Intermediate changes

commit_hash:e2da3ad430fabaa84a74178b1f2103b09ac69ae7

27 files changed, 202 insertions, 131 deletions

diff --git a/library/cpp/neh/http_common.cpp b/library/cpp/neh/http_common.cpp
index 7ae466c31a..23ed6a2889 100644
--- a/library/cpp/neh/http_common.cpp
+++ b/library/cpp/neh/http_common.cpp
@@ -231,5 +231,32 @@ namespace NNeh {
             return NeedGetRequestFor(scheme) || NeedPostRequestFor(scheme);
         }
     }
+
+    HttpCodes GetHttpCode(const IRequest::TResponseError& error) {
+        switch (error) {
+            case IRequest::TResponseError::BadRequest:
+                return HttpCodes::HTTP_BAD_REQUEST;
+            case IRequest::TResponseError::Forbidden:
+                return HttpCodes::HTTP_FORBIDDEN;
+            case IRequest::TResponseError::NotExistService:
+                return HttpCodes::HTTP_NOT_FOUND;
+            case IRequest::TResponseError::TooManyRequests:
+                return HttpCodes::HTTP_TOO_MANY_REQUESTS;
+            case IRequest::TResponseError::InternalError:
+                return HttpCodes::HTTP_INTERNAL_SERVER_ERROR;
+            case IRequest::TResponseError::NotImplemented:
+                return HttpCodes::HTTP_NOT_IMPLEMENTED;
+            case IRequest::TResponseError::BadGateway:
+                return HttpCodes::HTTP_BAD_GATEWAY;
+            case IRequest::TResponseError::ServiceUnavailable:
+                return HttpCodes::HTTP_SERVICE_UNAVAILABLE;
+            case IRequest::TResponseError::BandwidthLimitExceeded:
+                return HttpCodes::HTTP_BANDWIDTH_LIMIT_EXCEEDED;
+            case IRequest::TResponseError::MaxResponseError:
+                ythrow yexception() << TStringBuf("unknow type of error");
+
+            Y_UNREACHABLE();
+        }
+    }
 }
 
diff --git a/library/cpp/neh/http_common.h b/library/cpp/neh/http_common.h
index 69659ba907..acefe80c37 100644
--- a/library/cpp/neh/http_common.h
+++ b/library/cpp/neh/http_common.h
@@ -7,6 +7,7 @@
 #include <util/stream/mem.h>
 #include <util/stream/output.h>
 #include <library/cpp/deprecated/atomic/atomic.h>
+#include <library/cpp/http/misc/httpcodes.h>
 
 #include "location.h"
 #include "neh.h"
@@ -298,4 +299,6 @@ namespace NNeh {
 
         bool IsHttpScheme(TStringBuf scheme);
     }
+
+    HttpCodes GetHttpCode(const IRequest::TResponseError&);
 }
diff --git a/library/cpp/neh/https.cpp b/library/cpp/neh/https.cpp
index f1a2ec9e7e..ece7d3cf2d 100644
--- a/library/cpp/neh/https.cpp
+++ b/library/cpp/neh/https.cpp
@@ -1394,37 +1394,7 @@ namespace NNeh {
                         return;
                     }
 
-                    switch (*error) {
-                        case IRequest::TResponseError::BadRequest:
-                            os << HttpCodeStrEx(HttpCodes::HTTP_BAD_REQUEST);
-                            break;
-                        case IRequest::TResponseError::Forbidden:
-                            os << HttpCodeStrEx(HttpCodes::HTTP_FORBIDDEN);
-                            break;
-                        case IRequest::TResponseError::NotExistService:
-                            os << HttpCodeStrEx(HttpCodes::HTTP_NOT_FOUND);
-                            break;
-                        case IRequest::TResponseError::TooManyRequests:
-                            os << HttpCodeStrEx(HttpCodes::HTTP_TOO_MANY_REQUESTS);
-                            break;
-                        case IRequest::TResponseError::InternalError:
-                            os << HttpCodeStrEx(HttpCodes::HTTP_INTERNAL_SERVER_ERROR);
-                            break;
-                        case IRequest::TResponseError::NotImplemented:
-                            os << HttpCodeStrEx(HttpCodes::HTTP_NOT_IMPLEMENTED);
-                            break;
-                        case IRequest::TResponseError::BadGateway:
-                            os << HttpCodeStrEx(HttpCodes::HTTP_BAD_GATEWAY);
-                            break;
-                        case IRequest::TResponseError::ServiceUnavailable:
-                            os << HttpCodeStrEx(HttpCodes::HTTP_SERVICE_UNAVAILABLE);
-                            break;
-                        case IRequest::TResponseError::BandwidthLimitExceeded:
-                            os << HttpCodeStrEx(HttpCodes::HTTP_BANDWIDTH_LIMIT_EXCEEDED);
-                            break;
-                        case IRequest::TResponseError::MaxResponseError:
-                            ythrow yexception() << TStringBuf("unknow type of error");
-                    }
+                    os << HttpCodeStrEx(GetHttpCode(*error));
                 }
 
