Merge pull request #2303 from freqtrade/feat/hyperopt_optional_install

Optional hyperopt dependency installation

Dockerfile.pi

@@ -22,13 +22,13 @@ RUN tar -xzf /freqtrade/ta-lib-0.4.0-src.tar.gz \
 ENV LD_LIBRARY_PATH /usr/local/lib
 
 # Install berryconda
-RUN wget https://github.com/jjhelmus/berryconda/releases/download/v2.0.0/Berryconda3-2.0.0-Linux-armv7l.sh \
+RUN wget -q https://github.com/jjhelmus/berryconda/releases/download/v2.0.0/Berryconda3-2.0.0-Linux-armv7l.sh \
  && bash ./Berryconda3-2.0.0-Linux-armv7l.sh -b \
  && rm Berryconda3-2.0.0-Linux-armv7l.sh
 
 # Install dependencies
 COPY requirements-common.txt /freqtrade/
-RUN ~/berryconda3/bin/conda install -y numpy pandas scipy \
+RUN ~/berryconda3/bin/conda install -y numpy pandas \
  && ~/berryconda3/bin/pip install -r requirements-common.txt --no-cache-dir
 
 # Install and execute

docs/installation.md

@@ -99,8 +99,8 @@ sudo apt-get install build-essential git
 
 Before installing FreqTrade on a Raspberry Pi running the official Raspbian Image, make sure you have at least Python 3.6 installed. The default image only provides Python 3.5. Probably the easiest way to get a recent version of python is [miniconda](https://repo.continuum.io/miniconda/).
 
-The following assumes that miniconda3 is installed and available in your environment. Last miniconda3 installation file use python 3.4, we will update to python 3.6 on this installation.
+The following assumes that miniconda3 is installed and available in your environment. Since the last miniconda3 installation file uses python 3.4, we will update to python 3.6 on this installation.
-It's recommended to use (mini)conda for this as installation/compilation of `numpy`, `scipy` and `pandas` takes a long time.
+It's recommended to use (mini)conda for this as installation/compilation of `numpy` and `pandas` takes a long time.
 
 Additional package to install on your Raspbian, `libffi-dev` required by cryptography (from python-telegram-bot).
 
@@ -109,13 +109,17 @@ conda config --add channels rpi
 conda install python=3.6
 conda create -n freqtrade python=3.6
 conda activate freqtrade
-conda install scipy pandas numpy
+conda install pandas numpy
 
 sudo apt install libffi-dev
 python3 -m pip install -r requirements-common.txt
 python3 -m pip install -e .
 ```
 
+!!! Note
+    This does not install hyperopt dependencies. To install these, please use `python3 -m pip install -e .[hyperopt]`.
+    We do not advise to run hyperopt on a Raspberry Pi, since this is a very resource-heavy operation, which should be done on powerful machine.
+
 ### Common
 
 #### 1. Install TA-Lib
@@ -175,7 +179,6 @@ cp config.json.example config.json
 
