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authorSteve Dower <steve.dower@microsoft.com>2017-02-04 15:05:40 -0800
committerSteve Dower <steve.dower@microsoft.com>2017-02-04 15:05:40 -0800
commitb2fa705fd3887c326e811c418469c784353027f4 (patch)
treeb3428f73de91453edbfd4df1a5d4a212d182eb44 /Doc/library/math.rst
parent134e58fd3aaa2e91390041e143f3f0a21a60142b (diff)
parentb53654b6dbfce8318a7d4d1cdaddca7a7fec194b (diff)
downloadcpython-b2fa705fd3887c326e811c418469c784353027f4.tar.gz
Issue #29392: Prevent crash when passing invalid arguments into msvcrt module.
Diffstat (limited to 'Doc/library/math.rst')
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diff --git a/Doc/library/math.rst b/Doc/library/math.rst
index 3fdea18cfd..da2b8cc586 100644
--- a/Doc/library/math.rst
+++ b/Doc/library/math.rst
@@ -426,6 +426,15 @@ Constants
The mathematical constant e = 2.718281..., to available precision.
+.. data:: tau
+
+ The mathematical constant τ = 6.283185..., to available precision.
+ Tau is a circle constant equal to 2π, the ratio of a circle's circumference to
+ its radius. To learn more about Tau, check out Vi Hart's video `Pi is (still)
+ Wrong <https://www.youtube.com/watch?v=jG7vhMMXagQ>`_, and start celebrating
+ `Tau day <http://tauday.com/>`_ by eating twice as much pie!
+
+ .. versionadded:: 3.6
.. data:: inf