Add copy button

Author: dukecat0

requirements.txt

@@ -2,4 +2,5 @@ sphinx==4.0.3
 sphinx-autobuild==0.7.1
 sphinx-inline-tabs==2021.4.11b9
 python-docs-theme==2021.5
+sphinx-copybutton==0.4.0
 git+https://github.com/pypa/pypa-docs-theme.git#egg=pypa-docs-theme

source/conf.py

@@ -35,8 +35,13 @@
     'sphinx.ext.intersphinx',
     'sphinx.ext.todo',
     'sphinx_inline_tabs',
+    'sphinx_copybutton',
 ]
 
+# config for copy button
+copybutton_prompt_text = r">>> |\.\.\. "
+copybutton_prompt_is_regexp = True
+
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']