Uploaded Test files

venv/Lib/site-packages/IPython/core/crashhandler.py

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+# encoding: utf-8
+"""sys.excepthook for IPython itself, leaves a detailed report on disk.
+
+Authors:
+
+* Fernando Perez
+* Brian E. Granger
+"""
+
+#-----------------------------------------------------------------------------
+#  Copyright (C) 2001-2007 Fernando Perez. <fperez@colorado.edu>
+#  Copyright (C) 2008-2011  The IPython Development Team
+#
+#  Distributed under the terms of the BSD License.  The full license is in
+#  the file COPYING, distributed as part of this software.
+#-----------------------------------------------------------------------------
+
+#-----------------------------------------------------------------------------
+# Imports
+#-----------------------------------------------------------------------------
+
+import os
+import sys
+import traceback
+from pprint import pformat
+
+from IPython.core import ultratb
+from IPython.core.release import author_email
+from IPython.utils.sysinfo import sys_info
+from IPython.utils.py3compat import input
+
+from IPython.core.release import __version__ as version
+
+#-----------------------------------------------------------------------------
+# Code
+#-----------------------------------------------------------------------------
+
+# Template for the user message.
+_default_message_template = """\
+Oops, {app_name} crashed. We do our best to make it stable, but...
+
+A crash report was automatically generated with the following information:
+  - A verbatim copy of the crash traceback.
+  - A copy of your input history during this session.
+  - Data on your current {app_name} configuration.
+
+It was left in the file named:
+\t'{crash_report_fname}'
+If you can email this file to the developers, the information in it will help
+them in understanding and correcting the problem.
+
+You can mail it to: {contact_name} at {contact_email}
+with the subject '{app_name} Crash Report'.
+
+If you want to do it now, the following command will work (under Unix):
+mail -s '{app_name} Crash Report' {contact_email} < {crash_report_fname}
+
+In your email, please also include information about:
+- The operating system under which the crash happened: Linux, macOS, Windows,
+  other, and which exact version (for example: Ubuntu 16.04.3, macOS 10.13.2,
+  Windows 10 Pro), and whether it is 32-bit or 64-bit;
+- How {app_name} was installed: using pip or conda, from GitHub, as part of
+  a Docker container, or other, providing more detail if possible;
+- How to reproduce the crash: what exact sequence of instructions can one
+  input to get the same crash? Ideally, find a minimal yet complete sequence
+  of instructions that yields the crash.
+
+To ensure accurate tracking of this issue, please file a report about it at:
+{bug_tracker}
+"""
+
+_lite_message_template = """
+If you suspect this is an IPython {version} bug, please report it at:
+    https://github.com/ipython/ipython/issues
+or send an email to the mailing list at {email}
+
+You can print a more detailed traceback right now with "%tb", or use "%debug"
+to interactively debug it.
+
+Extra-detailed tracebacks for bug-reporting purposes can be enabled via:
+    {config}Application.verbose_crash=True
+"""
+
+
+class CrashHandler(object):
+    """Customizable crash handlers for IPython applications.
+
+    Instances of this class provide a :meth:`__call__` method which can be
+    used as a ``sys.excepthook``.  The :meth:`__call__` signature is::
+
+        def __call__(self, etype, evalue, etb)
+    """
+
+    message_template = _default_message_template
+    section_sep = '\n\n'+'*'*75+'\n\n'
+
+    def __init__(self, app, contact_name=None, contact_email=None,
+                 bug_tracker=None, show_crash_traceback=True, call_pdb=False):
+        """Create a new crash handler
+
+        Parameters
+        ----------
+        app :  Application
+            A running :class:`Application` instance, which will be queried at
+            crash time for internal information.
+
+        contact_name : str
+            A string with the name of the person to contact.
+
+        contact_email : str
+            A string with the email address of the contact.
+
+        bug_tracker : str
+            A string with the URL for your project's bug tracker.
