Merge pull request #2831 from xmatthias/feat/new_config

introduce new-config subcommand

config.json.example

@@ -4,7 +4,7 @@
     "stake_amount": 0.05,
     "tradable_balance_ratio": 0.99,
     "fiat_display_currency": "USD",
-    "ticker_interval" : "5m",
+    "ticker_interval": "5m",
     "dry_run": false,
     "trailing_stop": false,
     "unfilledtimeout": {

config_binance.json.example

@@ -4,7 +4,7 @@
     "stake_amount": 0.05,
     "tradable_balance_ratio": 0.99,
     "fiat_display_currency": "USD",
-    "ticker_interval" : "5m",
+    "ticker_interval": "5m",
     "dry_run": true,
     "trailing_stop": false,
     "unfilledtimeout": {

config_full.json.example

@@ -4,7 +4,7 @@
     "stake_amount": 0.05,
     "tradable_balance_ratio": 0.99,
     "fiat_display_currency": "USD",
-    "amount_reserve_percent" : 0.05,
+    "amount_reserve_percent": 0.05,
     "amend_last_stake_amount": false,
     "last_stake_amount_min_ratio": 0.5,
     "dry_run": false,

config_kraken.json.example

@@ -4,7 +4,7 @@
     "stake_amount": 10,
     "tradable_balance_ratio": 0.99,
     "fiat_display_currency": "EUR",
-    "ticker_interval" : "5m",
+    "ticker_interval": "5m",
     "dry_run": true,
     "trailing_stop": false,
     "unfilledtimeout": {

docs/index.md

@@ -51,12 +51,15 @@ To run this bot we recommend you a cloud instance with a minimum of:
 
 ### Software requirements
 
+- Docker (Recommended)
+
+Alternatively
+
 - Python 3.6.x
 - pip (pip3)
 - git
 - TA-Lib
 - virtualenv (Recommended)
-- Docker (Recommended)
 
 ## Support
 
@@ -67,4 +70,4 @@ Click [here](https://join.slack.com/t/highfrequencybot/shared_invite/enQtNjU5ODc
 
 ## Ready to try?
 
-Begin by reading our installation guide [here](installation).
+Begin by reading our installation guide [for docker](docker.md), or for [installation without docker](installation.md).

docs/installation.md

@@ -31,7 +31,7 @@ Freqtrade provides the Linux/MacOS Easy Installation script to install all depen
 !!! Note
     Windows installation is explained [here](#windows).
 
-The easiest way to install and run Freqtrade is to clone the bot GitHub repository and then run the Easy Installation script, if it's available for your platform.
+The easiest way to install and run Freqtrade is to clone the bot Github repository and then run the Easy Installation script, if it's available for your platform.
 
 !!! Note "Version considerations"
     When cloning the repository the default working branch has the name `develop`. This branch contains all last features (can be considered as relatively stable, thanks to automated tests). The `master` branch contains the code of the last release (done usually once per month on an approximately one week old snapshot of the `develop` branch to prevent packaging bugs, so potentially it's more stable).
@@ -47,6 +47,7 @@ cd freqtrade
 git checkout master  # Optional, see (1)
 ./setup.sh --install
 ```
+
 (1) This command switches the cloned repository to the use of the `master` branch. It's not needed if you wish to stay on the `develop` branch. You may later switch between branches at any time with the `git checkout master`/`git checkout develop` commands.
 
 ## Easy Installation Script (Linux/MacOS)
@@ -129,6 +130,17 @@ bash setup.sh -i
 
 #### 1. Install TA-Lib
 
+Use the provided ta-lib installation script
+
+```bash
+sudo ./build_helpers/install_ta-lib.sh
+```
+
+!!! Note
+    This will use the ta-lib tar.gz included in this repository.
+
+##### TA-Lib manual installation
+
 Official webpage: https://mrjbq7.github.io/ta-lib/install.html
 
 ```bash
@@ -184,7 +196,8 @@ python3 -m pip install -e .
 # Initialize the user_directory
 freqtrade create-userdir --userdir user_data/
 
-cp config.json.example config.json
+# Create a new configuration file
+freqtrade new-config --config config.json
 ```
 
 > *To edit the config please refer to [Bot Configuration](configuration.md).*

docs/utils.md

@@ -36,6 +36,38 @@ optional arguments:
     └── sample_strategy.py
 ```
 
