Fixes import, linter and comments

Author: AndreMiras

pythonforandroid/recipes/sympy/__init__.py

@@ -1,16 +1,16 @@
 
-from pythonforandroid.toolchain import PythonRecipe
+from pythonforandroid.recipe import PythonRecipe
 
 
 class SympyRecipe(PythonRecipe):
     version = '1.1.1'
     url = 'https://github.com/sympy/sympy/releases/download/sympy-{version}/sympy-{version}.tar.gz'
 
-    # depends = [('python2', 'python3crystax'), 'setuptools']
     depends = [('python2', 'python3crystax'), 'mpmath']
 
     call_hostpython_via_targetpython = True
 
     patches = ['fix_timeutils.patch', 'fix_pretty_print.patch']
 
+
 recipe = SympyRecipe()