Merge pull request #687 from Mathics3/add-PythonImplementation

Add $PythonImplementation...

Author: rocky

CHANGES.rst

@@ -12,6 +12,7 @@ New Builtins
 #. ``$BoxForms``
 #. ``$OutputForms``
 #. ``$PrintForms``
+#. ``$PythonImplementation``
 #. ``Accuracy``
 #. ``ClebschGordan``
 #. ``Curl`` (2-D and 3-D vector forms only)

SYMBOLS_MANIFEST.txt

@@ -56,6 +56,7 @@ System`$PreRead
 System`$PrintForms
 System`$ProcessID
 System`$ProcessorType
+System`$PythonImplementation
 System`$RandomState
 System`$RecursionLimit
 System`$RootDirectory

mathics/builtin/system.py

@@ -75,7 +75,7 @@ class Environment(Builtin):
 
     summary_text = "list the system environment variables"
 
-    def apply(self, var, evaluation):
+    def eval(self, var, evaluation):
         "Environment[var_String]"
         env_var = var.get_string_value()
         if env_var not in os.environ:
@@ -116,7 +116,7 @@ class GetEnvironment(Builtin):
 
     summary_text = "retrieve the value of a system environment variable"
 
-    def apply(self, var, evaluation):
+    def eval(self, var, evaluation):
         "GetEnvironment[var___]"
         if isinstance(var, String):
             env_var = var.get_string_value()
@@ -262,24 +262,49 @@ def evaluate(self, evaluation) -> Integer:
 
 class ProcessorType(Predefined):
     r"""
-    <url>:WMA link:https://reference.wolfram.com/language/ref/ProcessorType.html</url>
+    <url>
+    :WMA link:
+    https://reference.wolfram.com/language/ref/ProcessorType.html</url>
 
     <dl>
-    <dt>'$ProcessorType'
-        <dd>gives a string giving the architecture of the processor on which the \Mathics is being run.
+      <dt>'$ProcessorType'
+      <dd>gives a string giving the architecture of the processor on which the \Mathics is being run.
     </dl>
-    X> $ProcessorType
-    = x86_64
+
+    >> $ProcessorType
+    = ...
     """
+    name = "$ProcessorType"
+
     summary_text = (
         "name of the architecture of the processor over which Mathics is running"
     )
-    name = "$ProcessorType"
 
     def evaluate(self, evaluation):
         return String(platform.machine())
 
 
+class PythonImplementation(Predefined):
+    r"""
+    ## <url>:PythonImplementation native symbol:</url>
+
+    <dl>
+    <dt>'$PythonImplementation'
+        <dd>gives a string indication the Python implementation used to run \Mathics.
+    </dl>
+    >> $PythonImplementation
+    = ...
+    """
+    name = "$PythonImplementation"
+
+    summary_text = "name of the Python implementation running Mathics"
+
+    def evaluate(self, evaluation):
+        from mathics.system_info import python_implementation
+
+        return String(python_implementation())
+
+
 class ScriptCommandLine(Predefined):
     """
     <url>:WMA link:https://reference.wolfram.com/language/ref/ScriptCommandLine.html</url>
@@ -320,7 +345,7 @@ class Run(Builtin):
 
     summary_text = "run a system command"
 
-    def apply(self, command, evaluation):
+    def eval(self, command, evaluation):
         "Run[command_String]"
         command_str = command.to_python()
         return Integer(subprocess.call(command_str, shell=True))
@@ -480,7 +505,7 @@ class MemoryAvailable(Builtin):
 
         summary_text = "the available amount of physical memory in the system"
 
-        def apply(self, evaluation) -> Integer:
+        def eval(self, evaluation) -> Integer:
             """MemoryAvailable[]"""
             totalmem = psutil.virtual_memory().available
             return Integer(totalmem)
@@ -523,7 +548,7 @@ class MemoryAvailable(Builtin):
 
         summary_text = "the available amount of physical memory in the system"
 
-        def apply(self, evaluation) -> Integer:
+        def eval(self, evaluation) -> Integer:
             """MemoryAvailable[]"""
             return Integer(-1)
 
@@ -543,7 +568,7 @@ class MemoryInUse(Builtin):
 
     summary_text = "number of bytes of memory currently being used by Mathics"
 
-    def apply_0(self, evaluation) -> Integer:
+    def eval_0(self, evaluation) -> Integer:
         """MemoryInUse[]"""
         # Partially borrowed from https://code.activestate.com/recipes/577504/
         from itertools import chain
@@ -596,7 +621,7 @@ class Share(Builtin):
 
     summary_text = "force Python garbage collection"
 
-    def apply(self, evaluation) -> Integer:
+    def eval(self, evaluation) -> Integer:
         """Share[]"""
         # TODO: implement a routine that swap all the definitions,
         # collecting repeated symbols and expressions, and then
@@ -610,7 +635,7 @@ def apply(self, evaluation) -> Integer:
             gc.collect()
             return Integer0
 
-    def apply_with_symbol(self, symbol, evaluation) -> Integer:
+    def eval_with_symbol(self, symbol, evaluation) -> Integer:
         """Share[symbol_Symbol]"""
         # TODO: implement a routine that swap all the definitions,
         # collecting repeated symbols and expressions, and then

mathics/system_info.py

@@ -11,6 +11,22 @@
 from mathics.core.evaluation import Evaluation
 
 
+def python_implementation() -> str:
+    """
+    Returns the Python implemnetation, e.g Pyston, PyPy, CPython...
+    """
+    if hasattr(sys, "pyston_version_info"):
+        custom_version_info = sys.pyston_version_info
+        python_implementation = "Pyston"
+    elif hasattr(sys, "pypy_version_info"):
+        custom_version_info = sys.pypy_version_info
+        python_implementation = "PyPy"
+    else:
+        custom_version_info = sys.version_info
+        python_implementation = platform.python_implementation()
+    return f"{python_implementation} {'.'.join((str(i) for i in custom_version_info))}"
+
+
 def mathics_system_info(defs):
     def eval(name, needs_head=True):
         evaled = name().evaluate(evaluation)
@@ -28,6 +44,7 @@ def eval(name, needs_head=True):
         "$MachineName": platform.uname().node,
         "$ProcessID": os.getppid(),
         "$ProcessorType": platform.machine(),
+        "$PythonImplementation": python_implementation(),
         "$RootDirectory": eval(filesystem.RootDirectory),
         "$SystemID": sys.platform,
         "$SystemMemory": eval(msystem.SystemMemory),

test/test_system_info.py

@@ -20,6 +20,7 @@ def test_system_info():
             "$MachineName",
             "$ProcessID",
             "$ProcessorType",
+            "$PythonImplementation",
             "$RootDirectory",
             "$SystemID",
             "$SystemMemory",