             public:
diff --git a/yql/essentials/tests/common/test_framework/yql_utils.py b/yql/essentials/tests/common/test_framework/yql_utils.py
index 8314349358..2136729be9 100644
--- a/yql/essentials/tests/common/test_framework/yql_utils.py
+++ b/yql/essentials/tests/common/test_framework/yql_utils.py
@@ -52,7 +52,7 @@ def do_custom_query_check(res, sql_query):
 
 def do_custom_error_check(res, sql_query):
     err_string = None
-    custom_error = re.search(r"/\* custom error:(.*)\*/", sql_query)
+    custom_error = re.search(r"/\* custom error:(.*?)\*/", sql_query, re.DOTALL)
     if custom_error:
         err_string = custom_error.group(1).strip()
     assert err_string, 'Expected custom error check in test.\nTest error: %s' % res.std_err
diff --git a/yql/essentials/udfs/common/python/bindings/py_callable_ut.cpp b/yql/essentials/udfs/common/python/bindings/py_callable_ut.cpp
index 1c58d7b371..36cc13a1da 100644
--- a/yql/essentials/udfs/common/python/bindings/py_callable_ut.cpp
+++ b/yql/essentials/udfs/common/python/bindings/py_callable_ut.cpp
@@ -1,4 +1,4 @@
-#include "ut3/py_test_engine.h"
+#include "py_test_engine.h"
 
 #include <library/cpp/testing/unittest/registar.h>
 
diff --git a/yql/essentials/udfs/common/python/bindings/py_cast.cpp b/yql/essentials/udfs/common/python/bindings/py_cast.cpp
index 078239962e..ac44ac42e5 100644
--- a/yql/essentials/udfs/common/python/bindings/py_cast.cpp
+++ b/yql/essentials/udfs/common/python/bindings/py_cast.cpp
@@ -22,6 +22,7 @@
 
 #include <library/cpp/containers/stack_vector/stack_vec.h>
 
+#include <util/generic/scope.h>
 #include <util/string/join.h>
 #include <util/string/builder.h>
 
@@ -252,7 +253,7 @@
     template <> \
     bool TryPyCast(PyObject* value, Type& result) { \
         if (PyUnicode_Check(value)) { \
-            const TPyObjectPtr utf8(PyUnicode_AsUTF8String(value)); \
+            const TPyObjectPtr utf8(AsUtf8StringOrThrow(value)); \
             char* str = nullptr; \
             Py_ssize_t size = 0; \
             int rc = PyBytes_AsStringAndSize(utf8.Get(), &str, &size); \
@@ -279,6 +280,22 @@ namespace NPython {
 
 using namespace NKikimr;
 
