Clean code

.github/workflows/tests.yml

@@ -26,7 +26,7 @@ jobs:
           # stop the build if there are Python syntax errors or undefined names
           flake8 lingam --count --select=E9,F63,F7,F82 --show-source --statistics
           # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
-          flake8 lingam --count --exit-zero --ignore=E203,E741, --max-complexity=10 --max-line-length=127 --statistics
+          flake8 lingam --count --exit-zero --ignore=E203,E741,C901 --max-line-length=127 --statistics
       - name: Test with pytest
         run: |
           pytest -v --cov=lingam --cov-report=term-missing

CONTRIBUTING.md

@@ -25,7 +25,7 @@ In addition, we add the following guidelines:
 Coding style is checked with flake8.
 
 ``` sh
-flake8 lingam --count --ignore=E203,E741 --max-complexity=10 --max-line-length=127 --statistics
+flake8 lingam --count --ignore=E203,E741,C901 --max-line-length=127 --statistics
 ```
 
 ## Documentation

lingam/bottom_up_parce_lingam.py

@@ -55,9 +55,11 @@ def __init__(
             * ``1`` : :math:`x_i` has a directed path to :math:`x_j`
             * ``-1`` : No prior knowledge is available to know if either of the two cases above (0 or 1) is true.
         independence : {'hsic', 'fcorr'}, optional (default='hsic')
-            Methods to determine independence. If 'hsic' is set, test for independence by HSIC. If 'fcorr' is set, independence is determined by F-correlation.
+            Methods to determine independence. If 'hsic' is set, test for independence by HSIC.
+            If 'fcorr' is set, independence is determined by F-correlation.
         ind_corr : float, optional (default=0.5)
-            The threshold value for determining independence by F-correlation; independence is determined when the value of F-correlation is below this threshold value.
+            The threshold value for determining independence by F-correlation;
+            independence is determined when the value of F-correlation is below this threshold value.
         """
         # Check parameters
         if regressor is not None:

lingam/camuv.py

@@ -36,9 +36,11 @@ def __init__(
         num_explanatory_vals : int, optional (default=2)
             Maximum number of explanatory variables.
         independence : {'hsic', 'fcorr'}, optional (default='hsic')
-            Methods to determine independence. If 'hsic' is set, test for independence by HSIC. If 'fcorr' is set, independence is determined by F-correlation.
+            Methods to determine independence. If 'hsic' is set, test for independence by HSIC.
+            If 'fcorr' is set, independence is determined by F-correlation.
         ind_corr : float, optional (default=0.5)
-            The threshold value for determining independence by F-correlation; independence is determined when the value of F-correlation is below this threshold value.
+            The threshold value for determining independence by F-correlation;
+            independence is determined when the value of F-correlation is below this threshold value.
         """
 
         # Check parameters