 ``` bash
 python3 -m pip install --upgrade pip
-python3 -m pip install -r requirements.txt
 python3 -m pip install -e .
 ```
 

environment.yml

@@ -9,25 +9,26 @@ dependencies:
   - wheel
   - numpy
   - pandas
-  - scipy
   - SQLAlchemy
-  - scikit-learn
   - arrow
   - requests
   - urllib3
   - wrapt
-  - joblib
   - jsonschema
   - tabulate
   - python-rapidjson
-  - filelock
   - flask
   - python-dotenv
   - cachetools
-  - scikit-optimize
   - python-telegram-bot
   # Optional for plotting
   - plotly
+  # Optional for hyperopt
+  - scipy
+  - scikit-optimize
+  - scikit-learn
+  - filelock
+  - joblib
   # Optional for development
   - flake8
   - pytest

freqtrade/optimize/__init__.py

@@ -1,9 +1,7 @@
 import logging
 from typing import Any, Dict
 
-from filelock import FileLock, Timeout
+from freqtrade import DependencyException, constants, OperationalException
-
-from freqtrade import DependencyException, constants
 from freqtrade.state import RunMode
 from freqtrade.utils import setup_utils_configuration
 
@@ -53,8 +51,12 @@ def start_hyperopt(args: Dict[str, Any]) -> None:
     :return: None
     """
     # Import here to avoid loading hyperopt module when it's not used
-    from freqtrade.optimize.hyperopt import Hyperopt
+    try:
-
+        from filelock import FileLock, Timeout
+        from freqtrade.optimize.hyperopt import Hyperopt
+    except ImportError as e:
+        raise OperationalException(
+            f"{e}. Please ensure that the hyperopt dependencies are installed.") from e
     # Initialize configuration
     config = setup_configuration(args, RunMode.HYPEROPT)
 

requirements-common.txt

@@ -8,21 +8,15 @@ cachetools==3.1.1
 requests==2.22.0
 urllib3==1.25.5
 wrapt==1.11.2
-scikit-learn==0.21.3
-joblib==0.13.2
 jsonschema==3.0.2
 TA-Lib==0.4.17
 tabulate==0.8.3
 coinmarketcap==5.0.3
 
-# Required for hyperopt
-scikit-optimize==0.5.2
-filelock==3.0.12
-
 # find first, C search in arrays
 py_find_1st==1.1.4
 
-#Load ticker files 30% faster
+# Load ticker files 30% faster
 python-rapidjson==0.8.0
 
 # Notify systemd

requirements-dev.txt

@@ -1,6 +1,7 @@
 # Include all requirements to run the bot.
 -r requirements.txt
 -r requirements-plot.txt
+-r requirements-hyperopt.txt
 
 coveralls==1.8.2
 flake8==3.7.8

requirements-hyperopt.txt

@@ -0,0 +1,9 @@
+# Include all requirements to run the bot.
+# -r requirements.txt
+
+# Required for hyperopt
+scipy==1.3.1
+scikit-learn==0.21.3
+scikit-optimize==0.5.2
+filelock==3.0.12
+joblib==0.13.2

requirements.txt

@@ -3,4 +3,3 @@
 
 numpy==1.17.2
 pandas==0.25.1
-scipy==1.3.1

setup.py

@@ -18,6 +18,13 @@ if readme_file.is_file():
 # Requirements used for submodules
 api = ['flask']
 plot = ['plotly>=4.0']
+hyperopt = [
+    'scipy',
+    'scikit-learn',
+    'scikit-optimize',
+    'filelock',
+    'joblib',
+    ]
 
 develop = [
     'coveralls',
@@ -38,7 +45,7 @@ jupyter = [
     'ipykernel',
     ]
 
-all_extra = api + plot + develop + jupyter
+all_extra = api + plot + develop + jupyter + hyperopt
 
 setup(name='freqtrade',
       version=__version__,
@@ -62,14 +69,10 @@ setup(name='freqtrade',
           'requests',
           'urllib3',
           'wrapt',
-          'scikit-learn',
-          'joblib',
           'jsonschema',
           'TA-Lib',
           'tabulate',
           'coinmarketcap',
-          'scikit-optimize',
-          'filelock',
           'py_find_1st',
           'python-rapidjson',
           'sdnotify',
@@ -77,15 +80,14 @@ setup(name='freqtrade',
           # from requirements.txt
           'numpy',
           'pandas',
-          'scipy',
       ],
       extras_require={
           'api': api,
           'dev': all_extra,
           'plot': plot,
-          'all': all_extra,
           'jupyter': jupyter,
-
+          'hyperopt': hyperopt,
+          'all': all_extra,
       },
       include_package_data=True,
       zip_safe=False,

tests/conftest.py

@@ -1054,3 +1054,24 @@ def rpc_balance():
 def testdatadir() -> Path:
     """Return the path where testdata files are stored"""
     return (Path(__file__).parent / "testdata").resolve()
+
+
+@pytest.fixture(scope="function")
+def import_fails() -> None:
+    # Source of this test-method:
+    # https://stackoverflow.com/questions/2481511/mocking-importerror-in-python
+    import builtins
+    realimport = builtins.__import__
+
+    def mockedimport(name, *args, **kwargs):
+        if name in ["filelock"]:
+            raise ImportError(f"No module named '{name}'")
+        return realimport(name, *args, **kwargs)
+
+    builtins.__import__ = mockedimport
+
+    # Run test - then cleanup
+    yield
+
+    # restore previous importfunction
+    builtins.__import__ = realimport

tests/optimize/test_hyperopt.py

@@ -190,6 +190,24 @@ def test_hyperoptlossresolver_wrongname(mocker, default_conf, caplog) -> None:
         HyperOptLossResolver(default_conf, ).hyperopt
 
 
+def test_start_not_installed(mocker, default_conf, caplog, import_fails) -> None:
+    start_mock = MagicMock()
+    patched_configuration_load_config_file(mocker, default_conf)
+
+    mocker.patch('freqtrade.optimize.hyperopt.Hyperopt.start', start_mock)
+    patch_exchange(mocker)
+
+    args = [
+        '--config', 'config.json',
+        'hyperopt',
+        '--epochs', '5'
+    ]
+    args = get_args(args)
+
+    with pytest.raises(OperationalException, match=r"Please ensure that the hyperopt dependencies"):
+        start_hyperopt(args)
+
+
 def test_start(mocker, default_conf, caplog) -> None:
     start_mock = MagicMock()
     patched_configuration_load_config_file(mocker, default_conf)