+## Create new config
+
+Creates a new configuration file, asking some questions which are important selections for a configuration.
+
+```
+usage: freqtrade new-config [-h] [-c PATH]
+
+optional arguments:
+  -h, --help            show this help message and exit
+  -c PATH, --config PATH
+                        Specify configuration file (default: `config.json`). Multiple --config options may be used. Can be set to `-`
+                        to read config from stdin.
+```
+
+!!! Warning
+    Only vital questions are asked. Freqtrade offers a lot more configuration possibilities, which are listed in the [Configuration documentation](configuration.md#configuration-parameters)
+
+### Create config examples
+
+```
+$ freqtrade new-config --config config_binance.json
+
+? Do you want to enable Dry-run (simulated trades)?  Yes
+? Please insert your stake currency: BTC
+? Please insert your stake amount: 0.05
+? Please insert max_open_trades (Integer or 'unlimited'): 5
+? Please insert your ticker interval: 15m
+? Please insert your display Currency (for reporting): USD
+? Select exchange  binance
+? Do you want to enable Telegram?  No
+```
+
 ## Create new strategy
 
 Creates a new strategy from a template similar to SampleStrategy.
@@ -220,20 +252,31 @@ All exchanges supported by the ccxt library: _1btcxe, acx, adara, allcoin, anxpr
 Use the `list-timeframes` subcommand to see the list of ticker intervals (timeframes) available for the exchange.
 
 ```
-usage: freqtrade list-timeframes [-h] [--exchange EXCHANGE] [-1]
+usage: freqtrade list-timeframes [-h] [-v] [--logfile FILE] [-V] [-c PATH] [-d PATH] [--userdir PATH] [--exchange EXCHANGE] [-1]
 
 optional arguments:
-  -h, --help           show this help message and exit
+  -h, --help            show this help message and exit
-  --exchange EXCHANGE  Exchange name (default: `bittrex`). Only valid if no
+  --exchange EXCHANGE   Exchange name (default: `bittrex`). Only valid if no config is provided.
-                       config is provided.
+  -1, --one-column      Print output in one column.
-  -1, --one-column     Print output in one column.
+
+Common arguments:
+  -v, --verbose         Verbose mode (-vv for more, -vvv to get all messages).
+  --logfile FILE        Log to the file specified. Special values are: 'syslog', 'journald'. See the documentation for more details.
+  -V, --version         show program's version number and exit
+  -c PATH, --config PATH
+                        Specify configuration file (default: `config.json`). Multiple --config options may be used. Can be set to `-`
+                        to read config from stdin.
+  -d PATH, --datadir PATH
+                        Path to directory with historical backtesting data.
+  --userdir PATH, --user-data-dir PATH
+                        Path to userdata directory.
 
 ```
 
 * Example: see the timeframes for the 'binance' exchange, set in the configuration file:
 
 ```
-$ freqtrade -c config_binance.json list-timeframes
+$ freqtrade list-timeframes -c config_binance.json
 ...
 Timeframes available for the exchange `binance`: 1m, 3m, 5m, 15m, 30m, 1h, 2h, 4h, 6h, 8h, 12h, 1d, 3d, 1w, 1M
 ```
@@ -257,14 +300,16 @@ You can print info about any pair/market with these subcommands - and you can fi
 These subcommands have same usage and same set of available options:
 
 ```
-usage: freqtrade list-markets [-h] [--exchange EXCHANGE] [--print-list]
+usage: freqtrade list-markets [-h] [-v] [--logfile FILE] [-V] [-c PATH]
-                              [--print-json] [-1] [--print-csv]
+                              [-d PATH] [--userdir PATH] [--exchange EXCHANGE]
+                              [--print-list] [--print-json] [-1] [--print-csv]
                               [--base BASE_CURRENCY [BASE_CURRENCY ...]]
                               [--quote QUOTE_CURRENCY [QUOTE_CURRENCY ...]]
                               [-a]
 
-usage: freqtrade list-pairs [-h] [--exchange EXCHANGE] [--print-list]
+usage: freqtrade list-pairs [-h] [-v] [--logfile FILE] [-V] [-c PATH]
-                            [--print-json] [-1] [--print-csv]
+                            [-d PATH] [--userdir PATH] [--exchange EXCHANGE]
+                            [--print-list] [--print-json] [-1] [--print-csv]
                             [--base BASE_CURRENCY [BASE_CURRENCY ...]]
                             [--quote QUOTE_CURRENCY [QUOTE_CURRENCY ...]] [-a]
 
@@ -283,6 +328,22 @@ optional arguments:
                         Specify quote currency(-ies). Space-separated list.
   -a, --all             Print all pairs or market symbols. By default only
                         active ones are shown.
+
+Common arguments:
+  -v, --verbose         Verbose mode (-vv for more, -vvv to get all messages).
+  --logfile FILE        Log to the file specified. Special values are:
+                        'syslog', 'journald'. See the documentation for more
+                        details.
+  -V, --version         show program's version number and exit
+  -c PATH, --config PATH
+                        Specify configuration file (default: `config.json`).
+                        Multiple --config options may be used. Can be set to
+                        `-` to read config from stdin.
+  -d PATH, --datadir PATH
+                        Path to directory with historical backtesting data.
+  --userdir PATH, --user-data-dir PATH
+                        Path to userdata directory.
+
 ```
 
