import python/sanitizers interface

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diff --git a/library/python/sanitizers/README.md b/library/python/sanitizers/README.md
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+# Флаги включенности санитайзеров в сборке
+
+Библиотека позволяет проверить в рантайме, был ли бинарь собран с санитайзерами.
+
+Целевая область применения - тесты. Так как производительность с санитайзерами ниже, то и количество итераций в, например, стресс-тестах стоит делать ниже. Таймауты на тесты ведь одинаковые.
diff --git a/library/python/sanitizers/__init__.py b/library/python/sanitizers/__init__.py
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+from .sanitizers import asan_is_on, tsan_is_on, msan_is_on  # F401 # noqa
diff --git a/library/python/sanitizers/sanitizers.pxd b/library/python/sanitizers/sanitizers.pxd
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+from libcpp cimport bool
+
+cdef extern from "util/system/sanitizers.h" namespace "NSan" nogil:
+    bool ASanIsOn()
+    bool TSanIsOn()
+    bool MSanIsOn()
diff --git a/library/python/sanitizers/sanitizers.pyx b/library/python/sanitizers/sanitizers.pyx
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+def asan_is_on():
+    return ASanIsOn()
+
+
+def tsan_is_on():
+    return TSanIsOn()
+
+
+def msan_is_on():
+    return MSanIsOn()
diff --git a/library/python/sanitizers/ya.make b/library/python/sanitizers/ya.make
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+++ b/library/python/sanitizers/ya.make
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+PY23_LIBRARY()
+
+STYLE_PYTHON()
+
+PY_SRCS(
+    __init__.py
+    sanitizers.pyx
+)
+
+END()