Python 3.12

.github/workflows/general-ci.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.7,'3.11']
+        python-version: [3.7,'3.12']
         simplify: [0,1,autoopt]
 
     steps:

dace/codegen/control_flow.py

@@ -30,7 +30,7 @@
 
           x < 5
          /------>[s2]--------\\
-    [s1] \                    ->[s5]
+    [s1] \\                   ->[s5]
           ------>[s3]->[s4]--/   
           x >= 5
 

dace/codegen/cppunparse.py

@@ -87,6 +87,21 @@
 from dace import dtypes
 from dace.codegen.tools import type_inference
 
+
+if sys.version_info < (3, 8):
+    BytesConstant = ast.Bytes
+    EllipsisConstant = ast.Ellipsis
+    NameConstant = ast.NameConstant
+    NumConstant = ast.Num
+    StrConstant = ast.Str
+else:
+    BytesConstant = ast.Constant
+    EllipsisConstant = ast.Constant
+    NameConstant = ast.Constant
+    NumConstant = ast.Constant
+    StrConstant = ast.Constant
+
+
 # Large float and imaginary literals get turned into infinities in the AST.
 # We unparse those infinities to INFSTR.
 INFSTR = "1e" + repr(sys.float_info.max_10_exp + 1)
@@ -574,7 +589,7 @@ def _generic_FunctionDef(self, t, is_async=False):
             self.write('/* async */ ')
 
         if getattr(t, "returns", False):
-            if isinstance(t.returns, ast.NameConstant):
+            if isinstance(t.returns, NameConstant):
                 if t.returns.value is None:
                     self.write('void')
                 else:
@@ -729,25 +744,26 @@ def _Repr(self, t):
         raise NotImplementedError('Invalid C++')
 
     def _Num(self, t):
-        repr_n = repr(t.n)
+        t_n = t.value if sys.version_info >= (3, 8) else t.n
+        repr_n = repr(t_n)
         # For complex values, use DTYPE_TO_TYPECLASS dictionary
-        if isinstance(t.n, complex):
+        if isinstance(t_n, complex):
             dtype = dtypes.DTYPE_TO_TYPECLASS[complex]
 
         # Handle large integer values
-        if isinstance(t.n, int):
-            bits = t.n.bit_length()
+        if isinstance(t_n, int):
+            bits = t_n.bit_length()
             if bits == 32:  # Integer, potentially unsigned
-                if t.n >= 0:  # unsigned
+                if t_n >= 0:  # unsigned
                     repr_n += 'U'
                 else:  # signed, 64-bit
                     repr_n += 'LL'
             elif 32 < bits <= 63:
                 repr_n += 'LL'
-            elif bits == 64 and t.n >= 0:
+            elif bits == 64 and t_n >= 0:
                 repr_n += 'ULL'
             elif bits >= 64:
-                warnings.warn(f'Value wider than 64 bits encountered in expression ({t.n}), emitting as-is')
+                warnings.warn(f'Value wider than 64 bits encountered in expression ({t_n}), emitting as-is')
 
         if repr_n.endswith("j"):
             self.write("%s(0, %s)" % (dtype, repr_n.replace("inf", INFSTR)[:-1]))
@@ -898,13 +914,13 @@ def _BinOp(self, t):
             self.write(")")
         # Special cases for powers
         elif t.op.__class__.__name__ == 'Pow':
-            if isinstance(t.right, (ast.Num, ast.Constant, ast.UnaryOp)):
+            if isinstance(t.right, (NumConstant, ast.Constant, ast.UnaryOp)):
                 power = None
-                if isinstance(t.right, (ast.Num, ast.Constant)):
-                    power = t.right.n
+                if isinstance(t.right, (NumConstant, ast.Constant)):
+                    power = t.right.value if sys.version_info >= (3, 8) else t.right.n
                 elif isinstance(t.right, ast.UnaryOp) and isinstance(t.right.op, ast.USub):
-                    if isinstance(t.right.operand, (ast.Num, ast.Constant)):
-                        power = -t.right.operand.n
+                    if isinstance(t.right.operand, (NumConstant, ast.Constant)):
+                        power = - (t.right.operand.value if sys.version_info >= (3, 8) else t.right.operand.n)
 
                 if power is not None and int(power) == power:
                     negative = power < 0
@@ -984,7 +1000,9 @@ def _Attribute(self, t):
         # Special case: 3.__abs__() is a syntax error, so if t.value
         # is an integer literal then we need to either parenthesize
         # it or add an extra space to get 3 .__abs__().
-        if (isinstance(t.value, (ast.Num, ast.Constant)) and isinstance(t.value.n, int)):
+        if isinstance(t.value, ast.Constant) and isinstance(t.value.value, int):
+            self.write(" ")
+        elif sys.version_info < (3, 8) and isinstance(t.value, ast.Num) and isinstance(t.value.n, int):
             self.write(" ")
         if (isinstance(t.value, ast.Name) and t.value.id in ('dace', 'dace::math', 'dace::cmath')):
             self.write("::")

dace/codegen/instrumentation/papi.py

@@ -448,7 +448,7 @@ class PAPIUtils(object):
     def available_counters() -> Dict[str, int]:
         """
         Returns the available PAPI counters on this machine. Only works on
-        \*nix based systems with ``grep`` and ``papi-tools`` installed.
+        *nix based systems with ``grep`` and ``papi-tools`` installed.
 