+namespace {
+
+NPython::TPyObjectPtr AsUtf8StringOrThrow(PyObject* obj) {
+    auto* utf8String = PyUnicode_AsUTF8String(obj);
+    if (!utf8String) {
+        Y_ENSURE(PyErr_Occurred());
+        Y_DEFER {
+            PyErr_Clear();
+        };
+        throw yexception() << "Failed to convert the string to UTF-8 format. Original message is:\n" << GetLastErrorAsString() << "\n";
+    }
+    return NPython::TPyObjectPtr(utf8String);
+}
+
+} // namespace
+
 inline void ThrowCastTypeException(PyObject* value, TStringBuf toType) {
     throw yexception() << "Can't cast object '" << Py_TYPE(value)->tp_name << "' to " << toType
                        << "; Object repr: " << PyObjectRepr(value);
@@ -548,7 +565,7 @@ NUdf::TUnboxedValue FromPyData(
     case NUdf::TDataType<NUdf::TUtf8>::Id:
     case NUdf::TDataType<NUdf::TJson>::Id:
         if (PyUnicode_Check(value)) {
-            const TPyObjectPtr uif8(PyUnicode_AsUTF8String(value));
+            const TPyObjectPtr uif8(AsUtf8StringOrThrow(value));
             return ctx->ValueBuilder->NewString(PyCast<NUdf::TStringRef>(uif8.Get()));
         }
         throw yexception() << "Python object " << PyObjectRepr(value) << " has invalid value for unicode";
@@ -557,7 +574,7 @@ NUdf::TUnboxedValue FromPyData(
     case NUdf::TDataType<NUdf::TJson>::Id:
     case NUdf::TDataType<NUdf::TUtf8>::Id: {
         if (PyUnicode_Check(value)) {
-            const TPyObjectPtr utf8(PyUnicode_AsUTF8String(value));
+            const TPyObjectPtr utf8(AsUtf8StringOrThrow(value));
             return ctx->ValueBuilder->NewString(PyCast<NUdf::TStringRef>(utf8.Get()));
         }
 
diff --git a/yql/essentials/udfs/common/python/bindings/py_cast_ut.cpp b/yql/essentials/udfs/common/python/bindings/py_cast_ut.cpp
index 47f65ab6fa..d4ee90278c 100644
--- a/yql/essentials/udfs/common/python/bindings/py_cast_ut.cpp
+++ b/yql/essentials/udfs/common/python/bindings/py_cast_ut.cpp
@@ -1,9 +1,39 @@
-#include "ut3/py_test_engine.h"
+#include "py_test_engine.h"
 
 #include <library/cpp/testing/unittest/registar.h>
+#include <util/string/strip.h>
 
 using namespace NPython;
 
+namespace {
+template <typename TType>
+void TestBadUtf8Encode() {
+#if PY_MAJOR_VERSION == 2
+    // In Python 2, strings can encode single surrogate pairs, so this issue does not occur there.
+    return;
+#endif // PY_MAJOR_VERSION == 2
+
+    TPythonTestEngine engine;
+
+    constexpr char programToRun[] = R"(
+def Test():
+    return "\uDC00"
+)";
+    constexpr char expectedError[] = R"(
+Failed to convert the string to UTF-8 format. Original message is:
+UnicodeEncodeError: 'utf-8' codec can't encode character '\udc00' in position 0: surrogates not allowed
+)";
+
+    UNIT_ASSERT_EXCEPTION_CONTAINS(
+            engine.ToMiniKQL<TType>(
+                 StripString(TString(programToRun)),
+                [](const NUdf::TUnboxedValuePod& value) {
+                    Y_UNUSED(value);
+                }),
+            yexception, StripString(TString(expectedError)));
+}
+} // namespace
+
 Y_UNIT_TEST_SUITE(TPyCastTest) {
     Y_UNIT_TEST(FromPyStrToInt) {
         TPythonTestEngine engine;
@@ -87,4 +117,11 @@ Y_UNIT_TEST_SUITE(TPyCastTest) {
             yexception, "Cast error object " RETVAL " to Long");
     }
 
-}
+    Y_UNIT_TEST(BadFromPythonUtf8) {
+        TestBadUtf8Encode<NUdf::TUtf8>();
+    }
+
+    Y_UNIT_TEST(BadFromPythonJson) {
+        TestBadUtf8Encode<NUdf::TJson>();
+    }
+} // Y_UNIT_TEST_SUITE(TPyCastTest)
diff --git a/yql/essentials/udfs/common/python/bindings/py_decimal_ut.cpp b/yql/essentials/udfs/common/python/bindings/py_decimal_ut.cpp
index 8388c110f3..3f0298013a 100644
--- a/yql/essentials/udfs/common/python/bindings/py_decimal_ut.cpp
+++ b/yql/essentials/udfs/common/python/bindings/py_decimal_ut.cpp
@@ -1,4 +1,4 @@
-#include "ut3/py_test_engine.h"
+#include "py_test_engine.h"
 
