Merge pull request #160 from l-johnston/mil_unit

Add the imperial unit mil.
yt-project · Jul 13, 2020 · 1ca658f · 1ca658f
2 parents d51595d + fe93834
commit 1ca658f
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diff --git a/unyt/_unit_lookup_table.py b/unyt/_unit_lookup_table.py
@@ -126,6 +126,7 @@
         ("degC", (1.0, dimensions.temperature, -273.15, r"^\circ\rm{C}", True)),
         ("delta_degC", (1.0, dimensions.temperature, 0, r"\Delta^\circ\rm{C}", True)),
         # Imperial and other non-metric units
+        ("mil", (1e-3 * m_per_inch, dimensions.length, 0.0, r"\rm{mil}", False)),
         ("inch", (m_per_inch, dimensions.length, 0.0, r"\rm{in}", False)),
         ("ft", (m_per_ft, dimensions.length, 0.0, r"\rm{ft}", False)),
         ("yd", (0.9144, dimensions.length, 0.0, r"\rm{yd}", False)),
@@ -434,6 +435,7 @@
         ("lx", ("lux",)),
         ("degC", ("degree_celsius", "degree_Celsius", "celcius", "celsius", "°C")),
         # Imperial and other non-metric units
+        ("mil", ("thou", "thousandth")),
         ("inch", ("in",)),
         ("ft", ("foot",)),
         ("yd", ("yard",)),

diff --git a/unyt/tests/test_unyt_array.py b/unyt/tests/test_unyt_array.py
@@ -2411,3 +2411,7 @@ def test_delta_degF():
     assert t3 + t1 == 11 * degF
     assert 1 * delta_degF + 2 * delta_degF == 3 * delta_degF
     assert 2 * delta_degF == unyt_quantity(2, "delta_degF")
+
+
+def test_mil():
+    assert_allclose_units(unyt_quantity(1, "mil"), unyt_quantity(0.001, "inch"))