 By default, only active pairs/markets are shown. Active pairs/markets are those that can currently be traded
@@ -304,7 +365,7 @@ $ freqtrade list-pairs --quote USD --print-json
 human-readable list with summary:
 
 ```
-$ freqtrade -c config_binance.json list-pairs --all --base BTC ETH --quote USDT USD --print-list
+$ freqtrade list-pairs -c config_binance.json --all --base BTC ETH --quote USDT USD --print-list
 ```
 
 * Print all markets on exchange "Kraken", in the tabular format:

freqtrade/commands/__init__.py

@@ -7,6 +7,7 @@ Note: Be careful with file-scoped imports in these subfiles.
     as they are parsed on startup, nothing containing optional modules should be loaded.
 """
 from freqtrade.commands.arguments import Arguments
+from freqtrade.commands.build_config_commands import start_new_config
 from freqtrade.commands.data_commands import start_download_data
 from freqtrade.commands.deploy_commands import (start_create_userdir,
                                                 start_new_hyperopt,

freqtrade/commands/arguments.py

@@ -45,6 +45,8 @@ ARGS_TEST_PAIRLIST = ["config", "quote_currencies", "print_one_column", "list_pa
 
 ARGS_CREATE_USERDIR = ["user_data_dir", "reset"]
 
+ARGS_BUILD_CONFIG = ["config"]
+
 ARGS_BUILD_STRATEGY = ["user_data_dir", "strategy", "template"]
 
 ARGS_BUILD_HYPEROPT = ["user_data_dir", "hyperopt", "template"]
@@ -136,7 +138,7 @@ class Arguments:
                                         start_hyperopt_list, start_hyperopt_show,
                                         start_list_exchanges, start_list_hyperopts,
                                         start_list_markets, start_list_strategies,
-                                        start_list_timeframes,
+                                        start_list_timeframes, start_new_config,
                                         start_new_hyperopt, start_new_strategy,
                                         start_plot_dataframe, start_plot_profit,
                                         start_backtesting, start_hyperopt, start_edge,
@@ -180,6 +182,12 @@ class Arguments:
         create_userdir_cmd.set_defaults(func=start_create_userdir)
         self._build_args(optionlist=ARGS_CREATE_USERDIR, parser=create_userdir_cmd)
 
+        # add new-config subcommand
+        build_config_cmd = subparsers.add_parser('new-config',
+                                                 help="Create new config")
+        build_config_cmd.set_defaults(func=start_new_config)
+        self._build_args(optionlist=ARGS_BUILD_CONFIG, parser=build_config_cmd)
+
         # add new-strategy subcommand
         build_strategy_cmd = subparsers.add_parser('new-strategy',
                                                    help="Create new strategy")