 #include <library/cpp/testing/unittest/registar.h>
 
diff --git a/yql/essentials/udfs/common/python/bindings/py_dict_ut.cpp b/yql/essentials/udfs/common/python/bindings/py_dict_ut.cpp
index 9ac9627ebb..edb3d36e8c 100644
--- a/yql/essentials/udfs/common/python/bindings/py_dict_ut.cpp
+++ b/yql/essentials/udfs/common/python/bindings/py_dict_ut.cpp
@@ -1,4 +1,4 @@
-#include "ut3/py_test_engine.h"
+#include "py_test_engine.h"
 
 #include <yql/essentials/public/udf/udf_ut_helpers.h>
 
diff --git a/yql/essentials/udfs/common/python/bindings/py_list_ut.cpp b/yql/essentials/udfs/common/python/bindings/py_list_ut.cpp
index f16165fc54..b2e9a640d4 100644
--- a/yql/essentials/udfs/common/python/bindings/py_list_ut.cpp
+++ b/yql/essentials/udfs/common/python/bindings/py_list_ut.cpp
@@ -1,4 +1,4 @@
-#include "ut3/py_test_engine.h"
+#include "py_test_engine.h"
 
 #include <yql/essentials/public/udf/udf_ut_helpers.h>
 
diff --git a/yql/essentials/udfs/common/python/bindings/py_number_ut.cpp b/yql/essentials/udfs/common/python/bindings/py_number_ut.cpp
index c55e25891d..35c94d5e8e 100644
--- a/yql/essentials/udfs/common/python/bindings/py_number_ut.cpp
+++ b/yql/essentials/udfs/common/python/bindings/py_number_ut.cpp
@@ -1,4 +1,4 @@
-#include "ut3/py_test_engine.h"
+#include "py_test_engine.h"
 
 #include <library/cpp/testing/unittest/registar.h>
 
diff --git a/yql/essentials/udfs/common/python/bindings/py_optional_ut.cpp b/yql/essentials/udfs/common/python/bindings/py_optional_ut.cpp
index d13ea65da6..4cc45f1184 100644
--- a/yql/essentials/udfs/common/python/bindings/py_optional_ut.cpp
+++ b/yql/essentials/udfs/common/python/bindings/py_optional_ut.cpp
@@ -1,4 +1,4 @@
-#include "ut3/py_test_engine.h"
+#include "py_test_engine.h"
 
 #include <library/cpp/testing/unittest/registar.h>
 
diff --git a/yql/essentials/udfs/common/python/bindings/py_resource_ut.cpp b/yql/essentials/udfs/common/python/bindings/py_resource_ut.cpp
index aaa9899c4f..25b43cbf6a 100644
--- a/yql/essentials/udfs/common/python/bindings/py_resource_ut.cpp
+++ b/yql/essentials/udfs/common/python/bindings/py_resource_ut.cpp
@@ -1,4 +1,4 @@
-#include "ut3/py_test_engine.h"
+#include "py_test_engine.h"
 
 #include <library/cpp/testing/unittest/registar.h>
 
diff --git a/yql/essentials/udfs/common/python/bindings/py_stream_ut.cpp b/yql/essentials/udfs/common/python/bindings/py_stream_ut.cpp
index 4a24dd1a13..4a36f7b8f3 100644
--- a/yql/essentials/udfs/common/python/bindings/py_stream_ut.cpp
+++ b/yql/essentials/udfs/common/python/bindings/py_stream_ut.cpp
@@ -1,4 +1,4 @@
-#include "ut3/py_test_engine.h"
+#include "py_test_engine.h"
 
 #include <library/cpp/testing/unittest/registar.h>
 
diff --git a/yql/essentials/udfs/common/python/bindings/py_string_ut.cpp b/yql/essentials/udfs/common/python/bindings/py_string_ut.cpp
index 444b7b0c5b..b1f5a13786 100644
--- a/yql/essentials/udfs/common/python/bindings/py_string_ut.cpp
+++ b/yql/essentials/udfs/common/python/bindings/py_string_ut.cpp
@@ -1,4 +1,4 @@
-#include "ut3/py_test_engine.h"
+#include "py_test_engine.h"
 
