet = client.open("My Google Sheet").sheet1

# Iterate over the rows in the sheet
for row in sheet.get_all_values():
    print(row)
```
Yes, here it is in code blocks: 
```python
import os
import gspread
from oauth2client.service_account import ServiceAccountCredentials

# Use your Google API credentials to authenticate
scope = ['https://spreadsheets.google.com/feeds',
         'https://www.googleapis.com/auth/drive']

credentials = ServiceAccountCredentials.from_json_keyfile_name(
    os.environ['GOOGLE_API_CREDENTIALS'], scope)

# Authenticate and access the Google Sheets API
client = gspread.authorize(credentials)

# Open the specific Google Sheet you want to access
sheet = client.open("My Google Sheet").sheet1

# Iterate over the rows in the sheet
for row in sheet.get_all_values():
    print(row)
```