Merge pull request #2721 from plotly/remove-ansi2html

T4rk1n · web-flow · commit 000ec180be04 · 2024-01-09T12:54:08.000-05:00
Remove ansi2html.
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -9,6 +9,7 @@ This project adheres to [Semantic Versioning](https://semver.org/).
 
 ## Changed
 - [#2652](https://github.com/plotly/dash/pull/2652) dcc.Clipboard supports htm_content and triggers a copy to clipboard when n_clicks are changed
+- [#2721](https://github.com/plotly/dash/pull/2721) Remove ansi2html, fixes [#2613](https://github.com/plotly/dash/issues/2713)
 
 ## [2.14.2] - 2023-11-27
 
diff --git a/dash/_jupyter.py b/dash/_jupyter.py
@@ -5,7 +5,6 @@
 import os
 import queue
 import uuid
-import re
 import sys
 import threading
 import time
@@ -22,7 +21,6 @@
     from IPython.core.display import HTML
     from IPython.core.ultratb import FormattedTB
     from retrying import retry
-    from ansi2html import Ansi2HTMLConverter
     from ipykernel.comm import Comm
     import nest_asyncio
 
@@ -450,13 +448,12 @@ def _wrap_errors(error):
             original_formatargvalues = inspect.formatargvalues
             inspect.formatargvalues = _custom_formatargvalues
             try:
-                # Use IPython traceback formatting to build colored ANSI traceback
-                # string
+                # Use IPython traceback formatting to build the traceback string.
                 ostream = io.StringIO()
                 ipytb = FormattedTB(
                     tb_offset=skip,
                     mode="Verbose",
-                    color_scheme="Linux",
+                    color_scheme="NoColor",
                     include_vars=True,
                     ostream=ostream,
                 )
@@ -465,27 +462,12 @@ def _wrap_errors(error):
                 # Restore formatargvalues
                 inspect.formatargvalues = original_formatargvalues
 
-            # Print colored ANSI representation if requested
-            ansi_stacktrace = ostream.getvalue()
+            stacktrace = ostream.getvalue()
 
             if self.inline_exceptions:
-                print(ansi_stacktrace)
+                print(stacktrace)
 
-            # Use ansi2html to convert the colored ANSI string to HTML
-            conv = Ansi2HTMLConverter(scheme="ansi2html", dark_bg=False)
-            html_str = conv.convert(ansi_stacktrace)
-
-            # Set width to fit 75-character wide stack trace and font to a size the
-            # won't require a horizontal scroll bar
-            html_str = html_str.replace(
-                "<html>", '<html style="width: 75ch; font-size: 0.86em">'
-            )
-
-            # Remove explicit background color so Dash dev-tools can set background
-            # color
-            html_str = re.sub("background-color:[^;]+;", "", html_str)
-
-            return html_str, 500
+            return stacktrace, 500
 
     @property
     def active(self):
diff --git a/requires-ci.txt b/requires-ci.txt
@@ -7,7 +7,7 @@ flake8==3.9.2
 flaky==3.7.0
 flask-talisman==1.0.0
 isort==4.3.21;python_version<"3.7"
-mimesis
+mimesis<=11.1.0
 mock==4.0.3
 numpy<=1.25.2
 orjson==3.5.4;python_version<"3.7"
diff --git a/requires-install.txt b/requires-install.txt
@@ -10,6 +10,5 @@ contextvars==2.4;python_version<"3.7"
 typing_extensions>=4.1.1
 requests
 retrying
-ansi2html
 nest-asyncio
 setuptools