 #include <library/cpp/testing/unittest/registar.h>
 
diff --git a/yql/essentials/udfs/common/python/bindings/py_struct_ut.cpp b/yql/essentials/udfs/common/python/bindings/py_struct_ut.cpp
index a97507f549..9b232d99a3 100644
--- a/yql/essentials/udfs/common/python/bindings/py_struct_ut.cpp
+++ b/yql/essentials/udfs/common/python/bindings/py_struct_ut.cpp
@@ -1,4 +1,4 @@
-#include "ut3/py_test_engine.h"
+#include "py_test_engine.h"
 
 #include <library/cpp/testing/unittest/registar.h>
 
diff --git a/yql/essentials/udfs/common/python/bindings/ut3/py_test_engine.h b/yql/essentials/udfs/common/python/bindings/py_test_engine.h
index a36e19fa32..c86febf779 100644
--- a/yql/essentials/udfs/common/python/bindings/ut3/py_test_engine.h
+++ b/yql/essentials/udfs/common/python/bindings/py_test_engine.h
@@ -27,6 +27,8 @@ struct TPyInitializer {
         PrepareYqlModule();
         Py_Initialize();
         InitYqlModule(NYql::NUdf::EPythonFlavor::Arcadia);
+        const auto rc = PyRun_SimpleString(NYql::NUdf::STANDART_STREAM_PROXY_INJECTION_SCRIPT);
+        Y_ENSURE(rc >= 0, "Can't setup module");
     }
     ~TPyInitializer() {
         TermYqlModule();
diff --git a/yql/essentials/udfs/common/python/bindings/py_tuple_ut.cpp b/yql/essentials/udfs/common/python/bindings/py_tuple_ut.cpp
index a6b9b6cc3e..f465f0ebb6 100644
--- a/yql/essentials/udfs/common/python/bindings/py_tuple_ut.cpp
+++ b/yql/essentials/udfs/common/python/bindings/py_tuple_ut.cpp
@@ -1,4 +1,4 @@
-#include "ut3/py_test_engine.h"
+#include "py_test_engine.h"
 
 #include <library/cpp/testing/unittest/registar.h>
 
diff --git a/yql/essentials/udfs/common/python/bindings/py_tzdate_ut.cpp b/yql/essentials/udfs/common/python/bindings/py_tzdate_ut.cpp
index e9f5971c78..08b6b78b16 100644
--- a/yql/essentials/udfs/common/python/bindings/py_tzdate_ut.cpp
+++ b/yql/essentials/udfs/common/python/bindings/py_tzdate_ut.cpp
@@ -1,5 +1,5 @@
 #include "py_variant.h"
-#include "ut3/py_test_engine.h"
+#include "py_test_engine.h"
 #include <yql/essentials/minikql/mkql_type_ops.h>
 
 #include <library/cpp/testing/unittest/registar.h>
diff --git a/yql/essentials/udfs/common/python/bindings/py_variant_ut.cpp b/yql/essentials/udfs/common/python/bindings/py_variant_ut.cpp
index 77ab9bc6e8..d792449d82 100644
--- a/yql/essentials/udfs/common/python/bindings/py_variant_ut.cpp
+++ b/yql/essentials/udfs/common/python/bindings/py_variant_ut.cpp
@@ -1,5 +1,5 @@
 #include "py_variant.h"
-#include "ut3/py_test_engine.h"
+#include "py_test_engine.h"
 
 #include <library/cpp/testing/unittest/registar.h>
 
diff --git a/yql/essentials/udfs/common/python/bindings/py_void_ut.cpp b/yql/essentials/udfs/common/python/bindings/py_void_ut.cpp
index 7fbeca2043..e6e8a72768 100644
--- a/yql/essentials/udfs/common/python/bindings/py_void_ut.cpp
+++ b/yql/essentials/udfs/common/python/bindings/py_void_ut.cpp
@@ -1,4 +1,4 @@
-#include "ut3/py_test_engine.h"
+#include "py_test_engine.h"
 
