src/sage/misc/package.py: Make 'prompt-toolkit' doctest pass with all tool versions

Author: Matthias Koeppe

src/sage/misc/package.py

@@ -181,10 +181,10 @@ def pip_installed_packages(normalization=None):
         sage: d = pip_installed_packages()
         sage: 'scipy' in d or 'SciPy' in d
         True
-        sage: d['beautifulsoup4']                               # optional - beautifulsoup4
-        '...'
-        sage: d['prompt-toolkit']
-        '...'
+        sage: sorted(d)                                         # needs beautifulsoup4
+        [...'beautifulsoup4'...]
+        sage: sorted(d)  # whether - or _ appears in the name depends on tool versions
+        [...'prompt...toolkit'...]
         sage: d = pip_installed_packages(normalization='spkg')
         sage: d['prompt_toolkit']
         '...'