freqtrade/commands/build_config_commands.py

@@ -0,0 +1,193 @@
+import logging
+from pathlib import Path
+from typing import Any, Dict
+
+from questionary import Separator, prompt
+
+from freqtrade.constants import UNLIMITED_STAKE_AMOUNT
+from freqtrade.exchange import available_exchanges, MAP_EXCHANGE_CHILDCLASS
+from freqtrade.misc import render_template
+from freqtrade.exceptions import OperationalException
+logger = logging.getLogger(__name__)
+
+
+def validate_is_int(val):
+    try:
+        _ = int(val)
+        return True
+    except Exception:
+        return False
+
+
+def validate_is_float(val):
+    try:
+        _ = float(val)
+        return True
+    except Exception:
+        return False
+
+
+def ask_user_overwrite(config_path: Path) -> bool:
+    questions = [
+        {
+            "type": "confirm",
+            "name": "overwrite",
+            "message": f"File {config_path} already exists. Overwrite?",
+            "default": False,
+        },
+    ]
+    answers = prompt(questions)
+    return answers['overwrite']
+
+
+def ask_user_config() -> Dict[str, Any]:
+    """
+    Ask user a few questions to build the configuration.
+    Interactive questions built using https://github.com/tmbo/questionary
+    :returns: Dict with keys to put into template
+    """
+    questions = [
+        {
+            "type": "confirm",
+            "name": "dry_run",
+            "message": "Do you want to enable Dry-run (simulated trades)?",
+            "default": True,
+        },
+        {
+            "type": "text",
+            "name": "stake_currency",
+            "message": "Please insert your stake currency:",
+            "default": 'BTC',
+        },
+        {
+            "type": "text",
+            "name": "stake_amount",
+            "message": "Please insert your stake amount:",
+            "default": "0.01",
+            "validate": lambda val: val == UNLIMITED_STAKE_AMOUNT or validate_is_float(val),
+        },
+        {
+            "type": "text",
+            "name": "max_open_trades",
+            "message": f"Please insert max_open_trades (Integer or '{UNLIMITED_STAKE_AMOUNT}'):",
+            "default": "3",
+            "validate": lambda val: val == UNLIMITED_STAKE_AMOUNT or validate_is_int(val)
+        },
+        {
+            "type": "text",
+            "name": "ticker_interval",
+            "message": "Please insert your ticker interval:",
+            "default": "5m",
+        },
+        {
+            "type": "text",
+            "name": "fiat_display_currency",
+            "message": "Please insert your display Currency (for reporting):",
+            "default": 'USD',
+        },
+        {
+            "type": "select",
+            "name": "exchange_name",
+            "message": "Select exchange",
+            "choices": [
+                "binance",
+                "binanceje",
+                "binanceus",
+                "bittrex",
+                "kraken",
+                Separator(),
+                "other",
+            ],
+        },
+        {
+            "type": "autocomplete",
+            "name": "exchange_name",
+            "message": "Type your exchange name (Must be supported by ccxt)",
+            "choices": available_exchanges(),
+            "when": lambda x: x["exchange_name"] == 'other'
+        },
+        {
+            "type": "password",
+            "name": "exchange_key",
+            "message": "Insert Exchange Key",
+            "when": lambda x: not x['dry_run']
+        },
+        {
+            "type": "password",
+            "name": "exchange_secret",
+            "message": "Insert Exchange Secret",
+            "when": lambda x: not x['dry_run']
+        },
+        {
+            "type": "confirm",
+            "name": "telegram",
+            "message": "Do you want to enable Telegram?",
+            "default": False,
+        },
+        {
+            "type": "password",
+            "name": "telegram_token",
+            "message": "Insert Telegram token",
+            "when": lambda x: x['telegram']
+        },
+        {
+            "type": "text",
+            "name": "telegram_chat_id",
+            "message": "Insert Telegram chat id",
+            "when": lambda x: x['telegram']
+        },
+    ]
+    answers = prompt(questions)
+
+    if not answers:
+        # Interrupted questionary sessions return an empty dict.
+        raise OperationalException("User interrupted interactive questions.")
+
+    return answers
+
+
+def deploy_new_config(config_path: Path, selections: Dict[str, Any]) -> None:
+    """
+    Applies selections to the template and writes the result to config_path
+    :param config_path: Path object for new config file. Should not exist yet
+    :param selecions: Dict containing selections taken by the user.
+    """
+    from jinja2.exceptions import TemplateNotFound
+    try:
+        exchange_template = MAP_EXCHANGE_CHILDCLASS.get(
+            selections['exchange_name'], selections['exchange_name'])
+
+        selections['exchange'] = render_template(
+            templatefile=f"subtemplates/exchange_{exchange_template}.j2",
+            arguments=selections
+            )
+    except TemplateNotFound:
+        selections['exchange'] = render_template(
+            templatefile=f"subtemplates/exchange_generic.j2",
+            arguments=selections
+        )
+
+    config_text = render_template(templatefile='base_config.json.j2',
+                                  arguments=selections)
+
+    logger.info(f"Writing config to `{config_path}`.")
+    config_path.write_text(config_text)
+
+
+def start_new_config(args: Dict[str, Any]) -> None:
+    """
+    Create a new strategy from a template
+    Asking the user questions to fill out the templateaccordingly.
+    """
+
+    config_path = Path(args['config'][0])
+    if config_path.exists():
+        overwrite = ask_user_overwrite(config_path)
+        if overwrite:
+            config_path.unlink()
+        else:
+            raise OperationalException(
+                f"Configuration file `{config_path}` already exists. "
+                "Please delete it or use a different configuration file name.")
+    selections = ask_user_config()
+    deploy_new_config(config_path, selections)

