→ anki-sin-cos/

anki-sin-cos/anki-sin-cos-table.py

@@ -0,0 +1,30 @@
+#!/usr/bin/env python3
+from collections import OrderedDict
+from functools import reduce
+
+from sympy import latex, simplify
+from sympy import pi, sin, cos, tan
+
+
+def anki_latex(e):
+    """Format SymPy expression as Anki LaTeX"""
+    return "[$$]" + latex(e) + "[/$$]"
+
+
+def as_csv(*values):
+    return reduce(lambda a, b: a + ";" + b, values)
+
+
+def deduplicate(iterable):
+    return list(OrderedDict.fromkeys(iterable))
+
+
+xs = sorted(deduplicate(map(simplify,
+                            [i * pi / 4 for i in range(-16, 16)]
+                            + [i * pi / 6 for i in range(-24, 24)])))
+
+for x in xs:
+    for f in [sin, cos, tan]:
+        front = "What is " + anki_latex(f(x, evaluate=False)) + "?"
+        back = anki_latex(f(x))
+        print(as_csv(front, back))