Uploaded Test files

venv/Lib/site-packages/ipykernel/inprocess/blocking.py

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+""" Implements a fully blocking kernel client.
+
+Useful for test suites and blocking terminal interfaces.
+"""
+#-----------------------------------------------------------------------------
+#  Copyright (C) 2012  The IPython Development Team
+#
+#  Distributed under the terms of the BSD License.  The full license is in
+#  the file COPYING.txt, distributed as part of this software.
+#-----------------------------------------------------------------------------
+import sys
+try:
+    from queue import Queue, Empty  # Py 3
+except ImportError:
+    from Queue import Queue, Empty  # Py 2
+
+# IPython imports
+from traitlets import Type
+
+# Local imports
+from .channels import (
+    InProcessChannel,
+)
+from .client import InProcessKernelClient
+
+class BlockingInProcessChannel(InProcessChannel):
+
+    def __init__(self, *args, **kwds):
+        super(BlockingInProcessChannel, self).__init__(*args, **kwds)
+        self._in_queue = Queue()
+
+    def call_handlers(self, msg):
+        self._in_queue.put(msg)
+
+    def get_msg(self, block=True, timeout=None):
+        """ Gets a message if there is one that is ready. """
+        if timeout is None:
+            # Queue.get(timeout=None) has stupid uninteruptible
+            # behavior, so wait for a week instead
+            timeout = 604800
+        return self._in_queue.get(block, timeout)
+
+    def get_msgs(self):
+        """ Get all messages that are currently ready. """
+        msgs = []
+        while True:
+            try:
+                msgs.append(self.get_msg(block=False))
+            except Empty:
+                break
+        return msgs
+
+    def msg_ready(self):
+        """ Is there a message that has been received? """
+        return not self._in_queue.empty()
+
+
+class BlockingInProcessStdInChannel(BlockingInProcessChannel):
+    def call_handlers(self, msg):
+        """ Overridden for the in-process channel.
+
+        This methods simply calls raw_input directly.
+        """
+        msg_type = msg['header']['msg_type']
+        if msg_type == 'input_request':
+            _raw_input = self.client.kernel._sys_raw_input
+            prompt = msg['content']['prompt']
+            print(prompt, end='', file=sys.__stdout__)
+            sys.__stdout__.flush()
+            self.client.input(_raw_input())
+
+class BlockingInProcessKernelClient(InProcessKernelClient):
+
+    # The classes to use for the various channels.
+    shell_channel_class = Type(BlockingInProcessChannel)
+    iopub_channel_class = Type(BlockingInProcessChannel)
+    stdin_channel_class = Type(BlockingInProcessStdInChannel)
+
+    def wait_for_ready(self):
+        # Wait for kernel info reply on shell channel
+        while True:
+            msg = self.shell_channel.get_msg(block=True)
+            if msg['msg_type'] == 'kernel_info_reply':
+                self._handle_kernel_info_reply(msg)
+                break
+
+        # Flush IOPub channel
+        while True:
+            try:
+                msg = self.iopub_channel.get_msg(block=True, timeout=0.2)
+                print(msg['msg_type'])
+            except Empty:
+                break