可以在API请求中添加一个检查步骤以确保不会重复创建记录。首先，利用Airtable API获取Airtable表中的所有记录，然后在请求之前检查要创建的记录是否已经存在。如果已经存在，则不要提交API请求。以下是一个示例代码段：

import requests

# Airtable API endpoint and authentication headers
api_key = "YOUR_API_KEY"
base_id = "YOUR_BASE_ID"
table_name = "YOUR_TABLE_NAME"
headers = {
    "Authorization": f"Bearer {api_key}",
    "Content-Type": "application/json"
}
url = f"https://api.airtable.com/v0/{base_id}/{table_name}"

# Get all records from table
response = requests.get(url, headers=headers)
records = response.json().get("records")

# Check if new record already exists
new_record = {
    "fields": {
        "Name": "John Doe",
        "Age": 30,
        "Email": "john.doe@email.com"
    }
}
for record in records:
    if record.get("fields") == new_record.get("fields"):
        print("Record already exists!")
        break
else:
    # Create new record
    response = requests.post(url, headers=headers, json=new_record)
    print("New record created successfully.")

在上述例子中，“new_record”变量包含要创建的新记录的字段。检查循环遍历“records”变量，与新记录进行比较。如果找到匹配项，执行“break”语句以退出循环并打印消息“Record already exists!”。如果没有找到匹配项，则执行“else”语句，向Airtable表中添加新记录，并打印消息“New record created successfully.”