freqtrade/misc.py

@@ -139,5 +139,4 @@ def render_template(templatefile: str, arguments: dict = {}) -> str:
         autoescape=select_autoescape(['html', 'xml'])
     )
     template = env.get_template(templatefile)
-
     return template.render(**arguments)

freqtrade/templates/base_config.json.j2

@@ -0,0 +1,58 @@
+{
+    "max_open_trades": {{ max_open_trades }},
+    "stake_currency": "{{ stake_currency }}",
+    "stake_amount": {{ stake_amount }},
+    "tradable_balance_ratio": 0.99,
+    "fiat_display_currency": "{{ fiat_display_currency }}",
+    "ticker_interval": "{{ ticker_interval }}",
+    "dry_run": {{ dry_run | lower }},
+    "unfilledtimeout": {
+        "buy": 10,
+        "sell": 30
+    },
+    "bid_strategy": {
+        "ask_last_balance": 0.0,
+        "use_order_book": false,
+        "order_book_top": 1,
+        "check_depth_of_market": {
+            "enabled": false,
+            "bids_to_ask_delta": 1
+        }
+    },
+    "ask_strategy": {
+        "use_order_book": false,
+        "order_book_min": 1,
+        "order_book_max": 9,
+        "use_sell_signal": true,
+        "sell_profit_only": false,
+        "ignore_roi_if_buy_signal": false
+    },
+    {{ exchange | indent(4) }},
+    "pairlists": [
+        {"method": "StaticPairList"}
+    ],
+    "edge": {
+        "enabled": false,
+        "process_throttle_secs": 3600,
+        "calculate_since_number_of_days": 7,
+        "allowed_risk": 0.01,
+        "stoploss_range_min": -0.01,
+        "stoploss_range_max": -0.1,
+        "stoploss_range_step": -0.01,
+        "minimum_winrate": 0.60,
+        "minimum_expectancy": 0.20,
+        "min_trade_number": 10,
+        "max_trade_duration_minute": 1440,
+        "remove_pumps": false
+    },
+    "telegram": {
+        "enabled": {{ telegram | lower }},
+        "token": "{{ telegram_token }}",
+        "chat_id": "{{ telegram_chat_id }}"
+    },
+    "initial_state": "running",
+    "forcebuy_enable": false,
+    "internals": {
+        "process_throttle_secs": 5
+    }
+}

freqtrade/templates/subtemplates/exchange_binance.j2

@@ -0,0 +1,41 @@
+"exchange": {
+    "name": "{{ exchange_name | lower }}",
+    "key": "{{ exchange_key }}",
+    "secret": "{{ exchange_secret }}",
+    "ccxt_config": {"enableRateLimit": true},
+    "ccxt_async_config": {
+        "enableRateLimit": true,
+        "rateLimit": 200
+    },
+    "pair_whitelist": [
+        "ALGO/BTC",
+        "ATOM/BTC",
+        "BAT/BTC",
+        "BCH/BTC",
+        "BRD/BTC",
+        "EOS/BTC",
+        "ETH/BTC",
+        "IOTA/BTC",
+        "LINK/BTC",
+        "LTC/BTC",
+        "NEO/BTC",
+        "NXS/BTC",
+        "XMR/BTC",
+        "XRP/BTC",
+        "XTZ/BTC"
+    ],
+    "pair_blacklist": [
+        "BNB/BTC",
+        "BNB/BUSD",
+        "BNB/ETH",
+        "BNB/EUR",
+        "BNB/NGN",
+        "BNB/PAX",
+        "BNB/RUB",
+        "BNB/TRY",
+        "BNB/TUSD",
+        "BNB/USDC",
+        "BNB/USDS",
+        "BNB/USDT",
+    ]
+}