 #include <library/cpp/testing/unittest/registar.h>
 
diff --git a/yql/essentials/udfs/common/python/bindings/ut2/ya.make b/yql/essentials/udfs/common/python/bindings/ut2/ya.make
new file mode 100644
index 0000000000..b289e188bb
--- /dev/null
+++ b/yql/essentials/udfs/common/python/bindings/ut2/ya.make
@@ -0,0 +1,9 @@
+IF (OS_LINUX)
+    IF (NOT WITH_VALGRIND)
+        UNITTEST_FOR(yql/essentials/udfs/common/python/bindings)
+
+        INCLUDE(../ya.make.test.inc)
+        USE_PYTHON2()
+        END()
+    ENDIF()
+ENDIF()
diff --git a/yql/essentials/udfs/common/python/bindings/ut3/ya.make b/yql/essentials/udfs/common/python/bindings/ut3/ya.make
index cfce3cb9be..3a3c52dfbf 100644
--- a/yql/essentials/udfs/common/python/bindings/ut3/ya.make
+++ b/yql/essentials/udfs/common/python/bindings/ut3/ya.make
@@ -2,36 +2,11 @@ IF (OS_LINUX)
     IF (NOT WITH_VALGRIND)
         UNITTEST_FOR(yql/essentials/udfs/common/python/bindings)
 
-        SRCS(
-            py_callable_ut.cpp
-            py_cast_ut.cpp
-            py_dict_ut.cpp
-            py_list_ut.cpp
-            py_decimal_ut.cpp
-            py_number_ut.cpp
-            py_optional_ut.cpp
-            py_resource_ut.cpp
-            py_stream_ut.cpp
-            py_string_ut.cpp
-            py_struct_ut.cpp
-            py_tuple_ut.cpp
-            py_tzdate_ut.cpp
-            py_utils_ut.cpp
-            py_variant_ut.cpp
-            py_void_ut.cpp
-        )
-
-        USE_PYTHON3()
-
+        INCLUDE(../ya.make.test.inc)
         PEERDIR(
             library/python/type_info
-            yql/essentials/minikql/computation/llvm16
-            yql/essentials/public/udf/service/exception_policy
-            yql/essentials/sql/pg_dummy
         )
-
-        YQL_LAST_ABI_VERSION()
-
+        USE_PYTHON3()
         END()
     ENDIF()
 ENDIF()
diff --git a/yql/essentials/udfs/common/python/bindings/ya.make b/yql/essentials/udfs/common/python/bindings/ya.make
index 83380ce4c4..aea3e54717 100644
--- a/yql/essentials/udfs/common/python/bindings/ya.make
+++ b/yql/essentials/udfs/common/python/bindings/ya.make
@@ -51,6 +51,7 @@ END()
 
 IF (NOT EXPORT_CMAKE)
     RECURSE_FOR_TESTS(
+        ut2
         ut3
     )
 ENDIF()
diff --git a/yql/essentials/udfs/common/python/bindings/ya.make.test.inc b/yql/essentials/udfs/common/python/bindings/ya.make.test.inc
new file mode 100644
index 0000000000..67803ad18f
--- /dev/null
+++ b/yql/essentials/udfs/common/python/bindings/ya.make.test.inc
@@ -0,0 +1,27 @@
+SRCS(
+    py_callable_ut.cpp
+    py_cast_ut.cpp
+    py_dict_ut.cpp
+    py_list_ut.cpp
+    py_decimal_ut.cpp
+    py_number_ut.cpp
+    py_optional_ut.cpp
+    py_resource_ut.cpp
+    py_stream_ut.cpp
+    py_string_ut.cpp
+    py_struct_ut.cpp
+    py_tuple_ut.cpp
+    py_tzdate_ut.cpp
+    py_utils_ut.cpp
+    py_variant_ut.cpp
+    py_void_ut.cpp
+)
+
+PEERDIR(
+    yql/essentials/minikql/computation/llvm16
+    yql/essentials/public/udf/service/exception_policy
+    yql/essentials/sql/pg_dummy
+    yql/essentials/udfs/common/python/python_udf
+)
+
+YQL_LAST_ABI_VERSION()
diff --git a/yql/essentials/udfs/common/python/python_udf/python_udf.cpp b/yql/essentials/udfs/common/python/python_udf/python_udf.cpp
index b1739a1775..1007c75edc 100644
--- a/yql/essentials/udfs/common/python/python_udf/python_udf.cpp
+++ b/yql/essentials/udfs/common/python/python_udf/python_udf.cpp
@@ -59,59 +59,7 @@ public:
 
         InitYqlModule(pythonFlavor, standalone);
 
