sudo software-properties-gtk

Traceback (most recent call last):
  File "/usr/bin/software-properties-gtk", line 37, in <module>
    from softwareproperties.gtk.SoftwarePropertiesGtk import SoftwarePropertiesGtk
  File "/usr/lib/python3/dist-packages/softwareproperties/gtk/SoftwarePropertiesGtk.py", line 27, in <module>
    import apt
  File "/usr/lib/python3/dist-packages/apt/__init__.py", line 26, in <module>
    from apt.package import Package
  File "/usr/lib/python3/dist-packages/apt/package.py", line 32, in <module>
    from http.client import BadStatusLine
  File "/usr/lib/python3.4/http/client.py", line 69, in <module>
    import email.parser
  File "/usr/lib/python3.4/email/parser.py", line 12, in <module>
    from email.feedparser import FeedParser, BytesFeedParser
  File "/usr/lib/python3.4/email/feedparser.py", line 27, in <module>
    from email import message
  File "/usr/lib/python3.4/email/message.py", line 16, in <module>
    from email import utils
  File "/usr/lib/python3.4/email/utils.py", line 31, in <module>
    import urllib.parse
  File "<frozen importlib._bootstrap>", line 2237, in _find_and_load
  File "<frozen importlib._bootstrap>", line 2226, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 1200, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 1129, in _exec
  File "<frozen importlib._bootstrap>", line 1467, in exec_module
  File "<frozen importlib._bootstrap>", line 1570, in get_code
  File "<frozen importlib._bootstrap>", line 656, in _compile_bytecode
EOFError: marshal data too short
Error in sys.excepthook:
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 63, in apport_excepthook
    from apport.fileutils import likely_packaged, get_recent_crashes
  File "/usr/lib/python3/dist-packages/apport/__init__.py", line 5, in <module>
    from apport.report import Report
  File "/usr/lib/python3/dist-packages/apport/report.py", line 21, in <module>
    from urllib.request import urlopen
  File "/usr/lib/python3.4/urllib/request.py", line 88, in <module>
    import http.client
  File "/usr/lib/python3.4/http/client.py", line 69, in <module>
    import email.parser
  File "/usr/lib/python3.4/email/parser.py", line 12, in <module>
    from email.feedparser import FeedParser, BytesFeedParser
  File "/usr/lib/python3.4/email/feedparser.py", line 27, in <module>
    from email import message
  File "/usr/lib/python3.4/email/message.py", line 16, in <module>
    from email import utils
  File "/usr/lib/python3.4/email/utils.py", line 31, in <module>
    import urllib.parse
  File "<frozen importlib._bootstrap>", line 2237, in _find_and_load
  File "<frozen importlib._bootstrap>", line 2226, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 1200, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 1129, in _exec
  File "<frozen importlib._bootstrap>", line 1467, in exec_module
  File "<frozen importlib._bootstrap>", line 1570, in get_code
  File "<frozen importlib._bootstrap>", line 656, in _compile_bytecode
EOFError: marshal data too short

Original exception was:
Traceback (most recent call last):
  File "/usr/bin/software-properties-gtk", line 37, in <module>
    from softwareproperties.gtk.SoftwarePropertiesGtk import SoftwarePropertiesGtk
  File "/usr/lib/python3/dist-packages/softwareproperties/gtk/SoftwarePropertiesGtk.py", line 27, in <module>
    import apt
  File "/usr/lib/python3/dist-packages/apt/__init__.py", line 26, in <module>
    from apt.package import Package
  File "/usr/lib/python3/dist-packages/apt/package.py", line 32, in <module>
    from http.client import BadStatusLine
  File "/usr/lib/python3.4/http/client.py", line 69, in <module>
    import email.parser
  File "/usr/lib/python3.4/email/parser.py", line 12, in <module>
    from email.feedparser import FeedParser, BytesFeedParser
  File "/usr/lib/python3.4/email/feedparser.py", line 27, in <module>
    from email import message
  File "/usr/lib/python3.4/email/message.py", line 16, in <module>
    from email import utils
  File "/usr/lib/python3.4/email/utils.py", line 31, in <module>
    import urllib.parse
  File "<frozen importlib._bootstrap>", line 2237, in _find_and_load
  File "<frozen importlib._bootstrap>", line 2226, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 1200, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 1129, in _exec
  File "<frozen importlib._bootstrap>", line 1467, in exec_module
  File "<frozen importlib._bootstrap>", line 1570, in get_code
  File "<frozen importlib._bootstrap>", line 656, in _compile_bytecode
EOFError: marshal data too short