exchange.set_sandbox_mode(True)

# -*- coding: utf-8 -*-

import os
from random import randint
import sys
from pprint import pprint


import ccxt  # noqa: E402


print('CCXT Version:', ccxt.__version__)

exchange = ccxt.gateio({
   'apiKey': 'YOUR_API_KEY',
   'secret': 'YOUR_SECRET',
   'options': {
       'defaultType': 'swap',
   },
})

# exchange.set_sandbox_mode(True) 

markets = exchange.load_markets()

exchange.verbose = True  # uncomment for debugging purposes if necessary


# Example: creating and closing a contract
symbol = 'LTC/USDT:USDT'
order_type = 'market'
side = 'buy'
amount = 1

try:
   # fetching current balance
   balance = exchange.fetch_balance()
   # print(balance)

   # placing an order/ opening contract position
   order = exchange.create_order(symbol, order_type, side, amount)
   # print(order)

   # closing it by issuing an oposite contract 
   # and therefore close our previous position
   side = 'sell'
   type = 'market'
   reduce_only = True
   params = {'reduce_only': reduce_only}
   opositeOrder = exchange.create_order(symbol, order_type, side, amount, None, params)
   print(opositeOrder)
except Exception as e:
   print(type(e).__name__, str(e))