futures_sign.py

import hmac
import time
import hashlib
import requests
import json
from urllib.parse import urlencode
from cred import KEY, SECRET

""" This is a very simple script working on Binance API
- work with USER_DATA endpoint with no third party dependency
- work with testnet
Provide the API key and secret, and it's ready to go
Because USER_DATA endpoints require signature:
- call `send_signed_request` for USER_DATA endpoints
- call `send_public_request` for public endpoints
```python
python futures.py
```
"""

# BASE_URL = 'https://fapi.binance.com' # production base url
BASE_URL = 'https://fapi.binance.com' # testnet base url

''' ======  begin of functions, you don't need to touch ====== '''
def hashing(query_string):
    return hmac.new(SECRET.encode('utf-8'), query_string.encode('utf-8'), hashlib.sha256).hexdigest()

def get_timestamp():
    return int(time.time() * 1000)

def dispatch_request(http_method):
    session = requests.Session()
    session.headers.update({
        'Content-Type': 'application/json;charset=utf-8',
        'X-MBX-APIKEY': KEY
    })
    return {
        'GET': session.get,
        'DELETE': session.delete,
        'PUT': session.put,
        'POST': session.post,
    }.get(http_method, 'GET')

# used for sending request requires the signature
def send_signed_request(http_method, url_path, payload={}):
#    print('base=',BASE_URL)
    query_string = urlencode(payload)
    # replace single quote to double quote
    query_string = query_string.replace('%27', '%22')
    if query_string:
        query_string = "{}&timestamp={}".format(query_string, get_timestamp())
    else:
        query_string = 'timestamp={}'.format(get_timestamp())

    url = BASE_URL + url_path + '?' + query_string + '&signature=' + hashing(query_string)
#    print("{} {}".format(http_method, url))
    params = {'url': url, 'params': {}}
    response = dispatch_request(http_method)(**params)
    return response.json()

# used for sending public data request
def send_public_request(url_path, payload={}):
    query_string = urlencode(payload, True)
    url = BASE_URL + url_path
    if query_string:
        url = url + '?' + query_string
    print("{}".format(url))
    response = dispatch_request('GET')(url=url)
    return response.json()

''' ======  end of functions ====== '''