-        const auto rc = PyRun_SimpleString(R"(
-# numpy on import may find installed openblas library and load it,
-# which in turn causes it to start CPUCOUNT threads
-# with approx. 40Mb memory reserved for each thread;
-#
-# See more detailed explanation here: https://st.yandex-team.ru/STATLIBS-1715#5bfc68ecbbc039001cec572a
-#
-# Thus, we reduce negative effects as much as possible
-import os
-os.environ['OPENBLAS_NUM_THREADS'] = '1'
-
-
-# Following part allows us later to format tracebacks via sys.excepthook
-# in thread-safe manner
-import sys
-import threading
-if sys.version_info >= (3, 0):
-    from io import StringIO, TextIOWrapper as SysStderrType
-else:
-    from cStringIO import StringIO
-    SysStderrType = file
-
-class StderrLocal(threading.local):
-
-    def __init__(self):
-        self.is_real_mode = True
-        self.buffer = StringIO()
-
-
-class StderrProxy(object):
-    def __init__(self, stderr):
-        self._stderr = stderr
-        self._tls = StderrLocal()
-
-    def _toggle_real_mode(self):
-        self._tls.is_real_mode = not self._tls.is_real_mode
-        if not self._tls.is_real_mode:
-            self._tls.buffer.clear()
-
-    def _get_value(self):
-        assert not self._tls.is_real_mode
-        return self._tls.buffer.getvalue()
-
-    def __getattr__(self, attr):
-        target = self._stderr
-        if not self._tls.is_real_mode:
-            target = self._tls.buffer
-
-        return getattr(target, attr)
-
-if isinstance(sys.stderr, SysStderrType):
-    sys.stderr = StderrProxy(sys.stderr)
-)");
+        const auto rc = PyRun_SimpleString(STANDART_STREAM_PROXY_INJECTION_SCRIPT);
         Y_ABORT_UNLESS(rc >= 0, "Can't setup module");
 
         if (pythonFlavor == EPythonFlavor::Arcadia) {
diff --git a/yql/essentials/udfs/common/python/python_udf/python_udf.h b/yql/essentials/udfs/common/python/python_udf/python_udf.h
index 16d7da096d..83b3bb86e6 100644
--- a/yql/essentials/udfs/common/python/python_udf/python_udf.h
+++ b/yql/essentials/udfs/common/python/python_udf/python_udf.h
@@ -5,6 +5,61 @@
 namespace NYql {
 namespace NUdf {
 
+inline constexpr char STANDART_STREAM_PROXY_INJECTION_SCRIPT[] =
+R"(
+# numpy on import may find installed openblas library and load it,
+# which in turn causes it to start CPUCOUNT threads
+# with approx. 40Mb memory reserved for each thread;
+#
+# See more detailed explanation here: https://st.yandex-team.ru/STATLIBS-1715#5bfc68ecbbc039001cec572a
+#
+# Thus, we reduce negative effects as much as possible
+import os
+os.environ['OPENBLAS_NUM_THREADS'] = '1'
+
+
+# Following part allows us later to format tracebacks via sys.excepthook
+# in thread-safe manner
+import sys
+import threading
+if sys.version_info >= (3, 0):
+    from io import StringIO, TextIOWrapper as SysStderrType
+else:
+    from cStringIO import StringIO
+    SysStderrType = file
+
+class StderrLocal(threading.local):
+
+    def __init__(self):
+        self.is_real_mode = True
+        self.buffer = StringIO()
+
+
+class StderrProxy(object):
+    def __init__(self, stderr):
+        self._stderr = stderr
+        self._tls = StderrLocal()
+
+    def _toggle_real_mode(self):
+        self._tls.is_real_mode = not self._tls.is_real_mode
+        if not self._tls.is_real_mode:
+            self._tls.buffer.clear()
+
+    def _get_value(self):
+        assert not self._tls.is_real_mode
+        return self._tls.buffer.getvalue()
+
+    def __getattr__(self, attr):
+        target = self._stderr
+        if not self._tls.is_real_mode:
+            target = self._tls.buffer
+
+        return getattr(target, attr)
+
+if isinstance(sys.stderr, SysStderrType):
+    sys.stderr = StderrProxy(sys.stderr)
+)";
+
 enum class EPythonFlavor {
     System,
     Arcadia,