The module uses the old raise syntax raise ErrorClass, args. Use the new raise syntax raise ErrorClass(args) to improve readability and ensure compatibility with Python versions 3 and above (which require the new syntax).

One of Python's guiding maxims is "there should be one obvious way to do it." Providing multiple, functionally-equivalent ways to raise exceptions violates this maxim.

The module below triggers the use new raise syntax error because of the statement raise Exception, "1 != 0". This syntax is deprecated in Python 3.

try:
    if 1 != 0:
        raise Exception, "1 != 0"  # old raise syntax
except Exception as e:
    print e

The updated module has replaced the old style raise statement raise Exception, "1 != 0" with the new style raise Exception("1 != 0").

try:
    if 1 != 0:
        raise Exception("1 != 0")  # new raise syntax
except Exception as e:
    print e

• PEP 3109 - Raising Exceptions in Python 3
• PyLint - W0121