+
+        show_crash_traceback : bool
+            If false, don't print the crash traceback on stderr, only generate
+            the on-disk report
+
+        Non-argument instance attributes:
+
+        These instances contain some non-argument attributes which allow for
+        further customization of the crash handler's behavior. Please see the
+        source for further details.
+        """
+        self.crash_report_fname = "Crash_report_%s.txt" % app.name
+        self.app = app
+        self.call_pdb = call_pdb
+        #self.call_pdb = True # dbg
+        self.show_crash_traceback = show_crash_traceback
+        self.info = dict(app_name = app.name,
+                    contact_name = contact_name,
+                    contact_email = contact_email,
+                    bug_tracker = bug_tracker,
+                    crash_report_fname = self.crash_report_fname)
+
+
+    def __call__(self, etype, evalue, etb):
+        """Handle an exception, call for compatible with sys.excepthook"""
+        
+        # do not allow the crash handler to be called twice without reinstalling it
+        # this prevents unlikely errors in the crash handling from entering an
+        # infinite loop.
+        sys.excepthook = sys.__excepthook__
+        
+        # Report tracebacks shouldn't use color in general (safer for users)
+        color_scheme = 'NoColor'
+
+        # Use this ONLY for developer debugging (keep commented out for release)
+        #color_scheme = 'Linux'   # dbg
+        try:
+            rptdir = self.app.ipython_dir
+        except:
+            rptdir = os.getcwd()
+        if rptdir is None or not os.path.isdir(rptdir):
+            rptdir = os.getcwd()
+        report_name = os.path.join(rptdir,self.crash_report_fname)
+        # write the report filename into the instance dict so it can get
+        # properly expanded out in the user message template
+        self.crash_report_fname = report_name
+        self.info['crash_report_fname'] = report_name
+        TBhandler = ultratb.VerboseTB(
+            color_scheme=color_scheme,
+            long_header=1,
+            call_pdb=self.call_pdb,
+        )
+        if self.call_pdb:
+            TBhandler(etype,evalue,etb)
+            return
+        else:
+            traceback = TBhandler.text(etype,evalue,etb,context=31)
+
+        # print traceback to screen
+        if self.show_crash_traceback:
+            print(traceback, file=sys.stderr)
+
+        # and generate a complete report on disk
+        try:
+            report = open(report_name,'w')
+        except:
+            print('Could not create crash report on disk.', file=sys.stderr)
+            return
+
+        with report:
+            # Inform user on stderr of what happened
+            print('\n'+'*'*70+'\n', file=sys.stderr)
+            print(self.message_template.format(**self.info), file=sys.stderr)
+
+            # Construct report on disk
+            report.write(self.make_report(traceback))
+
+        input("Hit <Enter> to quit (your terminal may close):")
+
+    def make_report(self,traceback):
+        """Return a string containing a crash report."""
+
+        sec_sep = self.section_sep
+
+        report = ['*'*75+'\n\n'+'IPython post-mortem report\n\n']
+        rpt_add = report.append
+        rpt_add(sys_info())
+
+        try:
+            config = pformat(self.app.config)
+            rpt_add(sec_sep)
+            rpt_add('Application name: %s\n\n' % self.app_name)
+            rpt_add('Current user configuration structure:\n\n')
+            rpt_add(config)
+        except:
+            pass
+        rpt_add(sec_sep+'Crash traceback:\n\n' + traceback)
+
+        return ''.join(report)
+
+
+def crash_handler_lite(etype, evalue, tb):
+    """a light excepthook, adding a small message to the usual traceback"""
+    traceback.print_exception(etype, evalue, tb)
+    
+    from IPython.core.interactiveshell import InteractiveShell
+    if InteractiveShell.initialized():
+        # we are in a Shell environment, give %magic example
+        config = "%config "
+    else:
+        # we are not in a shell, show generic config
+        config = "c."
+    print(_lite_message_template.format(email=author_email, config=config, version=version), file=sys.stderr)
+