         :return: A set of available PAPI counters in the form of a dictionary
                  mapping from counter name to the number of native hardware

dace/codegen/targets/cpp.py

@@ -1,4 +1,4 @@
-# Copyright 2019-2021 ETH Zurich and the DaCe authors. All rights reserved.
+# Copyright 2019-2023 ETH Zurich and the DaCe authors. All rights reserved.
 """
 Helper functions for C++ code generation.
 NOTE: The C++ code generator is currently located in cpu.py.
@@ -9,6 +9,7 @@
 import itertools
 import math
 import numbers
+import sys
 import warnings
 
 import sympy as sp
@@ -1275,7 +1276,8 @@ def visit_BinOp(self, node: ast.BinOp):
                 evaluated_constant = symbolic.evaluate(unparsed, self.constants)
                 evaluated = symbolic.symstr(evaluated_constant, cpp_mode=True)
                 value = ast.parse(evaluated).body[0].value
-                if isinstance(evaluated_node, numbers.Number) and evaluated_node != value.n:
+                if isinstance(evaluated_node, numbers.Number) and evaluated_node != (
+                        value.value if sys.version_info >= (3, 8) else value.n):
                     raise TypeError
                 node.right = ast.parse(evaluated).body[0].value
             except (TypeError, AttributeError, NameError, KeyError, ValueError, SyntaxError):

dace/codegen/tools/type_inference.py

@@ -338,7 +338,15 @@ def _BinOp(t, symbols, inferred_symbols):
         return dtypes.result_type_of(type_left, type_right)
     # Special case for integer power
     elif t.op.__class__.__name__ == 'Pow':
-        if (isinstance(t.right, (ast.Num, ast.Constant)) and int(t.right.n) == t.right.n and t.right.n >= 0):
+        if (sys.version_info >= (3, 8) and isinstance(t.right, ast.Constant) and
+                int(t.right.value) == t.right.value and t.right.value >= 0):
+            if t.right.value != 0:
+                type_left = _dispatch(t.left, symbols, inferred_symbols)
+                for i in range(int(t.right.n) - 1):
+                    _dispatch(t.left, symbols, inferred_symbols)
+            return dtypes.result_type_of(type_left, dtypes.typeclass(np.uint32))
+        elif (sys.version_info < (3, 8) and isinstance(t.right, ast.Num) and
+                int(t.right.n) == t.right.n and t.right.n >= 0):
             if t.right.n != 0:
                 type_left = _dispatch(t.left, symbols, inferred_symbols)
                 for i in range(int(t.right.n) - 1):

dace/frontend/python/astutils.py

@@ -15,6 +15,12 @@
 from dace import dtypes, symbolic
 
 
+if sys.version_info >= (3, 8):
+    NumConstant = ast.Constant
+else:
+    NumConstant = ast.Num
+
+
 def _remove_outer_indentation(src: str):
     """ Removes extra indentation from a source Python function.
 
@@ -66,8 +72,9 @@ def is_constant(node: ast.AST) -> bool:
     if sys.version_info >= (3, 8):
         if isinstance(node, ast.Constant):
             return True
-    if isinstance(node, (ast.Num, ast.Str, ast.NameConstant)):  # For compatibility
-        return True
+    else:
+        if isinstance(node, (ast.Num, ast.Str, ast.NameConstant)):  # For compatibility
+            return True
     return False
 
 
@@ -82,13 +89,14 @@ def evalnode(node: ast.AST, gvars: Dict[str, Any]) -> Any:
     """
     if not isinstance(node, ast.AST):
         return node
-    if isinstance(node, ast.Index):  # For compatibility
+    if sys.version_info < (3, 9) and isinstance(node, ast.Index):  # For compatibility
         node = node.value
-    if isinstance(node, ast.Num):  # For compatibility
-        return node.n
     if sys.version_info >= (3, 8):
         if isinstance(node, ast.Constant):
             return node.value
+    else:
+        if isinstance(node, ast.Num):  # For compatibility
+            return node.n
 