freqtrade/templates/subtemplates/exchange_bittrex.j2

@@ -0,0 +1,24 @@
+"exchange": {
+    "name": "{{ exchange_name | lower }}",
+    "key": "{{ exchange_key }}",
+    "secret": "{{ exchange_secret }}",
+    "ccxt_config": {"enableRateLimit": true},
+    "ccxt_async_config": {
+        "enableRateLimit": true,
+        "rateLimit": 500
+    },
+    "pair_whitelist": [
+        "ETH/BTC",
+        "LTC/BTC",
+        "ETC/BTC",
+        "DASH/BTC",
+        "ZEC/BTC",
+        "XLM/BTC",
+        "XRP/BTC",
+        "TRX/BTC",
+        "ADA/BTC",
+        "XMR/BTC"
+    ],
+    "pair_blacklist": [
+    ]
+}

freqtrade/templates/subtemplates/exchange_generic.j2

@@ -0,0 +1,15 @@
+"exchange": {
+    "name": "{{ exchange_name | lower }}",
+    "key": "{{ exchange_key }}",
+    "secret": "{{ exchange_secret }}",
+    "ccxt_config": {"enableRateLimit": true},
+    "ccxt_async_config": {
+        "enableRateLimit": true
+    },
+    "pair_whitelist": [
+
+    ],
+    "pair_blacklist": [
+
+    ]
+}

freqtrade/templates/subtemplates/exchange_kraken.j2

@@ -0,0 +1,36 @@
+"download_trades": true,
+"exchange": {
+    "name": "kraken",
+    "key": "{{ exchange_key }}",
+    "secret": "{{ exchange_secret }}",
+    "ccxt_config": {"enableRateLimit": true},
+    "ccxt_async_config": {
+        "enableRateLimit": true,
+        "rateLimit": 1000
+    },
+    "pair_whitelist": [
+        "ADA/EUR",
+        "ATOM/EUR",
+        "BAT/EUR",
+        "BCH/EUR",
+        "BTC/EUR",
+        "DAI/EUR",
+        "DASH/EUR",
+        "EOS/EUR",
+        "ETC/EUR",
+        "ETH/EUR",
+        "LINK/EUR",
+        "LTC/EUR",
+        "QTUM/EUR",
+        "REP/EUR",
+        "WAVES/EUR",
+        "XLM/EUR",
+        "XMR/EUR",
+        "XRP/EUR",
+        "XTZ/EUR",
+        "ZEC/EUR"
+    ],
+    "pair_blacklist": [
+
+    ]
+}

requirements-common.txt

@@ -28,3 +28,6 @@ flask==1.1.1
 
 # Support for colorized terminal output
 colorama==0.4.3
+# Building config files interactively
+questionary==1.5.1
+prompt-toolkit==3.0.3

setup.py

@@ -79,6 +79,8 @@ setup(name='freqtrade',
           'sdnotify',
           'colorama',
           'jinja2',
+          'questionary',
+          'prompt-toolkit',
           # from requirements.txt
           'numpy',
           'pandas',

setup.sh

@@ -17,6 +17,14 @@ function check_installed_python() {
         exit 2
     fi
 
+    which python3.8
+    if [ $? -eq 0 ]; then
+        echo "using Python 3.8"
+        PYTHON=python3.8
+        check_installed_pip
+        return
+    fi
+
     which python3.7
     if [ $? -eq 0 ]; then
         echo "using Python 3.7"
@@ -215,27 +223,8 @@ function config_generator() {
 function config() {
 
     echo "-------------------------"
-    echo "Generating config file"
+    echo "Please use 'freqtrade new-config -c config.json' to generate a new configuration file."
     echo "-------------------------"
-    if [ -f config.json ]
-    then
-    read -p "A config file already exist, do you want to override it [y/N]? "
-    if [[ $REPLY =~ ^[Yy]$ ]]
-    then
-        config_generator
-    else
-        echo "Configuration of config.json ignored."
-    fi
-    else
-        config_generator
-    fi
-
-    echo
-    echo "-------------------------"
-    echo "Config file generated"
-    echo "-------------------------"
-    echo "Edit ./config.json to modify Pair and other configurations."
-    echo
 }
 
