bug fix (#113)

* bug fix

* prepare for new version

docs/conf.py

@@ -26,7 +26,7 @@
 # The short X.Y version
 version = '0.1'
 # The full version, including alpha/beta/rc tags
-release = '0.1.12'
+release = '0.1.13'
 
 
 # -- General configuration ---------------------------------------------------

setup.py

@@ -13,11 +13,11 @@
 
 setup(name='steppy',
       packages=['steppy'],
-      version='0.1.12',
+      version='0.1.13',
       description='A lightweight, open-source, Python library for fast and reproducible experimentation',
       long_description=long_description,
       url='https://github.com/minerva-ml/steppy',
-      download_url='https://github.com/minerva-ml/steppy/archive/0.1.12.tar.gz',
+      download_url='https://github.com/minerva-ml/steppy/archive/0.1.13.tar.gz',
       author='Kamil A. Kaczmarek, Jakub Czakon',
       author_email='[email protected], [email protected]',
       keywords=['machine-learning', 'reproducibility', 'pipeline', 'data-science'],

steppy/base.py

@@ -212,7 +212,6 @@ def __init__(self,
         assert isinstance(force_fitting, bool), 'Step {} error, force_fitting must be bool, ' \
                                                 'got {} instead.'.format(self.name, type(force_fitting))
 
-        self._validate_upstream_names()
         logger.info('Initializing Step {}'.format(self.name))
 
         self.transformer = transformer
@@ -231,6 +230,7 @@ def __init__(self,
         self._prepare_experiment_directories()
         self._mode = 'train'
 
+        self._validate_upstream_names()
         logger.info('Step {} initialized'.format(self.name))
 
     @property