Use constants

docs/configuration.md

@@ -16,7 +16,7 @@ The table below will list all configuration parameters.
 |----------|---------|----------|-------------|
 | `max_open_trades` | 3 | Yes | Number of trades open your bot will have.
 | `stake_currency` | BTC | Yes | Crypto-currency used for trading.
-| `stake_amount` | 0.05 | Yes | Amount of crypto-currency your bot will use for each trade. Per default, the bot will use (0.05 BTC x 3) = 0.15 BTC in total will be always engaged. 'unlimited' is used to allow a bot to use all avaliable balance.
+| `stake_amount` | 0.05 | Yes | Amount of crypto-currency your bot will use for each trade. Per default, the bot will use (0.05 BTC x 3) = 0.15 BTC in total will be always engaged. Set it to 'unlimited' to allow the bot to use all avaliable balance.
 | `ticker_interval` | [1m, 5m, 30m, 1h, 1d] | No | The ticker interval to use (1min, 5 min, 30 min, 1 hour or 1 day). Default is 5 minutes
 | `fiat_display_currency` | USD | Yes | Fiat currency used to show your profits. More information below. 
 | `dry_run` | true | Yes | Define if the bot must be in Dry-run or production mode. 

freqtrade/constants.py

@@ -9,6 +9,7 @@ TICKER_INTERVAL = 5  # min
 HYPEROPT_EPOCH = 100  # epochs
 RETRY_TIMEOUT = 30  # sec
 DEFAULT_STRATEGY = 'DefaultStrategy'
+UNLIMITED_STAKE_AMOUNT = 'unlimited'
 
 TICKER_INTERVAL_MINUTES = {
     '1m': 1,
@@ -34,7 +35,7 @@ CONF_SCHEMA = {
         'stake_currency': {'type': 'string', 'enum': ['BTC', 'ETH', 'USDT']},
         'stake_amount': {'anyOf': [
             {'type': 'integer', 'minimum': 0.0005},
-            {'constant': 'unlimited'}
+            {'constant': UNLIMITED_STAKE_AMOUNT}
         ]},
         'fiat_display_currency': {'type': 'string', 'enum': ['AUD', 'BRL', 'CAD', 'CHF',
                                                              'CLP', 'CNY', 'CZK', 'DKK',

freqtrade/freqtradebot.py

@@ -259,7 +259,7 @@ class FreqtradeBot(object):
         stake_amount = self.config['stake_amount']
         avaliable_amount = exchange.get_balance(self.config['stake_currency'])
 
-        if stake_amount == 'unlimited':
+        if stake_amount == constants.UNLIMITED_STAKE_AMOUNT:
             open_trades = len(Trade.query.filter(Trade.is_open.is_(True)).all())
             if open_trades == self.config['max_open_trades']:
                 return 0

freqtrade/optimize/backtesting.py

@@ -13,7 +13,7 @@ from pandas import DataFrame
 from tabulate import tabulate
 
 import freqtrade.optimize as optimize
-from freqtrade import exchange, DependencyException
+from freqtrade import exchange, constants, DependencyException
 from freqtrade.analyze import Analyze
 from freqtrade.arguments import Arguments
 from freqtrade.configuration import Configuration
@@ -296,8 +296,9 @@ def setup_configuration(args: Namespace) -> Dict[str, Any]:
     config['exchange']['key'] = ''
     config['exchange']['secret'] = ''
 
-    if config['stake_amount'] == 'unlimited':
-        raise DependencyException('stake amount could not be "unlimited" for backtesting')
+    if config['stake_amount'] == constants.UNLIMITED_STAKE_AMOUNT:
+        raise DependencyException('stake amount could not be "%s" for backtesting' %
+                                  constants.UNLIMITED_STAKE_AMOUNT)
 
     return config
 

freqtrade/tests/test_freqtradebot.py

@@ -15,7 +15,7 @@ import pytest
 import requests
 from sqlalchemy import create_engine
 
-from freqtrade import DependencyException, OperationalException, TemporaryError
+from freqtrade import constants, DependencyException, OperationalException, TemporaryError
 from freqtrade.freqtradebot import FreqtradeBot
 from freqtrade.persistence import Trade
 from freqtrade.state import State
@@ -280,7 +280,7 @@ def test_get_trade_stake_amount_unlimited_amount(default_conf,
     )
 
     conf = deepcopy(default_conf)
-    conf['stake_amount'] = 'unlimited'
+    conf['stake_amount'] = constants.UNLIMITED_STAKE_AMOUNT
     conf['max_open_trades'] = 2
 
     freqtrade = FreqtradeBot(conf, create_engine('sqlite://'))