mesos-style reports violations on a clean checkout

Checking 46 Python files
Using config file /home/bbannier/src/mesos/support/pylint.config
************* Module cli.plugins.base
E:119, 0: Bad option value 'R0204' (bad-option-value)
************* Module settings
E: 32, 4: No name 'VERSION' in module 'version' (no-name-in-module)
Using config file /home/bbannier/src/mesos/support/pylint.config
************* Module mesos.http
E: 25, 0: Unable to import 'urlparse' (import-error)
E: 87,30: Undefined variable 'xrange' (undefined-variable)
Using config file /home/bbannier/src/mesos/support/pylint.config
************* Module apply-reviews
R: 99, 0: Either all return statements in a function should return an expression, or none of them should. (inconsistent-return-statements)
C:124, 9: Do not use `len(SEQUENCE)` to determine if a sequence is empty (len-as-condition)
R:302, 4: Unnecessary "else" after "return" (no-else-return)
************* Module generate-endpoint-help
R:215, 4: Unnecessary "else" after "return" (no-else-return)
************* Module verify-reviews
C:261, 7: Do not use `len(SEQUENCE)` to determine if a sequence is empty (len-as-condition)
Total errors found: 9