add method mathMod

README.md

@@ -354,7 +354,7 @@ R.length(ObjWithoutLength()) # float('nan')
 - [ ] mapAccumRight
 - [ ] mapObjIndexed
 - [x] 0.1.2 match
-- [ ] mathMod
+- [x] mathMod
 - [x] 0.1.2 Max (`max` is a keyword in python)
 
 If R.Max(a, b)

ramda/__init__.py

@@ -54,6 +54,7 @@
 from .lte import lte
 from .map import map
 from .match import match
+from .mathMod import mathMod
 from .Max import Max
 from .Min import Min
 from .modulo import modulo

ramda/mathMod.py

@@ -0,0 +1,13 @@
+from .private._curry2 import _curry2
+from .private._isInteger import _isInteger
+
+
+def inner_mathMod(m, p):
+  if not _isInteger(m):
+    return float('nan')
+  if not _isInteger(p) or p < 1:
+    return float('nan')
+  return m % p
+
+
+mathMod = _curry2(inner_mathMod)

test/test_mathMod.py

@@ -0,0 +1,25 @@
+
+import unittest
+from math import isnan
+
+import ramda as R
+
+"""
+https://github.com/ramda/ramda/blob/master/test/mathMod.js
+"""
+
+
+class TestMathMod(unittest.TestCase):
+  def test_requires_integer_arguments(self):
+    self.assertTrue(isnan(R.mathMod('s', 3)))
+    self.assertTrue(isnan(R.mathMod(3, 's')))
+    self.assertTrue(isnan(R.mathMod(12.2, 3)))
+    self.assertTrue(isnan(R.mathMod(3, 12.2)))
+
+  def test_computes_the_true_modulo_function(self):
+    self.assertEqual(3, R.mathMod(-17, 5))
+    self.assertEqual(2, R.mathMod(17, 5))
+    self.assertEqual(3, R.mathMod(15, 12))
+
+if __name__ == '__main__':
+  unittest.main()