     # Replace internal constants with their values
     node = copy_tree(node)
@@ -112,7 +120,7 @@ def rname(node):
 
     if isinstance(node, str):
         return node
-    if isinstance(node, ast.Num):
+    if sys.version_info < (3, 8) and isinstance(node, ast.Num):
         return str(node.n)
     if isinstance(node, ast.Name):  # form x
         return node.id
@@ -174,11 +182,11 @@ def subscript_to_ast_slice(node, without_array=False):
 
     # Python <3.9 compatibility
     result_slice = None
-    if isinstance(node.slice, ast.Index):
+    if sys.version_info < (3, 9) and isinstance(node.slice, ast.Index):
         slc = node.slice.value
         if not isinstance(slc, ast.Tuple):
             result_slice = [slc]
-    elif isinstance(node.slice, ast.ExtSlice):
+    elif sys.version_info < (3, 9) and isinstance(node.slice, ast.ExtSlice):
         slc = tuple(node.slice.dims)
     else:
         slc = node.slice
@@ -196,7 +204,7 @@ def subscript_to_ast_slice(node, without_array=False):
             # Slice
             if isinstance(s, ast.Slice):
                 result_slice.append((s.lower, s.upper, s.step))
-            elif isinstance(s, ast.Index):  # Index (Python <3.9)
+            elif sys.version_info < (3, 9) and isinstance(s, ast.Index):  # Index (Python <3.9)
                 result_slice.append(s.value)
             else:  # Index
                 result_slice.append(s)
@@ -226,7 +234,7 @@ def _Subscript(self, t):
         self.dispatch(t.value)
         self.write('[')
         # Compatibility
-        if isinstance(t.slice, ast.Index):
+        if sys.version_info < (3, 9) and isinstance(t.slice, ast.Index):
             slc = t.slice.value
         else:
             slc = t.slice
@@ -600,9 +608,9 @@ def visit_Name(self, node: ast.Name):
     def visit_Constant(self, node):
         return self.visit_Num(node)
 
-    def visit_Num(self, node: ast.Num):
+    def visit_Num(self, node: NumConstant):
         newname = f'__uu{self.id}'
-        self.gvars[newname] = node.n
+        self.gvars[newname] = node.value if sys.version_info >= (3, 8) else node.n
         self.id += 1
         return ast.copy_location(ast.Name(id=newname, ctx=ast.Load()), node)
 

dace/frontend/python/memlet_parser.py

@@ -1,7 +1,7 @@
-# Copyright 2019-2021 ETH Zurich and the DaCe authors. All rights reserved.
+# Copyright 2019-2023 ETH Zurich and the DaCe authors. All rights reserved.
 import ast
 import copy
-import re
+import sys
 from collections import namedtuple
 from typing import Any, Dict, List, Optional, Tuple, Union
 from dataclasses import dataclass
@@ -16,6 +16,22 @@
 MemletType = Union[ast.Call, ast.Attribute, ast.Subscript, ast.Name]
 
 
+if sys.version_info < (3, 8):
+    _simple_ast_nodes = (ast.Constant, ast.Name, ast.NameConstant, ast.Num)
+    BytesConstant = ast.Bytes
+    EllipsisConstant = ast.Ellipsis
+    NameConstant = ast.NameConstant
+    NumConstant = ast.Num
+    StrConstant = ast.Str
+else:
+    _simple_ast_nodes = (ast.Constant, ast.Name)
+    BytesConstant = ast.Constant
+    EllipsisConstant = ast.Constant
+    NameConstant = ast.Constant
+    NumConstant = ast.Constant
+    StrConstant = ast.Constant
+
+
 @dataclass
 class MemletExpr:
     name: str
@@ -114,7 +130,7 @@ def _fill_missing_slices(das, ast_ndslice, array, indices):
             offsets.append(idx)
             idx += 1
             new_idx += 1
-        elif (isinstance(dim, ast.Ellipsis) or dim is Ellipsis
+        elif ((sys.version_info < (3, 8) and isinstance(dim, ast.Ellipsis)) or dim is Ellipsis
               or (isinstance(dim, ast.Constant) and dim.value is Ellipsis)
               or (isinstance(dim, ast.Name) and dim.id is Ellipsis)):
             if has_ellipsis:
@@ -125,7 +141,7 @@ def _fill_missing_slices(das, ast_ndslice, array, indices):
                 ndslice[j] = (0, array.shape[j] - 1, 1)
                 idx += 1
                 new_idx += 1
-        elif (dim is None or (isinstance(dim, (ast.Constant, ast.NameConstant)) and dim.value is None)):
+        elif (dim is None or (isinstance(dim, (ast.Constant, NameConstant)) and dim.value is None)):
             new_axes.append(new_idx)
             new_idx += 1
             # NOTE: Do not increment idx here