使用Python从API抓取加密交易所数据：无法获取后续记录求助

Hey Jason, sounds like you're almost there with your Python scraper—great job getting the first record working! Let's tweak things so you can pull every entry in the dataset instead of just the first one. Here are the most common fixes based on how crypto exchange APIs usually work:

Scenario 1: Your API Returns a List of Records (No Pagination Needed) #

Chances are, right now you're grabbing the first item with something like data[0]. If the API sends back a straight list of records (or a nested list under a key like results), just loop through the whole collection:

Example Code #

import requests
import json  # Useful for pretty-printing to inspect data

# Fetch the data
response = requests.get("https://api.your-exchange.com/your-data-endpoint")
response.raise_for_status()  # Catch HTTP errors early
full_data = response.json()

# First, inspect the structure to find where records live (run this once!)
print(json.dumps(full_data, indent=2))

# If records are in the top-level list:
for record in full_data:
    print("Processing record:", record)
    # Add your logic here—save to CSV, parse fields, etc.

# If records are nested under a key (like "data" or "results"):
for record in full_data["data"]:
    print("Processing record:", record)

Scenario 2: The API Uses Pagination (Most Common for Large Datasets) #

Nearly all crypto exchange APIs limit how many records you get per request to avoid overwhelming their servers. You'll need to loop through pages using parameters like page, limit, or cursor:

Example Pagination Code #

import requests
import time

base_url = "https://api.your-exchange.com/your-data-endpoint"
current_page = 1
items_per_page = 50  # Check the API docs for allowed limits
has_more_records = True

while has_more_records:
    # Build request parameters for the current page
    params = {
        "page": current_page,
        "limit": items_per_page
    }
    
    response = requests.get(base_url, params=params)
    response.raise_for_status()
    page_data = response.json()
    
    # Extract the records from the page (adjust the key to match your API)
    records = page_data.get("records", [])
    
    # If no records came back, we're done
    if not records:
        has_more_records = False
        break
    
    # Process each record on the current page
    for record in records:
        print("Processing record:", record)
        # Add your custom logic here
    
    # Move to the next page
    current_page += 1
    # Add a small delay to avoid hitting rate limits
    time.sleep(0.5)

Quick Tips to Debug #

• Always inspect the full API response first (using json.dumps with indent) to understand where your records are stored—don't guess!
• Check the exchange's API docs for pagination rules (some use cursor tokens instead of page numbers)
• Add error handling for timeouts or rate limits (many APIs return 429 if you request too fast)

内容的提问来源于stack exchange，提问作者Jason Roldan