 function install() {

tests/commands/test_build_config.py

@@ -0,0 +1,116 @@
+from pathlib import Path
+from unittest.mock import MagicMock
+
+import pytest
+import rapidjson
+
+from freqtrade.commands.build_config_commands import (ask_user_config,
+                                                      ask_user_overwrite,
+                                                      start_new_config,
+                                                      validate_is_float,
+                                                      validate_is_int)
+from freqtrade.exceptions import OperationalException
+from tests.conftest import get_args, log_has_re
+
+
+def test_validate_is_float():
+    assert validate_is_float('2.0')
+    assert validate_is_float('2.1')
+    assert validate_is_float('0.1')
+    assert validate_is_float('-0.5')
+    assert not validate_is_float('-0.5e')
+
+
+def test_validate_is_int():
+    assert validate_is_int('2')
+    assert validate_is_int('6')
+    assert validate_is_int('-1')
+    assert validate_is_int('500')
+    assert not validate_is_int('2.0')
+    assert not validate_is_int('2.1')
+    assert not validate_is_int('-2.1')
+    assert not validate_is_int('-ee')
+
+
+@pytest.mark.parametrize('exchange', ['bittrex', 'binance', 'kraken', 'ftx'])
+def test_start_new_config(mocker, caplog, exchange):
+    wt_mock = mocker.patch.object(Path, "write_text", MagicMock())
+    mocker.patch.object(Path, "exists", MagicMock(return_value=True))
+    unlink_mock = mocker.patch.object(Path, "unlink", MagicMock())
+    mocker.patch('freqtrade.commands.build_config_commands.ask_user_overwrite', return_value=True)
+
+    sample_selections = {
+        'max_open_trades': 3,
+        'stake_currency': 'USDT',
+        'stake_amount': 100,
+        'fiat_display_currency': 'EUR',
+        'ticker_interval': '15m',
+        'dry_run': True,
+        'exchange_name': exchange,
+        'exchange_key': 'sampleKey',
+        'exchange_secret': 'Samplesecret',
+        'telegram': False,
+        'telegram_token': 'asdf1244',
+        'telegram_chat_id': '1144444',
+    }
+    mocker.patch('freqtrade.commands.build_config_commands.ask_user_config',
+                 return_value=sample_selections)
+    args = [
+        "new-config",
+        "--config",
+        "coolconfig.json"
+    ]
+    start_new_config(get_args(args))
+
+    assert log_has_re("Writing config to .*", caplog)
+    assert wt_mock.call_count == 1
+    assert unlink_mock.call_count == 1
+    result = rapidjson.loads(wt_mock.call_args_list[0][0][0],
+                             parse_mode=rapidjson.PM_COMMENTS | rapidjson.PM_TRAILING_COMMAS)
+    assert result['exchange']['name'] == exchange
+    assert result['ticker_interval'] == '15m'
+
+
+def test_start_new_config_exists(mocker, caplog):
+    mocker.patch.object(Path, "exists", MagicMock(return_value=True))
+    mocker.patch('freqtrade.commands.build_config_commands.ask_user_overwrite', return_value=False)
+    args = [
+        "new-config",
+        "--config",
+        "coolconfig.json"
+    ]
+    with pytest.raises(OperationalException, match=r"Configuration .* already exists\."):
+        start_new_config(get_args(args))
+
+
+def test_ask_user_overwrite(mocker):
+    """
+    Once https://github.com/tmbo/questionary/issues/35 is implemented, improve this test.
+    """
+    prompt_mock = mocker.patch('freqtrade.commands.build_config_commands.prompt',
+                               return_value={'overwrite': False})
+    assert not ask_user_overwrite(Path('test.json'))
+    assert prompt_mock.call_count == 1
+
+    prompt_mock.reset_mock()
+    prompt_mock = mocker.patch('freqtrade.commands.build_config_commands.prompt',
+                               return_value={'overwrite': True})
+    assert ask_user_overwrite(Path('test.json'))
+    assert prompt_mock.call_count == 1
+
+
+def test_ask_user_config(mocker):
+    """
+    Once https://github.com/tmbo/questionary/issues/35 is implemented, improve this test.
+    """
+    prompt_mock = mocker.patch('freqtrade.commands.build_config_commands.prompt',
+                               return_value={'overwrite': False})
+    answers = ask_user_config()
+    assert isinstance(answers, dict)
+    assert prompt_mock.call_count == 1
+
+    prompt_mock = mocker.patch('freqtrade.commands.build_config_commands.prompt',
+                               return_value={})
+
+    with pytest.raises(OperationalException, match=r"User interrupted interactive questions\."):
+        ask_user_config()